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[134.134.139.74]) by smtp.gmail.com with ESMTPSA id gf21sm9783296pjb.20.2021.05.03.08.57.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 May 2021 08:57:55 -0700 (PDT) From: Jason Ekstrand To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH 01/27] drm/i915: Drop I915_CONTEXT_PARAM_RINGSIZE Date: Mon, 3 May 2021 10:57:22 -0500 Message-Id: <20210503155748.1961781-2-jason@jlekstrand.net> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210503155748.1961781-1-jason@jlekstrand.net> References: <20210503155748.1961781-1-jason@jlekstrand.net> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Daniel Vetter , Jason Ekstrand Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" This reverts commit 88be76cdafc7 ("drm/i915: Allow userspace to specify ringsize on construction"). This API was originally added for OpenCL but the compute-runtime PR has sat open for a year without action so we can still pull it out if we want. I argue we should drop it for three reasons: 1. If the compute-runtime PR has sat open for a year, this clearly isn't that important. 2. It's a very leaky API. Ring size is an implementation detail of the current execlist scheduler and really only makes sense there. It can't apply to the older ring-buffer scheduler on pre-execlist hardware because that's shared across all contexts and it won't apply to the GuC scheduler that's in the pipeline. 3. Having userspace set a ring size in bytes is a bad solution to the problem of having too small a ring. There is no way that userspace has the information to know how to properly set the ring size so it's just going to detect the feature and always set it to the maximum of 512K. This is what the compute-runtime PR does. The scheduler in i915, on the other hand, does have the information to make an informed choice. It could detect if the ring size is a problem and grow it itself. Or, if that's too hard, we could just increase the default size from 16K to 32K or even 64K instead of relying on userspace to do it. Let's drop this API for now and, if someone decides they really care about solving this problem, they can do it properly. Signed-off-by: Jason Ekstrand Reviewed-by: Daniel Vetter --- drivers/gpu/drm/i915/Makefile | 1 - drivers/gpu/drm/i915/gem/i915_gem_context.c | 85 +------------------ drivers/gpu/drm/i915/gt/intel_context_param.c | 63 -------------- drivers/gpu/drm/i915/gt/intel_context_param.h | 3 - include/uapi/drm/i915_drm.h | 20 +---- 5 files changed, 4 insertions(+), 168 deletions(-) delete mode 100644 drivers/gpu/drm/i915/gt/intel_context_param.c diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile index d0d936d9137bc..afa22338fa343 100644 --- a/drivers/gpu/drm/i915/Makefile +++ b/drivers/gpu/drm/i915/Makefile @@ -88,7 +88,6 @@ gt-y += \ gt/gen8_ppgtt.o \ gt/intel_breadcrumbs.o \ gt/intel_context.o \ - gt/intel_context_param.o \ gt/intel_context_sseu.o \ gt/intel_engine_cs.o \ gt/intel_engine_heartbeat.o \ diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c index fd8ee52e17a47..e52b85b8f923d 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c @@ -1335,63 +1335,6 @@ static int set_ppgtt(struct drm_i915_file_private *file_priv, return err; } -static int __apply_ringsize(struct intel_context *ce, void *sz) -{ - return intel_context_set_ring_size(ce, (unsigned long)sz); -} - -static int set_ringsize(struct i915_gem_context *ctx, - struct drm_i915_gem_context_param *args) -{ - if (!HAS_LOGICAL_RING_CONTEXTS(ctx->i915)) - return -ENODEV; - - if (args->size) - return -EINVAL; - - if (!IS_ALIGNED(args->value, I915_GTT_PAGE_SIZE)) - return -EINVAL; - - if (args->value < I915_GTT_PAGE_SIZE) - return -EINVAL; - - if (args->value > 128 * I915_GTT_PAGE_SIZE) - return -EINVAL; - - return context_apply_all(ctx, - __apply_ringsize, - __intel_context_ring_size(args->value)); -} - -static int __get_ringsize(struct intel_context *ce, void *arg) -{ - long sz; - - sz = intel_context_get_ring_size(ce); - GEM_BUG_ON(sz > INT_MAX); - - return sz; /* stop on first engine */ -} - -static int get_ringsize(struct i915_gem_context *ctx, - struct drm_i915_gem_context_param *args) -{ - int sz; - - if (!HAS_LOGICAL_RING_CONTEXTS(ctx->i915)) - return -ENODEV; - - if (args->size) - return -EINVAL; - - sz = context_apply_all(ctx, __get_ringsize, NULL); - if (sz < 0) - return sz; - - args->value = sz; - return 0; -} - int i915_gem_user_to_context_sseu(struct intel_gt *gt, const struct drm_i915_gem_context_param_sseu *user, @@ -2037,11 +1980,8 @@ static int ctx_setparam(struct drm_i915_file_private *fpriv, ret = set_persistence(ctx, args); break; - case I915_CONTEXT_PARAM_RINGSIZE: - ret = set_ringsize(ctx, args); - break; - case I915_CONTEXT_PARAM_BAN_PERIOD: + case I915_CONTEXT_PARAM_RINGSIZE: default: ret = -EINVAL; break; @@ -2069,18 +2009,6 @@ static int create_setparam(struct i915_user_extension __user *ext, void *data) return ctx_setparam(arg->fpriv, arg->ctx, &local.param); } -static int copy_ring_size(struct intel_context *dst, - struct intel_context *src) -{ - long sz; - - sz = intel_context_get_ring_size(src); - if (sz < 0) - return sz; - - return intel_context_set_ring_size(dst, sz); -} - static int clone_engines(struct i915_gem_context *dst, struct i915_gem_context *src) { @@ -2125,12 +2053,6 @@ static int clone_engines(struct i915_gem_context *dst, } intel_context_set_gem(clone->engines[n], dst); - - /* Copy across the preferred ringsize */ - if (copy_ring_size(clone->engines[n], e->engines[n])) { - __free_engines(clone, n + 1); - goto err_unlock; - } } clone->num_engines = n; i915_sw_fence_complete(&e->fence); @@ -2490,11 +2412,8 @@ int i915_gem_context_getparam_ioctl(struct drm_device *dev, void *data, args->value = i915_gem_context_is_persistent(ctx); break; - case I915_CONTEXT_PARAM_RINGSIZE: - ret = get_ringsize(ctx, args); - break; - case I915_CONTEXT_PARAM_BAN_PERIOD: + case I915_CONTEXT_PARAM_RINGSIZE: default: ret = -EINVAL; break; diff --git a/drivers/gpu/drm/i915/gt/intel_context_param.c b/drivers/gpu/drm/i915/gt/intel_context_param.c deleted file mode 100644 index 65dcd090245d6..0000000000000 --- a/drivers/gpu/drm/i915/gt/intel_context_param.c +++ /dev/null @@ -1,63 +0,0 @@ -// SPDX-License-Identifier: MIT -/* - * Copyright © 2019 Intel Corporation - */ - -#include "i915_active.h" -#include "intel_context.h" -#include "intel_context_param.h" -#include "intel_ring.h" - -int intel_context_set_ring_size(struct intel_context *ce, long sz) -{ - int err; - - if (intel_context_lock_pinned(ce)) - return -EINTR; - - err = i915_active_wait(&ce->active); - if (err < 0) - goto unlock; - - if (intel_context_is_pinned(ce)) { - err = -EBUSY; /* In active use, come back later! */ - goto unlock; - } - - if (test_bit(CONTEXT_ALLOC_BIT, &ce->flags)) { - struct intel_ring *ring; - - /* Replace the existing ringbuffer */ - ring = intel_engine_create_ring(ce->engine, sz); - if (IS_ERR(ring)) { - err = PTR_ERR(ring); - goto unlock; - } - - intel_ring_put(ce->ring); - ce->ring = ring; - - /* Context image will be updated on next pin */ - } else { - ce->ring = __intel_context_ring_size(sz); - } - -unlock: - intel_context_unlock_pinned(ce); - return err; -} - -long intel_context_get_ring_size(struct intel_context *ce) -{ - long sz = (unsigned long)READ_ONCE(ce->ring); - - if (test_bit(CONTEXT_ALLOC_BIT, &ce->flags)) { - if (intel_context_lock_pinned(ce)) - return -EINTR; - - sz = ce->ring->size; - intel_context_unlock_pinned(ce); - } - - return sz; -} diff --git a/drivers/gpu/drm/i915/gt/intel_context_param.h b/drivers/gpu/drm/i915/gt/intel_context_param.h index 3ecacc675f414..dffedd983693d 100644 --- a/drivers/gpu/drm/i915/gt/intel_context_param.h +++ b/drivers/gpu/drm/i915/gt/intel_context_param.h @@ -10,9 +10,6 @@ #include "intel_context.h" -int intel_context_set_ring_size(struct intel_context *ce, long sz); -long intel_context_get_ring_size(struct intel_context *ce); - static inline int intel_context_set_watchdog_us(struct intel_context *ce, u64 timeout_us) { diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h index 6a34243a7646a..6eefbc6dec01f 100644 --- a/include/uapi/drm/i915_drm.h +++ b/include/uapi/drm/i915_drm.h @@ -1721,24 +1721,8 @@ struct drm_i915_gem_context_param { */ #define I915_CONTEXT_PARAM_PERSISTENCE 0xb -/* - * I915_CONTEXT_PARAM_RINGSIZE: - * - * Sets the size of the CS ringbuffer to use for logical ring contexts. This - * applies a limit of how many batches can be queued to HW before the caller - * is blocked due to lack of space for more commands. - * - * Only reliably possible to be set prior to first use, i.e. during - * construction. At any later point, the current execution must be flushed as - * the ring can only be changed while the context is idle. Note, the ringsize - * can be specified as a constructor property, see - * I915_CONTEXT_CREATE_EXT_SETPARAM, but can also be set later if required. - * - * Only applies to the current set of engine and lost when those engines - * are replaced by a new mapping (see I915_CONTEXT_PARAM_ENGINES). - * - * Must be between 4 - 512 KiB, in intervals of page size [4 KiB]. - * Default is 16 KiB. +/* This API has been removed. On the off chance someone somewhere has + * attempted to use it, never re-use this context param number. */ #define I915_CONTEXT_PARAM_RINGSIZE 0xc /* Must be kept compact -- no holes and well documented */ From patchwork Mon May 3 15:57:23 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Ekstrand X-Patchwork-Id: 12236405 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8D79DC433B4 for ; Mon, 3 May 2021 15:58:05 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 2AF6261164 for ; Mon, 3 May 2021 15:58:05 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2AF6261164 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=jlekstrand.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id C3B476E8DD; Mon, 3 May 2021 15:57:59 +0000 (UTC) Received: from mail-pj1-x1033.google.com (mail-pj1-x1033.google.com [IPv6:2607:f8b0:4864:20::1033]) by gabe.freedesktop.org (Postfix) with ESMTPS id 2273A6E8DA for ; Mon, 3 May 2021 15:57:59 +0000 (UTC) Received: by mail-pj1-x1033.google.com with SMTP id gj14so3366843pjb.5 for ; Mon, 03 May 2021 08:57:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=jlekstrand-net.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=lOJc6Wbo+mGPM1Xn4HHj4tdptEl+2G1bmLy48WVpzrw=; b=012+nApqKVXF4VC2mRZT14svXbiTf0RQHRGO6EMdcXVOG2/VxsysL9sx41epx5xWYo 8WhOU/n9XXGyOEIgpCTx3JbpNT9JmwyEsDvtmZIFykxEPPwrS7SV7s20z1m/W2d9ZhXI ly7xjfGltfGS+viMAe+G7UWrSeTLXwCd88aMXFBu6ibTVrfT5qeLXB0Avcu4M9VqwUs3 cqR5H0lNc6SvPDHJrINDo20nCf/vmNXZr6WQ3QqYq/TG4jr9lvnz8OzcfEAHAPJpIZWl 3LNEIKg8+ZuEnX4NIsTFNhREq6VYCl4ifcE+BM3jzVVcwSAFhzgMiUqZ7TUtcOCc8vqH WnpA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=lOJc6Wbo+mGPM1Xn4HHj4tdptEl+2G1bmLy48WVpzrw=; b=XeHYeAlLQVOGxlB8abMgc66z+QRIVyxLNPTDauV4uX4wW9d73DrLCy506BNoIeCbNb gQdG2UWoVPLXKezYG7d2XGVbfdvbgxspqj4EIydi+NCmK/O+zbTDLtrdKWgMmsJHKgUO +H0xxqV6eVzwk6pPPA5oookCFkXBjDHwlyXDjgemD78k0dwxHUARoOrcQHXAIiqA1xKo amPuGXkeHh9hx1VUssraiCEpuoI0v4HKJ6BqX+KKqEsVdQOPDICcl2sEvzoQhq/qIVV3 Uw3/21qnrWUEqQap1RgEAS4tdlOxiv4+No257LuxJKVlsdnzDmCW5Ep25b8oYXXZCn81 vxZg== X-Gm-Message-State: AOAM531Kjk8CWGf7kE3l1iH0mp/HUPAz7Kde5dQCv/ExAvJUHltx6zEr 18uoAuJLOhy4OzlUoABfyYQKlEpy+k5/CQ== X-Google-Smtp-Source: ABdhPJwhdDqbIso57TiLnBNPfPXSgVTG09quY+DGuJaozAvisiPsctBd0H95XnkuXQrOBBh6Oew6bA== X-Received: by 2002:a17:90a:7893:: with SMTP id x19mr22544103pjk.3.1620057478540; Mon, 03 May 2021 08:57:58 -0700 (PDT) Received: from omlet.com (jfdmzpr05-ext.jf.intel.com. [134.134.139.74]) by smtp.gmail.com with ESMTPSA id gf21sm9783296pjb.20.2021.05.03.08.57.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 May 2021 08:57:57 -0700 (PDT) From: Jason Ekstrand To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH 02/27] drm/i915: Stop storing the ring size in the ring pointer Date: Mon, 3 May 2021 10:57:23 -0500 Message-Id: <20210503155748.1961781-3-jason@jlekstrand.net> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210503155748.1961781-1-jason@jlekstrand.net> References: <20210503155748.1961781-1-jason@jlekstrand.net> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jason Ekstrand Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Previously, we were storing the ring size in the ring pointer before it was actually allocated. We would then guard setting the ring size on checking for CONTEXT_ALLOC_BIT. This is error-prone at best and really only saves us a few bytes on something that already burns at least 4K. Instead, this patch adds a new ring_size field and makes everything use that. Signed-off-by: Jason Ekstrand Reviewed-by: Daniel Vetter --- drivers/gpu/drm/i915/gem/i915_gem_context.c | 3 +-- drivers/gpu/drm/i915/gt/intel_context.c | 3 ++- drivers/gpu/drm/i915/gt/intel_context.h | 5 ----- drivers/gpu/drm/i915/gt/intel_context_types.h | 1 + drivers/gpu/drm/i915/gt/intel_lrc.c | 2 +- drivers/gpu/drm/i915/gt/selftest_execlists.c | 2 +- drivers/gpu/drm/i915/gt/selftest_mocs.c | 2 +- drivers/gpu/drm/i915/gt/selftest_timeline.c | 2 +- drivers/gpu/drm/i915/gvt/scheduler.c | 7 ++----- 9 files changed, 10 insertions(+), 17 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c index e52b85b8f923d..2ba4c7e4011b4 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c @@ -211,8 +211,7 @@ static void intel_context_set_gem(struct intel_context *ce, GEM_BUG_ON(rcu_access_pointer(ce->gem_context)); RCU_INIT_POINTER(ce->gem_context, ctx); - if (!test_bit(CONTEXT_ALLOC_BIT, &ce->flags)) - ce->ring = __intel_context_ring_size(SZ_16K); + ce->ring_size = SZ_16K; if (rcu_access_pointer(ctx->vm)) { struct i915_address_space *vm; diff --git a/drivers/gpu/drm/i915/gt/intel_context.c b/drivers/gpu/drm/i915/gt/intel_context.c index 17cf2640b082b..342fa7daa08b5 100644 --- a/drivers/gpu/drm/i915/gt/intel_context.c +++ b/drivers/gpu/drm/i915/gt/intel_context.c @@ -372,7 +372,8 @@ intel_context_init(struct intel_context *ce, struct intel_engine_cs *engine) ce->engine = engine; ce->ops = engine->cops; ce->sseu = engine->sseu; - ce->ring = __intel_context_ring_size(SZ_4K); + ce->ring = NULL; + ce->ring_size = SZ_4K; ewma_runtime_init(&ce->runtime.avg); diff --git a/drivers/gpu/drm/i915/gt/intel_context.h b/drivers/gpu/drm/i915/gt/intel_context.h index f83a73a2b39fc..b10cbe8fee992 100644 --- a/drivers/gpu/drm/i915/gt/intel_context.h +++ b/drivers/gpu/drm/i915/gt/intel_context.h @@ -175,11 +175,6 @@ int intel_context_prepare_remote_request(struct intel_context *ce, struct i915_request *intel_context_create_request(struct intel_context *ce); -static inline struct intel_ring *__intel_context_ring_size(u64 sz) -{ - return u64_to_ptr(struct intel_ring, sz); -} - static inline bool intel_context_is_barrier(const struct intel_context *ce) { return test_bit(CONTEXT_BARRIER_BIT, &ce->flags); diff --git a/drivers/gpu/drm/i915/gt/intel_context_types.h b/drivers/gpu/drm/i915/gt/intel_context_types.h index ed8c447a7346b..90026c1771055 100644 --- a/drivers/gpu/drm/i915/gt/intel_context_types.h +++ b/drivers/gpu/drm/i915/gt/intel_context_types.h @@ -82,6 +82,7 @@ struct intel_context { spinlock_t signal_lock; /* protects signals, the list of requests */ struct i915_vma *state; + u32 ring_size; struct intel_ring *ring; struct intel_timeline *timeline; diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c index e86897cde9846..63193c80fb117 100644 --- a/drivers/gpu/drm/i915/gt/intel_lrc.c +++ b/drivers/gpu/drm/i915/gt/intel_lrc.c @@ -845,7 +845,7 @@ int lrc_alloc(struct intel_context *ce, struct intel_engine_cs *engine) if (IS_ERR(vma)) return PTR_ERR(vma); - ring = intel_engine_create_ring(engine, (unsigned long)ce->ring); + ring = intel_engine_create_ring(engine, ce->ring_size); if (IS_ERR(ring)) { err = PTR_ERR(ring); goto err_vma; diff --git a/drivers/gpu/drm/i915/gt/selftest_execlists.c b/drivers/gpu/drm/i915/gt/selftest_execlists.c index 1081cd36a2bd3..01d9896dd4844 100644 --- a/drivers/gpu/drm/i915/gt/selftest_execlists.c +++ b/drivers/gpu/drm/i915/gt/selftest_execlists.c @@ -2793,7 +2793,7 @@ static int __live_preempt_ring(struct intel_engine_cs *engine, goto err_ce; } - tmp->ring = __intel_context_ring_size(ring_sz); + tmp->ring_size = ring_sz; err = intel_context_pin(tmp); if (err) { diff --git a/drivers/gpu/drm/i915/gt/selftest_mocs.c b/drivers/gpu/drm/i915/gt/selftest_mocs.c index e55a887d11e2b..f343fa5fd986f 100644 --- a/drivers/gpu/drm/i915/gt/selftest_mocs.c +++ b/drivers/gpu/drm/i915/gt/selftest_mocs.c @@ -28,7 +28,7 @@ static struct intel_context *mocs_context_create(struct intel_engine_cs *engine) return ce; /* We build large requests to read the registers from the ring */ - ce->ring = __intel_context_ring_size(SZ_16K); + ce->ring_size = SZ_16K; return ce; } diff --git a/drivers/gpu/drm/i915/gt/selftest_timeline.c b/drivers/gpu/drm/i915/gt/selftest_timeline.c index 9adbd9d147bea..7eedecfb86e59 100644 --- a/drivers/gpu/drm/i915/gt/selftest_timeline.c +++ b/drivers/gpu/drm/i915/gt/selftest_timeline.c @@ -874,7 +874,7 @@ static int create_watcher(struct hwsp_watcher *w, if (IS_ERR(ce)) return PTR_ERR(ce); - ce->ring = __intel_context_ring_size(ringsz); + ce->ring_size = ringsz; w->rq = intel_context_create_request(ce); intel_context_put(ce); if (IS_ERR(w->rq)) diff --git a/drivers/gpu/drm/i915/gvt/scheduler.c b/drivers/gpu/drm/i915/gvt/scheduler.c index fc735692f21fb..99bc9fed6fbb6 100644 --- a/drivers/gpu/drm/i915/gvt/scheduler.c +++ b/drivers/gpu/drm/i915/gvt/scheduler.c @@ -1409,11 +1409,8 @@ int intel_vgpu_setup_submission(struct intel_vgpu *vgpu) intel_context_set_single_submission(ce); /* Max ring buffer size */ - if (!intel_uc_wants_guc_submission(&engine->gt->uc)) { - const unsigned int ring_size = 512 * SZ_4K; - - ce->ring = __intel_context_ring_size(ring_size); - } + if (!intel_uc_wants_guc_submission(&engine->gt->uc)) + ce->ring_size = 512 * SZ_4K; s->shadow[i] = ce; } From patchwork Mon May 3 15:57:24 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Ekstrand X-Patchwork-Id: 12236407 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C3AF9C43461 for ; Mon, 3 May 2021 15:58:09 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 710A661183 for ; 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[134.134.139.74]) by smtp.gmail.com with ESMTPSA id gf21sm9783296pjb.20.2021.05.03.08.57.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 May 2021 08:57:59 -0700 (PDT) From: Jason Ekstrand To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH 03/27] drm/i915: Drop I915_CONTEXT_PARAM_NO_ZEROMAP Date: Mon, 3 May 2021 10:57:24 -0500 Message-Id: <20210503155748.1961781-4-jason@jlekstrand.net> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210503155748.1961781-1-jason@jlekstrand.net> References: <20210503155748.1961781-1-jason@jlekstrand.net> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jason Ekstrand Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" The idea behind this param is to support OpenCL drivers with relocations because OpenCL reserves 0x0 for NULL and, if we placed memory there, it would confuse CL kernels. It was originally sent out as part of a patch series including libdrm [1] and Beignet [2] support. However, the libdrm and Beignet patches never landed in their respective upstream projects so this API has never been used. It's never been used in Mesa or any other driver, either. Dropping this API allows us to delete a small bit of code. [1]: https://lists.freedesktop.org/archives/intel-gfx/2015-May/067030.html [2]: https://lists.freedesktop.org/archives/intel-gfx/2015-May/067031.html Signed-off-by: Jason Ekstrand Reviewed-by: Daniel Vetter --- drivers/gpu/drm/i915/gem/i915_gem_context.c | 16 ++-------------- .../gpu/drm/i915/gem/i915_gem_context_types.h | 1 - drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c | 8 -------- include/uapi/drm/i915_drm.h | 4 ++++ 4 files changed, 6 insertions(+), 23 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c index 2ba4c7e4011b4..44841db04301b 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c @@ -1921,15 +1921,6 @@ static int ctx_setparam(struct drm_i915_file_private *fpriv, int ret = 0; switch (args->param) { - case I915_CONTEXT_PARAM_NO_ZEROMAP: - if (args->size) - ret = -EINVAL; - else if (args->value) - set_bit(UCONTEXT_NO_ZEROMAP, &ctx->user_flags); - else - clear_bit(UCONTEXT_NO_ZEROMAP, &ctx->user_flags); - break; - case I915_CONTEXT_PARAM_NO_ERROR_CAPTURE: if (args->size) ret = -EINVAL; @@ -1979,6 +1970,7 @@ static int ctx_setparam(struct drm_i915_file_private *fpriv, ret = set_persistence(ctx, args); break; + case I915_CONTEXT_PARAM_NO_ZEROMAP: case I915_CONTEXT_PARAM_BAN_PERIOD: case I915_CONTEXT_PARAM_RINGSIZE: default: @@ -2359,11 +2351,6 @@ int i915_gem_context_getparam_ioctl(struct drm_device *dev, void *data, return -ENOENT; switch (args->param) { - case I915_CONTEXT_PARAM_NO_ZEROMAP: - args->size = 0; - args->value = test_bit(UCONTEXT_NO_ZEROMAP, &ctx->user_flags); - break; - case I915_CONTEXT_PARAM_GTT_SIZE: args->size = 0; rcu_read_lock(); @@ -2411,6 +2398,7 @@ int i915_gem_context_getparam_ioctl(struct drm_device *dev, void *data, args->value = i915_gem_context_is_persistent(ctx); break; + case I915_CONTEXT_PARAM_NO_ZEROMAP: case I915_CONTEXT_PARAM_BAN_PERIOD: case I915_CONTEXT_PARAM_RINGSIZE: default: diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context_types.h b/drivers/gpu/drm/i915/gem/i915_gem_context_types.h index 340473aa70de0..5ae71ec936f7c 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context_types.h +++ b/drivers/gpu/drm/i915/gem/i915_gem_context_types.h @@ -129,7 +129,6 @@ struct i915_gem_context { * @user_flags: small set of booleans controlled by the user */ unsigned long user_flags; -#define UCONTEXT_NO_ZEROMAP 0 #define UCONTEXT_NO_ERROR_CAPTURE 1 #define UCONTEXT_BANNABLE 2 #define UCONTEXT_RECOVERABLE 3 diff --git a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c index 297143511f99b..b812f313422a9 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c @@ -290,7 +290,6 @@ struct i915_execbuffer { struct intel_context *reloc_context; u64 invalid_flags; /** Set of execobj.flags that are invalid */ - u32 context_flags; /** Set of execobj.flags to insert from the ctx */ u64 batch_len; /** Length of batch within object */ u32 batch_start_offset; /** Location within object of batch */ @@ -541,9 +540,6 @@ eb_validate_vma(struct i915_execbuffer *eb, entry->flags |= EXEC_OBJECT_NEEDS_GTT | __EXEC_OBJECT_NEEDS_MAP; } - if (!(entry->flags & EXEC_OBJECT_PINNED)) - entry->flags |= eb->context_flags; - return 0; } @@ -750,10 +746,6 @@ static int eb_select_context(struct i915_execbuffer *eb) if (rcu_access_pointer(ctx->vm)) eb->invalid_flags |= EXEC_OBJECT_NEEDS_GTT; - eb->context_flags = 0; - if (test_bit(UCONTEXT_NO_ZEROMAP, &ctx->user_flags)) - eb->context_flags |= __EXEC_OBJECT_NEEDS_BIAS; - return 0; } diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h index 6eefbc6dec01f..a0aaa8298f28d 100644 --- a/include/uapi/drm/i915_drm.h +++ b/include/uapi/drm/i915_drm.h @@ -1637,6 +1637,10 @@ struct drm_i915_gem_context_param { __u32 size; __u64 param; #define I915_CONTEXT_PARAM_BAN_PERIOD 0x1 +/* I915_CONTEXT_PARAM_NO_ZEROMAP has been removed. On the off chance + * someone somewhere has attempted to use it, never re-use this context + * param number. + */ #define I915_CONTEXT_PARAM_NO_ZEROMAP 0x2 #define I915_CONTEXT_PARAM_GTT_SIZE 0x3 #define I915_CONTEXT_PARAM_NO_ERROR_CAPTURE 0x4 From patchwork Mon May 3 15:57:25 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Ekstrand X-Patchwork-Id: 12236409 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 608EEC433B4 for ; Mon, 3 May 2021 15:58:12 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id EF90161183 for ; Mon, 3 May 2021 15:58:11 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org EF90161183 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=jlekstrand.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 49BD96E8E7; Mon, 3 May 2021 15:58:04 +0000 (UTC) Received: from mail-pl1-x636.google.com (mail-pl1-x636.google.com [IPv6:2607:f8b0:4864:20::636]) by gabe.freedesktop.org (Postfix) with ESMTPS id 93B6F6E8E6 for ; Mon, 3 May 2021 15:58:02 +0000 (UTC) Received: by mail-pl1-x636.google.com with SMTP id t4so2278195plc.6 for ; Mon, 03 May 2021 08:58:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=jlekstrand-net.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=mMpbnGT/o5m6wwk1nLxzI+Eprezcne1I4H2Ud9FEvt0=; b=sySln7ovpbwznIc4BzDApcUSmaBDxXXrYI88SzNEaJOlbx6Tzh6KSlQJn0xxS6GOIO SKKJWX2U4dtuFerm/Wab3ishxN2WkHGmddoOP2wHcENFFc2E0ZAgGilSthMgSudAo3HJ FblJKCAJ+qqcsoWXbyjW1Er/ags0BvN5jlR+HgIkzVyrlUE+eRZvmF8b23VmQJ3vWykh I65YYR+bdRu+d8zws3B3n07ZAsamSqFhrc08uYBKASK3mBJR96iyr6qFAuXoO3x0TJh4 4+M20PtXmxmzHFTlBmYzinvb1yNNyxLXoZm1Z55XySCV7yQ2zktyWIcqEU6HLeWb6Cce 3Xpg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=mMpbnGT/o5m6wwk1nLxzI+Eprezcne1I4H2Ud9FEvt0=; b=qTu7ZXJU65BdSqeSWDj8iPnOSqZmZRloTTTkOAflbOrDxqbsSq4qv8ISTVDJ7hKTjX rh1jI3r02zNxo164uNN0dvVmEGjsq/hRYCBOFHUKZp31iJbAS94w6uva/9fwoAakrkxB NDTzYEgHQc+GLNabF6zUxZjYhUhalPNoPU57SpnI5oIzSwgRRtq7aNLYaEJDJkUbbeJR ncKFuRy3y4E5pJsxTaIQZkGjCqxa4aSdRM/4Jp77UsqUITg40o/Khj3RBhq6NMSZ3Eoc FwE69yZygQp3xxj4qZKpQYjALtlUpPf8JA5oHL/51i0Oe29GarkGokeTn20+p/MB9/4k ZYRA== X-Gm-Message-State: AOAM531Gup3VWjVGDYvKE3MlLgTh+VOjzGtQQU3Pgu19/uqEHqW9JnGQ RhN2YUp6rucela0jLxkzI5FcYA== X-Google-Smtp-Source: ABdhPJwQRHJAPlPinEPekUAhz33hFuY1rC9w+CyqNTwCSPWOwlhmb1Vc+CwMlWBGxQ3t4UsgxR3M+g== X-Received: by 2002:a17:902:a9cb:b029:ed:61be:2cfb with SMTP id b11-20020a170902a9cbb02900ed61be2cfbmr21194446plr.9.1620057482092; Mon, 03 May 2021 08:58:02 -0700 (PDT) Received: from omlet.com (jfdmzpr05-ext.jf.intel.com. [134.134.139.74]) by smtp.gmail.com with ESMTPSA id gf21sm9783296pjb.20.2021.05.03.08.58.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 May 2021 08:58:01 -0700 (PDT) From: Jason Ekstrand To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH 04/27] drm/i915/gem: Set the watchdog timeout directly in intel_context_set_gem (v2) Date: Mon, 3 May 2021 10:57:25 -0500 Message-Id: <20210503155748.1961781-5-jason@jlekstrand.net> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210503155748.1961781-1-jason@jlekstrand.net> References: <20210503155748.1961781-1-jason@jlekstrand.net> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Daniel Vetter , Jason Ekstrand Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Instead of handling it like a context param, unconditionally set it when intel_contexts are created. For years we've had the idea of a watchdog uAPI floating about. The aim was for media, so that they could set very tight deadlines for their transcodes jobs, so that if you have a corrupt bitstream (especially for decoding) you don't hang your desktop too hard. But it's been stuck in limbo since forever, and this simplifies things a bit in preparation for the proto-context work. If we decide to actually make said uAPI a reality, we can do it through the proto- context easily enough. This does mean that we move from reading the request_timeout_ms param once per engine when engines are created instead of once at context creation. If someone changes request_timeout_ms between creating a context and setting engines, it will mean that they get the new timeout. If someone races setting request_timeout_ms and context creation, they can theoretically end up with different timeouts. However, since both of these are fairly harmless and require changing kernel params, we don't care. v2 (Tvrtko Ursulin): - Add a comment about races with request_timeout_ms Signed-off-by: Jason Ekstrand Reviewed-by: Daniel Vetter --- drivers/gpu/drm/i915/gem/i915_gem_context.c | 44 +++---------------- .../gpu/drm/i915/gem/i915_gem_context_types.h | 4 -- drivers/gpu/drm/i915/gt/intel_context_param.h | 3 +- 3 files changed, 7 insertions(+), 44 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c index 44841db04301b..2207e8ea6f065 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c @@ -232,7 +232,12 @@ static void intel_context_set_gem(struct intel_context *ce, intel_engine_has_timeslices(ce->engine)) __set_bit(CONTEXT_USE_SEMAPHORES, &ce->flags); - intel_context_set_watchdog_us(ce, ctx->watchdog.timeout_us); + if (IS_ACTIVE(CONFIG_DRM_I915_REQUEST_TIMEOUT) && + ctx->i915->params.request_timeout_ms) { + unsigned int timeout_ms = ctx->i915->params.request_timeout_ms; + + intel_context_set_watchdog_us(ce, (u64)timeout_ms * 1000); + } } static void __free_engines(struct i915_gem_engines *e, unsigned int count) @@ -791,41 +796,6 @@ static void __assign_timeline(struct i915_gem_context *ctx, context_apply_all(ctx, __apply_timeline, timeline); } -static int __apply_watchdog(struct intel_context *ce, void *timeout_us) -{ - return intel_context_set_watchdog_us(ce, (uintptr_t)timeout_us); -} - -static int -__set_watchdog(struct i915_gem_context *ctx, unsigned long timeout_us) -{ - int ret; - - ret = context_apply_all(ctx, __apply_watchdog, - (void *)(uintptr_t)timeout_us); - if (!ret) - ctx->watchdog.timeout_us = timeout_us; - - return ret; -} - -static void __set_default_fence_expiry(struct i915_gem_context *ctx) -{ - struct drm_i915_private *i915 = ctx->i915; - int ret; - - if (!IS_ACTIVE(CONFIG_DRM_I915_REQUEST_TIMEOUT) || - !i915->params.request_timeout_ms) - return; - - /* Default expiry for user fences. */ - ret = __set_watchdog(ctx, i915->params.request_timeout_ms * 1000); - if (ret) - drm_notice(&i915->drm, - "Failed to configure default fence expiry! (%d)", - ret); -} - static struct i915_gem_context * i915_gem_create_context(struct drm_i915_private *i915, unsigned int flags) { @@ -870,8 +840,6 @@ i915_gem_create_context(struct drm_i915_private *i915, unsigned int flags) intel_timeline_put(timeline); } - __set_default_fence_expiry(ctx); - trace_i915_context_create(ctx); return ctx; diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context_types.h b/drivers/gpu/drm/i915/gem/i915_gem_context_types.h index 5ae71ec936f7c..676592e27e7d2 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context_types.h +++ b/drivers/gpu/drm/i915/gem/i915_gem_context_types.h @@ -153,10 +153,6 @@ struct i915_gem_context { */ atomic_t active_count; - struct { - u64 timeout_us; - } watchdog; - /** * @hang_timestamp: The last time(s) this context caused a GPU hang */ diff --git a/drivers/gpu/drm/i915/gt/intel_context_param.h b/drivers/gpu/drm/i915/gt/intel_context_param.h index dffedd983693d..0c69cb42d075c 100644 --- a/drivers/gpu/drm/i915/gt/intel_context_param.h +++ b/drivers/gpu/drm/i915/gt/intel_context_param.h @@ -10,11 +10,10 @@ #include "intel_context.h" -static inline int +static inline void intel_context_set_watchdog_us(struct intel_context *ce, u64 timeout_us) { ce->watchdog.timeout_us = timeout_us; - return 0; } #endif /* INTEL_CONTEXT_PARAM_H */ From patchwork Mon May 3 15:57:26 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Ekstrand X-Patchwork-Id: 12236411 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.7 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNWANTED_LANGUAGE_BODY, URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 47263C43461 for ; Mon, 3 May 2021 15:58:16 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id E66CE610C8 for ; Mon, 3 May 2021 15:58:15 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E66CE610C8 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=jlekstrand.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 8D5DF6E8EA; Mon, 3 May 2021 15:58:05 +0000 (UTC) Received: from mail-pf1-x431.google.com (mail-pf1-x431.google.com [IPv6:2607:f8b0:4864:20::431]) by gabe.freedesktop.org (Postfix) with ESMTPS id 4904E6E8E6 for ; Mon, 3 May 2021 15:58:04 +0000 (UTC) Received: by mail-pf1-x431.google.com with SMTP id i13so4493108pfu.2 for ; Mon, 03 May 2021 08:58:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=jlekstrand-net.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=+kRTuwDNC4ils+7NiZYLhZ8grmBdiU9nKzwhxjTQvJI=; b=j5nA1WEV0MW7nVoQGeNUyzdHvMuXYr4COXsiXnsrmxg/ErXLAnwHfYn5SFvmMPOLfP sWFUiWBLa7dfWAosYUQH0JebWX5gUyKY2/LqR9gPhzdPs0Mfg6Xo1oBF3yh/GyXA1LEn 0rB7Z2ie+Zu7WnhIqssG9pz9K3AYR9vxOcJBeynYn+yKr+aSA51SrdBApN5rI0uO1WFf SBSi7/Icg8WMeA96v9NO5tOCZG0+ODSf6es8EBuPoAV8IHARZs5YuGxCsbv9h2XmLfMs 17Bl/rfmUDHJ8j400YK9Ytsg6fQSkrgquiVQZqxx0Pi0xT+KPxgzOCrI1Ao9dJfeEwil GjUQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=+kRTuwDNC4ils+7NiZYLhZ8grmBdiU9nKzwhxjTQvJI=; b=e1l4ryFA7AqnKPAQc4p5jqXa4fChsT8Y6VDvxn/Up4yMCUoI+mZWkhFaKkFmpbhkmx GqHfgS1HB+3EQQwzgUURHDjeaHuWwsJXyOlnPLBYm85l+I5DI1GN1YIdhup4KS293Gs0 s4Ya22w0bBHQCJKdyAJds2U85YlWuzx6jv7n/LMJGt8O5a6kLJDjd8BzwmirTEWAP3c3 6G8AnpZJW2K4BTLFVcyrppDAIn43fke/p/CURStfNC4nlSEf5mte8a5v4V7qmeoViUFc k8TScjlFx3+W7sqRRrfQ7zvsE0VeYV043AJfKUu8MPVdIvutzKplwwDyTQOkgDOm1Ct/ f4sQ== X-Gm-Message-State: AOAM531IMaXlUAmREs9Fe+jrDJnbJv5eOFdbN+vS7B7DeK8jMNGNlhUg LzCdelDNsg5wOE18q1oEaqHchA== X-Google-Smtp-Source: ABdhPJz31Ga6rX/kQKFnu4V2Hb4YUUxr1MNfvPM0/6o76v9yyJRCAC5RXRbQ60J3W/muCEQpFlhzSw== X-Received: by 2002:a63:930d:: with SMTP id b13mr19039427pge.213.1620057483854; Mon, 03 May 2021 08:58:03 -0700 (PDT) Received: from omlet.com (jfdmzpr05-ext.jf.intel.com. [134.134.139.74]) by smtp.gmail.com with ESMTPSA id gf21sm9783296pjb.20.2021.05.03.08.58.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 May 2021 08:58:03 -0700 (PDT) From: Jason Ekstrand To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH 05/27] drm/i915/gem: Return void from context_apply_all Date: Mon, 3 May 2021 10:57:26 -0500 Message-Id: <20210503155748.1961781-6-jason@jlekstrand.net> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210503155748.1961781-1-jason@jlekstrand.net> References: <20210503155748.1961781-1-jason@jlekstrand.net> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Daniel Vetter , Jason Ekstrand Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" None of the callbacks we use with it return an error code anymore; they all return 0 unconditionally. Signed-off-by: Jason Ekstrand Reviewed-by: Daniel Vetter --- drivers/gpu/drm/i915/gem/i915_gem_context.c | 26 +++++++-------------- 1 file changed, 8 insertions(+), 18 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c index 2207e8ea6f065..d6f342e605254 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c @@ -718,32 +718,25 @@ __context_engines_await(const struct i915_gem_context *ctx, return engines; } -static int +static void context_apply_all(struct i915_gem_context *ctx, - int (*fn)(struct intel_context *ce, void *data), + void (*fn)(struct intel_context *ce, void *data), void *data) { struct i915_gem_engines_iter it; struct i915_gem_engines *e; struct intel_context *ce; - int err = 0; e = __context_engines_await(ctx, NULL); - for_each_gem_engine(ce, e, it) { - err = fn(ce, data); - if (err) - break; - } + for_each_gem_engine(ce, e, it) + fn(ce, data); i915_sw_fence_complete(&e->fence); - - return err; } -static int __apply_ppgtt(struct intel_context *ce, void *vm) +static void __apply_ppgtt(struct intel_context *ce, void *vm) { i915_vm_put(ce->vm); ce->vm = i915_vm_get(vm); - return 0; } static struct i915_address_space * @@ -783,10 +776,9 @@ static void __set_timeline(struct intel_timeline **dst, intel_timeline_put(old); } -static int __apply_timeline(struct intel_context *ce, void *timeline) +static void __apply_timeline(struct intel_context *ce, void *timeline) { __set_timeline(&ce->timeline, timeline); - return 0; } static void __assign_timeline(struct i915_gem_context *ctx, @@ -1842,19 +1834,17 @@ set_persistence(struct i915_gem_context *ctx, return __context_set_persistence(ctx, args->value); } -static int __apply_priority(struct intel_context *ce, void *arg) +static void __apply_priority(struct intel_context *ce, void *arg) { struct i915_gem_context *ctx = arg; if (!intel_engine_has_timeslices(ce->engine)) - return 0; + return; if (ctx->sched.priority >= I915_PRIORITY_NORMAL) intel_context_set_use_semaphores(ce); else intel_context_clear_use_semaphores(ce); - - return 0; } static int set_priority(struct i915_gem_context *ctx, From patchwork Mon May 3 15:57:27 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Ekstrand X-Patchwork-Id: 12236413 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 71A0AC433B4 for ; Mon, 3 May 2021 15:58:19 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 0E91C61164 for ; 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[134.134.139.74]) by smtp.gmail.com with ESMTPSA id gf21sm9783296pjb.20.2021.05.03.08.58.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 May 2021 08:58:05 -0700 (PDT) From: Jason Ekstrand To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH 06/27] drm/i915: Drop the CONTEXT_CLONE API Date: Mon, 3 May 2021 10:57:27 -0500 Message-Id: <20210503155748.1961781-7-jason@jlekstrand.net> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210503155748.1961781-1-jason@jlekstrand.net> References: <20210503155748.1961781-1-jason@jlekstrand.net> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jason Ekstrand , Tvrtko Ursulin Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" This API allows one context to grab bits out of another context upon creation. It can be used as a short-cut for setparam(getparam()) for things like I915_CONTEXT_PARAM_VM. However, it's never been used by any real userspace. It's used by a few IGT tests and that's it. Since it doesn't add any real value (most of the stuff you can CLONE you can copy in other ways), drop it. There is one thing that this API allows you to clone which you cannot clone via getparam/setparam: timelines. However, timelines are an implementation detail of i915 and not really something that needs to be exposed to userspace. Also, sharing timelines between contexts isn't obviously useful and supporting it has the potential to complicate i915 internally. It also doesn't add any functionality that the client can't get in other ways. If a client really wants a shared timeline, they can use a syncobj and set it as an in and out fence on every submit. Signed-off-by: Jason Ekstrand Cc: Tvrtko Ursulin Reviewed-by: Daniel Vetter --- drivers/gpu/drm/i915/gem/i915_gem_context.c | 199 +----------------- .../drm/i915/gt/intel_execlists_submission.c | 28 --- .../drm/i915/gt/intel_execlists_submission.h | 3 - include/uapi/drm/i915_drm.h | 16 +- 4 files changed, 6 insertions(+), 240 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c index d6f342e605254..308a63f778faf 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c @@ -1958,207 +1958,14 @@ static int create_setparam(struct i915_user_extension __user *ext, void *data) return ctx_setparam(arg->fpriv, arg->ctx, &local.param); } -static int clone_engines(struct i915_gem_context *dst, - struct i915_gem_context *src) +static int invalid_ext(struct i915_user_extension __user *ext, void *data) { - struct i915_gem_engines *clone, *e; - bool user_engines; - unsigned long n; - - e = __context_engines_await(src, &user_engines); - if (!e) - return -ENOENT; - - clone = alloc_engines(e->num_engines); - if (!clone) - goto err_unlock; - - for (n = 0; n < e->num_engines; n++) { - struct intel_engine_cs *engine; - - if (!e->engines[n]) { - clone->engines[n] = NULL; - continue; - } - engine = e->engines[n]->engine; - - /* - * Virtual engines are singletons; they can only exist - * inside a single context, because they embed their - * HW context... As each virtual context implies a single - * timeline (each engine can only dequeue a single request - * at any time), it would be surprising for two contexts - * to use the same engine. So let's create a copy of - * the virtual engine instead. - */ - if (intel_engine_is_virtual(engine)) - clone->engines[n] = - intel_execlists_clone_virtual(engine); - else - clone->engines[n] = intel_context_create(engine); - if (IS_ERR_OR_NULL(clone->engines[n])) { - __free_engines(clone, n); - goto err_unlock; - } - - intel_context_set_gem(clone->engines[n], dst); - } - clone->num_engines = n; - i915_sw_fence_complete(&e->fence); - - /* Serialised by constructor */ - engines_idle_release(dst, rcu_replace_pointer(dst->engines, clone, 1)); - if (user_engines) - i915_gem_context_set_user_engines(dst); - else - i915_gem_context_clear_user_engines(dst); - return 0; - -err_unlock: - i915_sw_fence_complete(&e->fence); - return -ENOMEM; -} - -static int clone_flags(struct i915_gem_context *dst, - struct i915_gem_context *src) -{ - dst->user_flags = src->user_flags; - return 0; -} - -static int clone_schedattr(struct i915_gem_context *dst, - struct i915_gem_context *src) -{ - dst->sched = src->sched; - return 0; -} - -static int clone_sseu(struct i915_gem_context *dst, - struct i915_gem_context *src) -{ - struct i915_gem_engines *e = i915_gem_context_lock_engines(src); - struct i915_gem_engines *clone; - unsigned long n; - int err; - - /* no locking required; sole access under constructor*/ - clone = __context_engines_static(dst); - if (e->num_engines != clone->num_engines) { - err = -EINVAL; - goto unlock; - } - - for (n = 0; n < e->num_engines; n++) { - struct intel_context *ce = e->engines[n]; - - if (clone->engines[n]->engine->class != ce->engine->class) { - /* Must have compatible engine maps! */ - err = -EINVAL; - goto unlock; - } - - /* serialises with set_sseu */ - err = intel_context_lock_pinned(ce); - if (err) - goto unlock; - - clone->engines[n]->sseu = ce->sseu; - intel_context_unlock_pinned(ce); - } - - err = 0; -unlock: - i915_gem_context_unlock_engines(src); - return err; -} - -static int clone_timeline(struct i915_gem_context *dst, - struct i915_gem_context *src) -{ - if (src->timeline) - __assign_timeline(dst, src->timeline); - - return 0; -} - -static int clone_vm(struct i915_gem_context *dst, - struct i915_gem_context *src) -{ - struct i915_address_space *vm; - int err = 0; - - if (!rcu_access_pointer(src->vm)) - return 0; - - rcu_read_lock(); - vm = context_get_vm_rcu(src); - rcu_read_unlock(); - - if (!mutex_lock_interruptible(&dst->mutex)) { - __assign_ppgtt(dst, vm); - mutex_unlock(&dst->mutex); - } else { - err = -EINTR; - } - - i915_vm_put(vm); - return err; -} - -static int create_clone(struct i915_user_extension __user *ext, void *data) -{ - static int (* const fn[])(struct i915_gem_context *dst, - struct i915_gem_context *src) = { -#define MAP(x, y) [ilog2(I915_CONTEXT_CLONE_##x)] = y - MAP(ENGINES, clone_engines), - MAP(FLAGS, clone_flags), - MAP(SCHEDATTR, clone_schedattr), - MAP(SSEU, clone_sseu), - MAP(TIMELINE, clone_timeline), - MAP(VM, clone_vm), -#undef MAP - }; - struct drm_i915_gem_context_create_ext_clone local; - const struct create_ext *arg = data; - struct i915_gem_context *dst = arg->ctx; - struct i915_gem_context *src; - int err, bit; - - if (copy_from_user(&local, ext, sizeof(local))) - return -EFAULT; - - BUILD_BUG_ON(GENMASK(BITS_PER_TYPE(local.flags) - 1, ARRAY_SIZE(fn)) != - I915_CONTEXT_CLONE_UNKNOWN); - - if (local.flags & I915_CONTEXT_CLONE_UNKNOWN) - return -EINVAL; - - if (local.rsvd) - return -EINVAL; - - rcu_read_lock(); - src = __i915_gem_context_lookup_rcu(arg->fpriv, local.clone_id); - rcu_read_unlock(); - if (!src) - return -ENOENT; - - GEM_BUG_ON(src == dst); - - for (bit = 0; bit < ARRAY_SIZE(fn); bit++) { - if (!(local.flags & BIT(bit))) - continue; - - err = fn[bit](dst, src); - if (err) - return err; - } - - return 0; + return -EINVAL; } static const i915_user_extension_fn create_extensions[] = { [I915_CONTEXT_CREATE_EXT_SETPARAM] = create_setparam, - [I915_CONTEXT_CREATE_EXT_CLONE] = create_clone, + [I915_CONTEXT_CREATE_EXT_CLONE] = invalid_ext, }; static bool client_is_banned(struct drm_i915_file_private *file_priv) diff --git a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c index de124870af44d..0e8c320927d15 100644 --- a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c +++ b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c @@ -3736,34 +3736,6 @@ intel_execlists_create_virtual(struct intel_engine_cs **siblings, return ERR_PTR(err); } -struct intel_context * -intel_execlists_clone_virtual(struct intel_engine_cs *src) -{ - struct virtual_engine *se = to_virtual_engine(src); - struct intel_context *dst; - - dst = intel_execlists_create_virtual(se->siblings, - se->num_siblings); - if (IS_ERR(dst)) - return dst; - - if (se->num_bonds) { - struct virtual_engine *de = to_virtual_engine(dst->engine); - - de->bonds = kmemdup(se->bonds, - sizeof(*se->bonds) * se->num_bonds, - GFP_KERNEL); - if (!de->bonds) { - intel_context_put(dst); - return ERR_PTR(-ENOMEM); - } - - de->num_bonds = se->num_bonds; - } - - return dst; -} - int intel_virtual_engine_attach_bond(struct intel_engine_cs *engine, const struct intel_engine_cs *master, const struct intel_engine_cs *sibling) diff --git a/drivers/gpu/drm/i915/gt/intel_execlists_submission.h b/drivers/gpu/drm/i915/gt/intel_execlists_submission.h index fd61dae820e9e..bab3d37cf3f98 100644 --- a/drivers/gpu/drm/i915/gt/intel_execlists_submission.h +++ b/drivers/gpu/drm/i915/gt/intel_execlists_submission.h @@ -36,9 +36,6 @@ struct intel_context * intel_execlists_create_virtual(struct intel_engine_cs **siblings, unsigned int count); -struct intel_context * -intel_execlists_clone_virtual(struct intel_engine_cs *src); - int intel_virtual_engine_attach_bond(struct intel_engine_cs *engine, const struct intel_engine_cs *master, const struct intel_engine_cs *sibling); diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h index a0aaa8298f28d..75a71b6756ed8 100644 --- a/include/uapi/drm/i915_drm.h +++ b/include/uapi/drm/i915_drm.h @@ -1887,20 +1887,10 @@ struct drm_i915_gem_context_create_ext_setparam { struct drm_i915_gem_context_param param; }; -struct drm_i915_gem_context_create_ext_clone { +/* This API has been removed. On the off chance someone somewhere has + * attempted to use it, never re-use this extension number. + */ #define I915_CONTEXT_CREATE_EXT_CLONE 1 - struct i915_user_extension base; - __u32 clone_id; - __u32 flags; -#define I915_CONTEXT_CLONE_ENGINES (1u << 0) -#define I915_CONTEXT_CLONE_FLAGS (1u << 1) -#define I915_CONTEXT_CLONE_SCHEDATTR (1u << 2) -#define I915_CONTEXT_CLONE_SSEU (1u << 3) -#define I915_CONTEXT_CLONE_TIMELINE (1u << 4) -#define I915_CONTEXT_CLONE_VM (1u << 5) -#define I915_CONTEXT_CLONE_UNKNOWN -(I915_CONTEXT_CLONE_VM << 1) - __u64 rsvd; -}; struct drm_i915_gem_context_destroy { __u32 ctx_id; From patchwork Mon May 3 15:57:28 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Ekstrand X-Patchwork-Id: 12236415 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4D4F3C43460 for ; Mon, 3 May 2021 15:58:21 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id EADB3610C8 for ; Mon, 3 May 2021 15:58:20 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org EADB3610C8 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=jlekstrand.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id DDF806E8EE; Mon, 3 May 2021 15:58:08 +0000 (UTC) Received: from mail-pj1-x1033.google.com (mail-pj1-x1033.google.com [IPv6:2607:f8b0:4864:20::1033]) by gabe.freedesktop.org (Postfix) with ESMTPS id C83F06E8EC for ; Mon, 3 May 2021 15:58:07 +0000 (UTC) Received: by mail-pj1-x1033.google.com with SMTP id k3-20020a17090ad083b0290155b934a295so6016338pju.2 for ; Mon, 03 May 2021 08:58:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=jlekstrand-net.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=adRJXWwDbj2z1JFjTBWCjkE+NUrD/6lH6VL4ZYWbp7Q=; b=fK7RpwZ1QHzLarCCSOTBg8qVFXyFBEIeFU1UQMJuv7JpintTNiEkqFapTaDEKSuMcy aBxJAxFEIMToeQrO4HTEGHyvG5I7ewT4Wal1CL5r34Cn7acpCfkd08G3QpiM/qc0apAT 7FySxVRhHmYlvI4D9deJc6XsfXVP9d6EGM3AWstWBuJVcz9H4nPmMy21kI2eCMZwB4/w x/YK34UYvszgSHMFy27Dqz2RsMmj50nJaL6RNBR3s3+dxLwrUS1AZKgHRC2vVEUU+wRe 7LRu9WIp3WpMR6VC4m2TBg3cIp4UxdE/mewyC9E+8rcskCS+hXGzGUtvvLypz1ANjrj4 Lveg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=adRJXWwDbj2z1JFjTBWCjkE+NUrD/6lH6VL4ZYWbp7Q=; b=nHSEaCziv7dOEGX2WweSAnrtwmGgEqJ/cbaLuak25vaXOQIdzVaDsCexrwD0LYvEzc /SrykfZYcgT5R5TR+3mcprUhFZrvx6P4EXxGTvWaN1Cuaq/ThlDQ2NsIlgzBU1Vveu2g OrsM3YLY8lkQah4Hm6RnvEMFR53+uRv+Xdrg2trAhLDLoZLjVger6W2coRwxxD7YdD0k 8K8BM1UM9sexFlCrYZvFrbuga9CEdbiFyCyq5anrwqLDirKd1mvTOZk/m1gbbwmMNWlW h3vu9StpuqbJAzMJ1REUccvnKqleUmQ2+wOQtl35fl5wtUKcqdS7+Sj3wikQdQRplkTJ K2NQ== X-Gm-Message-State: AOAM5305c0dF2vONKPHQYh039h1KKqELV9HI8EQVUgTG2hPwufoqXAZP X3QY02816O34y56CA+J1ZUaVew== X-Google-Smtp-Source: ABdhPJw1JI0a7PfUx0SggXvKlCsVT9n4ftfRZxMs0G4OmcsVvHzRaXVF9ahy1KldM/Dv9Z2eFmGIRg== X-Received: by 2002:a17:902:a70f:b029:ea:d4a8:6a84 with SMTP id w15-20020a170902a70fb02900ead4a86a84mr21352143plq.42.1620057487343; Mon, 03 May 2021 08:58:07 -0700 (PDT) Received: from omlet.com (jfdmzpr05-ext.jf.intel.com. [134.134.139.74]) by smtp.gmail.com with ESMTPSA id gf21sm9783296pjb.20.2021.05.03.08.58.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 May 2021 08:58:06 -0700 (PDT) From: Jason Ekstrand To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH 07/27] drm/i915: Implement SINGLE_TIMELINE with a syncobj (v4) Date: Mon, 3 May 2021 10:57:28 -0500 Message-Id: <20210503155748.1961781-8-jason@jlekstrand.net> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210503155748.1961781-1-jason@jlekstrand.net> References: <20210503155748.1961781-1-jason@jlekstrand.net> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Daniel Vetter , Jason Ekstrand Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" This API is entirely unnecessary and I'd love to get rid of it. If userspace wants a single timeline across multiple contexts, they can either use implicit synchronization or a syncobj, both of which existed at the time this feature landed. The justification given at the time was that it would help GL drivers which are inherently single-timeline. However, neither of our GL drivers actually wanted the feature. i965 was already in maintenance mode at the time and iris uses syncobj for everything. Unfortunately, as much as I'd love to get rid of it, it is used by the media driver so we can't do that. We can, however, do the next-best thing which is to embed a syncobj in the context and do exactly what we'd expect from userspace internally. This isn't an entirely identical implementation because it's no longer atomic if userspace races with itself by calling execbuffer2 twice simultaneously from different threads. It won't crash in that case; it just doesn't guarantee any ordering between those two submits. It also means that sync files exported from different engines on a SINGLE_TIMELINE context will have different fence contexts. This is visible to userspace if it looks at the obj_name field of sync_fence_info. Moving SINGLE_TIMELINE to a syncobj emulation has a couple of technical advantages beyond mere annoyance. One is that intel_timeline is no longer an api-visible object and can remain entirely an implementation detail. This may be advantageous as we make scheduler changes going forward. Second is that, together with deleting the CLONE_CONTEXT API, we should now have a 1:1 mapping between intel_context and intel_timeline which may help us reduce locking. v2 (Tvrtko Ursulin): - Update the comment on i915_gem_context::syncobj to mention that it's an emulation and the possible race if userspace calls execbuffer2 twice on the same context concurrently. v2 (Jason Ekstrand): - Wrap the checks for eb.gem_context->syncobj in unlikely() - Drop the dma_fence reference - Improved commit message v3 (Jason Ekstrand): - Move the dma_fence_put() to before the error exit v4 (Tvrtko Ursulin): - Add a comment about fence contexts to the commit message Signed-off-by: Jason Ekstrand Reviewed-by: Daniel Vetter --- drivers/gpu/drm/i915/gem/i915_gem_context.c | 49 +++++-------------- .../gpu/drm/i915/gem/i915_gem_context_types.h | 14 +++++- .../gpu/drm/i915/gem/i915_gem_execbuffer.c | 16 ++++++ 3 files changed, 40 insertions(+), 39 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c index 308a63f778faf..3f99ef5a72f57 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c @@ -67,6 +67,8 @@ #include #include +#include + #include "gt/gen6_ppgtt.h" #include "gt/intel_context.h" #include "gt/intel_context_param.h" @@ -224,10 +226,6 @@ static void intel_context_set_gem(struct intel_context *ce, ce->vm = vm; } - GEM_BUG_ON(ce->timeline); - if (ctx->timeline) - ce->timeline = intel_timeline_get(ctx->timeline); - if (ctx->sched.priority >= I915_PRIORITY_NORMAL && intel_engine_has_timeslices(ce->engine)) __set_bit(CONTEXT_USE_SEMAPHORES, &ce->flags); @@ -351,9 +349,6 @@ void i915_gem_context_release(struct kref *ref) mutex_destroy(&ctx->engines_mutex); mutex_destroy(&ctx->lut_mutex); - if (ctx->timeline) - intel_timeline_put(ctx->timeline); - put_pid(ctx->pid); mutex_destroy(&ctx->mutex); @@ -570,6 +565,9 @@ static void context_close(struct i915_gem_context *ctx) if (vm) i915_vm_close(vm); + if (ctx->syncobj) + drm_syncobj_put(ctx->syncobj); + ctx->file_priv = ERR_PTR(-EBADF); /* @@ -765,33 +763,11 @@ static void __assign_ppgtt(struct i915_gem_context *ctx, i915_vm_close(vm); } -static void __set_timeline(struct intel_timeline **dst, - struct intel_timeline *src) -{ - struct intel_timeline *old = *dst; - - *dst = src ? intel_timeline_get(src) : NULL; - - if (old) - intel_timeline_put(old); -} - -static void __apply_timeline(struct intel_context *ce, void *timeline) -{ - __set_timeline(&ce->timeline, timeline); -} - -static void __assign_timeline(struct i915_gem_context *ctx, - struct intel_timeline *timeline) -{ - __set_timeline(&ctx->timeline, timeline); - context_apply_all(ctx, __apply_timeline, timeline); -} - static struct i915_gem_context * i915_gem_create_context(struct drm_i915_private *i915, unsigned int flags) { struct i915_gem_context *ctx; + int ret; if (flags & I915_CONTEXT_CREATE_FLAGS_SINGLE_TIMELINE && !HAS_EXECLISTS(i915)) @@ -820,16 +796,13 @@ i915_gem_create_context(struct drm_i915_private *i915, unsigned int flags) } if (flags & I915_CONTEXT_CREATE_FLAGS_SINGLE_TIMELINE) { - struct intel_timeline *timeline; - - timeline = intel_timeline_create(&i915->gt); - if (IS_ERR(timeline)) { + ret = drm_syncobj_create(&ctx->syncobj, + DRM_SYNCOBJ_CREATE_SIGNALED, + NULL); + if (ret) { context_close(ctx); - return ERR_CAST(timeline); + return ERR_PTR(ret); } - - __assign_timeline(ctx, timeline); - intel_timeline_put(timeline); } trace_i915_context_create(ctx); diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context_types.h b/drivers/gpu/drm/i915/gem/i915_gem_context_types.h index 676592e27e7d2..df76767f0c41b 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context_types.h +++ b/drivers/gpu/drm/i915/gem/i915_gem_context_types.h @@ -83,7 +83,19 @@ struct i915_gem_context { struct i915_gem_engines __rcu *engines; struct mutex engines_mutex; /* guards writes to engines */ - struct intel_timeline *timeline; + /** + * @syncobj: Shared timeline syncobj + * + * When the SHARED_TIMELINE flag is set on context creation, we + * emulate a single timeline across all engines using this syncobj. + * For every execbuffer2 call, this syncobj is used as both an in- + * and out-fence. Unlike the real intel_timeline, this doesn't + * provide perfect atomic in-order guarantees if the client races + * with itself by calling execbuffer2 twice concurrently. However, + * if userspace races with itself, that's not likely to yield well- + * defined results anyway so we choose to not care. + */ + struct drm_syncobj *syncobj; /** * @vm: unique address space (GTT) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c index b812f313422a9..d640bba6ad9ab 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c @@ -3460,6 +3460,16 @@ i915_gem_do_execbuffer(struct drm_device *dev, goto err_vma; } + if (unlikely(eb.gem_context->syncobj)) { + struct dma_fence *fence; + + fence = drm_syncobj_fence_get(eb.gem_context->syncobj); + err = i915_request_await_dma_fence(eb.request, fence); + dma_fence_put(fence); + if (err) + goto err_ext; + } + if (in_fence) { if (args->flags & I915_EXEC_FENCE_SUBMIT) err = i915_request_await_execution(eb.request, @@ -3517,6 +3527,12 @@ i915_gem_do_execbuffer(struct drm_device *dev, fput(out_fence->file); } } + + if (unlikely(eb.gem_context->syncobj)) { + drm_syncobj_replace_fence(eb.gem_context->syncobj, + &eb.request->fence); + } + i915_request_put(eb.request); err_vma: From patchwork Mon May 3 15:57:29 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Ekstrand X-Patchwork-Id: 12236417 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5CECAC433ED for ; Mon, 3 May 2021 15:58:24 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id F3E3161164 for ; Mon, 3 May 2021 15:58:23 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org F3E3161164 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=jlekstrand.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 7A4E36E8F3; Mon, 3 May 2021 15:58:11 +0000 (UTC) Received: from mail-pj1-x1035.google.com (mail-pj1-x1035.google.com [IPv6:2607:f8b0:4864:20::1035]) by gabe.freedesktop.org (Postfix) with ESMTPS id ACFD589C6E for ; Mon, 3 May 2021 15:58:09 +0000 (UTC) Received: by mail-pj1-x1035.google.com with SMTP id m6-20020a17090a8586b02901507e1acf0fso3622380pjn.3 for ; Mon, 03 May 2021 08:58:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=jlekstrand-net.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=7OEZSj81l6tVKCavFJkWpFNqo57ywrKdv2bvXTYOqD4=; b=QfaLD/a0otj0p/z5gDlSWMQvtsKsuqEGEWP8lXEHvjkvLcFubr71R51ZBJj/RXw0sq SB3WWocaiXDsr/3m0PpmYfNtWpSKjjRQ/Ghn5t4EfpnVjUga64R7IySZprKpcs2KNL90 tpGaT9K5g10AZ4/N0XSLAJ41IVYKE0NIf1TjSDjyoMTE62V1ISQIXTwbqwOhcNHuheVx J8TsSmJxVmdUbtkKLvwIae9QekYKpgCNSxsoPEyqVAw0+gFCpezg1unx9gCuJwbenIke 4S13Z9W/xKbmwHI3oXljC59hiybLFp9ih1OozrkyZ9k/veMoajXD28JNvIDZGxvLcH6R mOdQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=7OEZSj81l6tVKCavFJkWpFNqo57ywrKdv2bvXTYOqD4=; b=qfJsupHCl+2suW30LFuwACdd1bjBQ69eKsCag2GFMpNCukYaUPNzN+ulmuUc91p750 +08c6Y8VQQC0wPF91e6fLudDygt58dKZUrhazfLxkFI75tXdqZtjClhYCfdI78KVl94O u1+I2jNQZLlVYzrRx/8o0lIXo+YdW5UESlgpDA4W2nKlh6P/6lm4FZMbikqPpp9pkhgB fVkisoJcJu+yCkIHSrLsmn6pOGShXLwxruQ9DOfw/LL5Fezt0AVfjlm+lr8tGsRHzhr3 jVJsgPngX0v9VJ3bMxDHnIWKonoMeiG/9J4FzyoLATHi773dvfDrxqmAkAXjSgwNd1tb /lDg== X-Gm-Message-State: AOAM531VAdU/C3CzVgxzy0Hd6RZ+mZibb7jmgDD+VQX/JENyfuKToVue koPgaorEIQG21CUUlGBbcQtMtfVy8o9CkQ== X-Google-Smtp-Source: ABdhPJxHEgLhZjNL80lcpD6W3LbqO7xJaRQC3GtoXhAsicWVmsy/y86zq1/d6VKpCt4PuwBTf1AJYQ== X-Received: by 2002:a17:902:4:b029:ee:8f40:ecbf with SMTP id 4-20020a1709020004b02900ee8f40ecbfmr20643769pla.28.1620057489151; Mon, 03 May 2021 08:58:09 -0700 (PDT) Received: from omlet.com (jfdmzpr05-ext.jf.intel.com. [134.134.139.74]) by smtp.gmail.com with ESMTPSA id gf21sm9783296pjb.20.2021.05.03.08.58.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 May 2021 08:58:08 -0700 (PDT) From: Jason Ekstrand To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH 08/27] drm/i915: Drop getparam support for I915_CONTEXT_PARAM_ENGINES Date: Mon, 3 May 2021 10:57:29 -0500 Message-Id: <20210503155748.1961781-9-jason@jlekstrand.net> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210503155748.1961781-1-jason@jlekstrand.net> References: <20210503155748.1961781-1-jason@jlekstrand.net> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Daniel Vetter , Jason Ekstrand Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" This has never been used by any userspace except IGT and provides no real functionality beyond parroting back parameters userspace passed in as part of context creation or via setparam. If the context is in legacy mode (where you use I915_EXEC_RENDER and friends), it returns success with zero data so it's not useful for discovering what engines are in the context. It's also not a replacement for the recently removed I915_CONTEXT_CLONE_ENGINES because it doesn't return any of the balancing or bonding information. Signed-off-by: Jason Ekstrand Reviewed-by: Daniel Vetter --- drivers/gpu/drm/i915/gem/i915_gem_context.c | 77 +-------------------- 1 file changed, 1 insertion(+), 76 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c index 3f99ef5a72f57..92e55441a7621 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c @@ -1725,78 +1725,6 @@ set_engines(struct i915_gem_context *ctx, return 0; } -static int -get_engines(struct i915_gem_context *ctx, - struct drm_i915_gem_context_param *args) -{ - struct i915_context_param_engines __user *user; - struct i915_gem_engines *e; - size_t n, count, size; - bool user_engines; - int err = 0; - - e = __context_engines_await(ctx, &user_engines); - if (!e) - return -ENOENT; - - if (!user_engines) { - i915_sw_fence_complete(&e->fence); - args->size = 0; - return 0; - } - - count = e->num_engines; - - /* Be paranoid in case we have an impedance mismatch */ - if (!check_struct_size(user, engines, count, &size)) { - err = -EINVAL; - goto err_free; - } - if (overflows_type(size, args->size)) { - err = -EINVAL; - goto err_free; - } - - if (!args->size) { - args->size = size; - goto err_free; - } - - if (args->size < size) { - err = -EINVAL; - goto err_free; - } - - user = u64_to_user_ptr(args->value); - if (put_user(0, &user->extensions)) { - err = -EFAULT; - goto err_free; - } - - for (n = 0; n < count; n++) { - struct i915_engine_class_instance ci = { - .engine_class = I915_ENGINE_CLASS_INVALID, - .engine_instance = I915_ENGINE_CLASS_INVALID_NONE, - }; - - if (e->engines[n]) { - ci.engine_class = e->engines[n]->engine->uabi_class; - ci.engine_instance = e->engines[n]->engine->uabi_instance; - } - - if (copy_to_user(&user->engines[n], &ci, sizeof(ci))) { - err = -EFAULT; - goto err_free; - } - } - - args->size = size; - -err_free: - i915_sw_fence_complete(&e->fence); - return err; -} - static int set_persistence(struct i915_gem_context *ctx, const struct drm_i915_gem_context_param *args) @@ -2127,10 +2055,6 @@ int i915_gem_context_getparam_ioctl(struct drm_device *dev, void *data, ret = get_ppgtt(file_priv, ctx, args); break; - case I915_CONTEXT_PARAM_ENGINES: - ret = get_engines(ctx, args); - break; - case I915_CONTEXT_PARAM_PERSISTENCE: args->size = 0; args->value = i915_gem_context_is_persistent(ctx); @@ -2138,6 +2062,7 @@ int i915_gem_context_getparam_ioctl(struct drm_device *dev, void *data, case I915_CONTEXT_PARAM_NO_ZEROMAP: case I915_CONTEXT_PARAM_BAN_PERIOD: + case I915_CONTEXT_PARAM_ENGINES: case I915_CONTEXT_PARAM_RINGSIZE: default: ret = -EINVAL; From patchwork Mon May 3 15:57:30 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Ekstrand X-Patchwork-Id: 12236419 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1D25FC433B4 for ; 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[134.134.139.74]) by smtp.gmail.com with ESMTPSA id gf21sm9783296pjb.20.2021.05.03.08.58.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 May 2021 08:58:10 -0700 (PDT) From: Jason Ekstrand To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH 09/27] drm/i915/gem: Disallow bonding of virtual engines (v3) Date: Mon, 3 May 2021 10:57:30 -0500 Message-Id: <20210503155748.1961781-10-jason@jlekstrand.net> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210503155748.1961781-1-jason@jlekstrand.net> References: <20210503155748.1961781-1-jason@jlekstrand.net> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jason Ekstrand Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" This adds a bunch of complexity which the media driver has never actually used. The media driver does technically bond a balanced engine to another engine but the balanced engine only has one engine in the sibling set. This doesn't actually result in a virtual engine. This functionality was originally added to handle cases where we may have more than two video engines and media might want to load-balance their bonded submits by, for instance, submitting to a balanced vcs0-1 as the primary and then vcs2-3 as the secondary. However, no such hardware has shipped thus far and, if we ever want to enable such use-cases in the future, we'll use the up-and-coming parallel submit API which targets GuC submission. This makes I915_CONTEXT_ENGINES_EXT_BOND a total no-op. We leave the validation code in place in case we ever decide we want to do something interesting with the bonding information. v2 (Jason Ekstrand): - Don't delete quite as much code. v3 (Tvrtko Ursulin): - Add some history to the commit message Signed-off-by: Jason Ekstrand --- drivers/gpu/drm/i915/gem/i915_gem_context.c | 18 +- .../drm/i915/gt/intel_execlists_submission.c | 69 ------ .../drm/i915/gt/intel_execlists_submission.h | 4 - drivers/gpu/drm/i915/gt/selftest_execlists.c | 229 ------------------ 4 files changed, 6 insertions(+), 314 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c index 92e55441a7621..be42dc918ef6f 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c @@ -1553,6 +1553,12 @@ set_engines__bond(struct i915_user_extension __user *base, void *data) } virtual = set->engines->engines[idx]->engine; + if (intel_engine_is_virtual(virtual)) { + drm_dbg(&i915->drm, + "Bonding with virtual engines not allowed\n"); + return -EINVAL; + } + err = check_user_mbz(&ext->flags); if (err) return err; @@ -1593,18 +1599,6 @@ set_engines__bond(struct i915_user_extension __user *base, void *data) n, ci.engine_class, ci.engine_instance); return -EINVAL; } - - /* - * A non-virtual engine has no siblings to choose between; and - * a submit fence will always be directed to the one engine. - */ - if (intel_engine_is_virtual(virtual)) { - err = intel_virtual_engine_attach_bond(virtual, - master, - bond); - if (err) - return err; - } } return 0; diff --git a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c index 0e8c320927d15..14378b28169b7 100644 --- a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c +++ b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c @@ -181,18 +181,6 @@ struct virtual_engine { int prio; } nodes[I915_NUM_ENGINES]; - /* - * Keep track of bonded pairs -- restrictions upon on our selection - * of physical engines any particular request may be submitted to. - * If we receive a submit-fence from a master engine, we will only - * use one of sibling_mask physical engines. - */ - struct ve_bond { - const struct intel_engine_cs *master; - intel_engine_mask_t sibling_mask; - } *bonds; - unsigned int num_bonds; - /* And finally, which physical engines this virtual engine maps onto. */ unsigned int num_siblings; struct intel_engine_cs *siblings[]; @@ -3307,7 +3295,6 @@ static void rcu_virtual_context_destroy(struct work_struct *wrk) intel_breadcrumbs_free(ve->base.breadcrumbs); intel_engine_free_request_pool(&ve->base); - kfree(ve->bonds); kfree(ve); } @@ -3560,33 +3547,13 @@ static void virtual_submit_request(struct i915_request *rq) spin_unlock_irqrestore(&ve->base.active.lock, flags); } -static struct ve_bond * -virtual_find_bond(struct virtual_engine *ve, - const struct intel_engine_cs *master) -{ - int i; - - for (i = 0; i < ve->num_bonds; i++) { - if (ve->bonds[i].master == master) - return &ve->bonds[i]; - } - - return NULL; -} - static void virtual_bond_execute(struct i915_request *rq, struct dma_fence *signal) { - struct virtual_engine *ve = to_virtual_engine(rq->engine); intel_engine_mask_t allowed, exec; - struct ve_bond *bond; allowed = ~to_request(signal)->engine->mask; - bond = virtual_find_bond(ve, to_request(signal)->engine); - if (bond) - allowed &= bond->sibling_mask; - /* Restrict the bonded request to run on only the available engines */ exec = READ_ONCE(rq->execution_mask); while (!try_cmpxchg(&rq->execution_mask, &exec, exec & allowed)) @@ -3736,42 +3703,6 @@ intel_execlists_create_virtual(struct intel_engine_cs **siblings, return ERR_PTR(err); } -int intel_virtual_engine_attach_bond(struct intel_engine_cs *engine, - const struct intel_engine_cs *master, - const struct intel_engine_cs *sibling) -{ - struct virtual_engine *ve = to_virtual_engine(engine); - struct ve_bond *bond; - int n; - - /* Sanity check the sibling is part of the virtual engine */ - for (n = 0; n < ve->num_siblings; n++) - if (sibling == ve->siblings[n]) - break; - if (n == ve->num_siblings) - return -EINVAL; - - bond = virtual_find_bond(ve, master); - if (bond) { - bond->sibling_mask |= sibling->mask; - return 0; - } - - bond = krealloc(ve->bonds, - sizeof(*bond) * (ve->num_bonds + 1), - GFP_KERNEL); - if (!bond) - return -ENOMEM; - - bond[ve->num_bonds].master = master; - bond[ve->num_bonds].sibling_mask = sibling->mask; - - ve->bonds = bond; - ve->num_bonds++; - - return 0; -} - void intel_execlists_show_requests(struct intel_engine_cs *engine, struct drm_printer *m, void (*show_request)(struct drm_printer *m, diff --git a/drivers/gpu/drm/i915/gt/intel_execlists_submission.h b/drivers/gpu/drm/i915/gt/intel_execlists_submission.h index bab3d37cf3f98..ad4f3e1a0fded 100644 --- a/drivers/gpu/drm/i915/gt/intel_execlists_submission.h +++ b/drivers/gpu/drm/i915/gt/intel_execlists_submission.h @@ -36,10 +36,6 @@ struct intel_context * intel_execlists_create_virtual(struct intel_engine_cs **siblings, unsigned int count); -int intel_virtual_engine_attach_bond(struct intel_engine_cs *engine, - const struct intel_engine_cs *master, - const struct intel_engine_cs *sibling); - bool intel_engine_in_execlists_submission_mode(const struct intel_engine_cs *engine); diff --git a/drivers/gpu/drm/i915/gt/selftest_execlists.c b/drivers/gpu/drm/i915/gt/selftest_execlists.c index 01d9896dd4844..a0e75b71a3374 100644 --- a/drivers/gpu/drm/i915/gt/selftest_execlists.c +++ b/drivers/gpu/drm/i915/gt/selftest_execlists.c @@ -4311,234 +4311,6 @@ static int live_virtual_preserved(void *arg) return 0; } -static int bond_virtual_engine(struct intel_gt *gt, - unsigned int class, - struct intel_engine_cs **siblings, - unsigned int nsibling, - unsigned int flags) -#define BOND_SCHEDULE BIT(0) -{ - struct intel_engine_cs *master; - struct i915_request *rq[16]; - enum intel_engine_id id; - struct igt_spinner spin; - unsigned long n; - int err; - - /* - * A set of bonded requests is intended to be run concurrently - * across a number of engines. We use one request per-engine - * and a magic fence to schedule each of the bonded requests - * at the same time. A consequence of our current scheduler is that - * we only move requests to the HW ready queue when the request - * becomes ready, that is when all of its prerequisite fences have - * been signaled. As one of those fences is the master submit fence, - * there is a delay on all secondary fences as the HW may be - * currently busy. Equally, as all the requests are independent, - * they may have other fences that delay individual request - * submission to HW. Ergo, we do not guarantee that all requests are - * immediately submitted to HW at the same time, just that if the - * rules are abided by, they are ready at the same time as the - * first is submitted. Userspace can embed semaphores in its batch - * to ensure parallel execution of its phases as it requires. - * Though naturally it gets requested that perhaps the scheduler should - * take care of parallel execution, even across preemption events on - * different HW. (The proper answer is of course "lalalala".) - * - * With the submit-fence, we have identified three possible phases - * of synchronisation depending on the master fence: queued (not - * ready), executing, and signaled. The first two are quite simple - * and checked below. However, the signaled master fence handling is - * contentious. Currently we do not distinguish between a signaled - * fence and an expired fence, as once signaled it does not convey - * any information about the previous execution. It may even be freed - * and hence checking later it may not exist at all. Ergo we currently - * do not apply the bonding constraint for an already signaled fence, - * as our expectation is that it should not constrain the secondaries - * and is outside of the scope of the bonded request API (i.e. all - * userspace requests are meant to be running in parallel). As - * it imposes no constraint, and is effectively a no-op, we do not - * check below as normal execution flows are checked extensively above. - * - * XXX Is the degenerate handling of signaled submit fences the - * expected behaviour for userpace? - */ - - GEM_BUG_ON(nsibling >= ARRAY_SIZE(rq) - 1); - - if (igt_spinner_init(&spin, gt)) - return -ENOMEM; - - err = 0; - rq[0] = ERR_PTR(-ENOMEM); - for_each_engine(master, gt, id) { - struct i915_sw_fence fence = {}; - struct intel_context *ce; - - if (master->class == class) - continue; - - ce = intel_context_create(master); - if (IS_ERR(ce)) { - err = PTR_ERR(ce); - goto out; - } - - memset_p((void *)rq, ERR_PTR(-EINVAL), ARRAY_SIZE(rq)); - - rq[0] = igt_spinner_create_request(&spin, ce, MI_NOOP); - intel_context_put(ce); - if (IS_ERR(rq[0])) { - err = PTR_ERR(rq[0]); - goto out; - } - i915_request_get(rq[0]); - - if (flags & BOND_SCHEDULE) { - onstack_fence_init(&fence); - err = i915_sw_fence_await_sw_fence_gfp(&rq[0]->submit, - &fence, - GFP_KERNEL); - } - - i915_request_add(rq[0]); - if (err < 0) - goto out; - - if (!(flags & BOND_SCHEDULE) && - !igt_wait_for_spinner(&spin, rq[0])) { - err = -EIO; - goto out; - } - - for (n = 0; n < nsibling; n++) { - struct intel_context *ve; - - ve = intel_execlists_create_virtual(siblings, nsibling); - if (IS_ERR(ve)) { - err = PTR_ERR(ve); - onstack_fence_fini(&fence); - goto out; - } - - err = intel_virtual_engine_attach_bond(ve->engine, - master, - siblings[n]); - if (err) { - intel_context_put(ve); - onstack_fence_fini(&fence); - goto out; - } - - err = intel_context_pin(ve); - intel_context_put(ve); - if (err) { - onstack_fence_fini(&fence); - goto out; - } - - rq[n + 1] = i915_request_create(ve); - intel_context_unpin(ve); - if (IS_ERR(rq[n + 1])) { - err = PTR_ERR(rq[n + 1]); - onstack_fence_fini(&fence); - goto out; - } - i915_request_get(rq[n + 1]); - - err = i915_request_await_execution(rq[n + 1], - &rq[0]->fence, - ve->engine->bond_execute); - i915_request_add(rq[n + 1]); - if (err < 0) { - onstack_fence_fini(&fence); - goto out; - } - } - onstack_fence_fini(&fence); - intel_engine_flush_submission(master); - igt_spinner_end(&spin); - - if (i915_request_wait(rq[0], 0, HZ / 10) < 0) { - pr_err("Master request did not execute (on %s)!\n", - rq[0]->engine->name); - err = -EIO; - goto out; - } - - for (n = 0; n < nsibling; n++) { - if (i915_request_wait(rq[n + 1], 0, - MAX_SCHEDULE_TIMEOUT) < 0) { - err = -EIO; - goto out; - } - - if (rq[n + 1]->engine != siblings[n]) { - pr_err("Bonded request did not execute on target engine: expected %s, used %s; master was %s\n", - siblings[n]->name, - rq[n + 1]->engine->name, - rq[0]->engine->name); - err = -EINVAL; - goto out; - } - } - - for (n = 0; !IS_ERR(rq[n]); n++) - i915_request_put(rq[n]); - rq[0] = ERR_PTR(-ENOMEM); - } - -out: - for (n = 0; !IS_ERR(rq[n]); n++) - i915_request_put(rq[n]); - if (igt_flush_test(gt->i915)) - err = -EIO; - - igt_spinner_fini(&spin); - return err; -} - -static int live_virtual_bond(void *arg) -{ - static const struct phase { - const char *name; - unsigned int flags; - } phases[] = { - { "", 0 }, - { "schedule", BOND_SCHEDULE }, - { }, - }; - struct intel_gt *gt = arg; - struct intel_engine_cs *siblings[MAX_ENGINE_INSTANCE + 1]; - unsigned int class; - int err; - - if (intel_uc_uses_guc_submission(>->uc)) - return 0; - - for (class = 0; class <= MAX_ENGINE_CLASS; class++) { - const struct phase *p; - int nsibling; - - nsibling = select_siblings(gt, class, siblings); - if (nsibling < 2) - continue; - - for (p = phases; p->name; p++) { - err = bond_virtual_engine(gt, - class, siblings, nsibling, - p->flags); - if (err) { - pr_err("%s(%s): failed class=%d, nsibling=%d, err=%d\n", - __func__, p->name, class, nsibling, err); - return err; - } - } - } - - return 0; -} - static int reset_virtual_engine(struct intel_gt *gt, struct intel_engine_cs **siblings, unsigned int nsibling) @@ -4712,7 +4484,6 @@ int intel_execlists_live_selftests(struct drm_i915_private *i915) SUBTEST(live_virtual_mask), SUBTEST(live_virtual_preserved), SUBTEST(live_virtual_slice), - SUBTEST(live_virtual_bond), SUBTEST(live_virtual_reset), }; 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[134.134.139.74]) by smtp.gmail.com with ESMTPSA id gf21sm9783296pjb.20.2021.05.03.08.58.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 May 2021 08:58:11 -0700 (PDT) From: Jason Ekstrand To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH 10/27] drm/i915/gem: Remove engine auto-magic with FENCE_SUBMIT Date: Mon, 3 May 2021 10:57:31 -0500 Message-Id: <20210503155748.1961781-11-jason@jlekstrand.net> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210503155748.1961781-1-jason@jlekstrand.net> References: <20210503155748.1961781-1-jason@jlekstrand.net> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jason Ekstrand Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Even though FENCE_SUBMIT is only documented to wait until the request in the in-fence starts instead of waiting until it completes, it has a bit more magic than that. If FENCE_SUBMIT is used to submit something to a balanced engine, we would wait to assign engines until the primary request was ready to start and then attempt to assign it to a different engine than the primary. There is an IGT test which exercises this by submitting a primary batch to a specific VCS and then using FENCE_SUBMIT to submit a secondary which can run on any VCS and have i915 figure out which VCS to run it on such that they can run in parallel. However, this functionality has never been used in the real world. The media driver (the only user of FENCE_SUBMIT) always picks exactly two physical engines to bond and never asks us to pick which to use. Signed-off-by: Jason Ekstrand --- drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c | 2 +- drivers/gpu/drm/i915/gt/intel_engine_types.h | 7 ------- .../drm/i915/gt/intel_execlists_submission.c | 17 ----------------- 3 files changed, 1 insertion(+), 25 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c index d640bba6ad9ab..efb2fa3522a42 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c @@ -3474,7 +3474,7 @@ i915_gem_do_execbuffer(struct drm_device *dev, if (args->flags & I915_EXEC_FENCE_SUBMIT) err = i915_request_await_execution(eb.request, in_fence, - eb.engine->bond_execute); + NULL); else err = i915_request_await_dma_fence(eb.request, in_fence); diff --git a/drivers/gpu/drm/i915/gt/intel_engine_types.h b/drivers/gpu/drm/i915/gt/intel_engine_types.h index 883bafc449024..68cfe5080325c 100644 --- a/drivers/gpu/drm/i915/gt/intel_engine_types.h +++ b/drivers/gpu/drm/i915/gt/intel_engine_types.h @@ -446,13 +446,6 @@ struct intel_engine_cs { */ void (*submit_request)(struct i915_request *rq); - /* - * Called on signaling of a SUBMIT_FENCE, passing along the signaling - * request down to the bonded pairs. - */ - void (*bond_execute)(struct i915_request *rq, - struct dma_fence *signal); - /* * Call when the priority on a request has changed and it and its * dependencies may need rescheduling. Note the request itself may diff --git a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c index 14378b28169b7..635d6d2494d26 100644 --- a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c +++ b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c @@ -3547,22 +3547,6 @@ static void virtual_submit_request(struct i915_request *rq) spin_unlock_irqrestore(&ve->base.active.lock, flags); } -static void -virtual_bond_execute(struct i915_request *rq, struct dma_fence *signal) -{ - intel_engine_mask_t allowed, exec; - - allowed = ~to_request(signal)->engine->mask; - - /* Restrict the bonded request to run on only the available engines */ - exec = READ_ONCE(rq->execution_mask); - while (!try_cmpxchg(&rq->execution_mask, &exec, exec & allowed)) - ; - - /* Prevent the master from being re-run on the bonded engines */ - to_request(signal)->execution_mask &= ~allowed; -} - struct intel_context * intel_execlists_create_virtual(struct intel_engine_cs **siblings, unsigned int count) @@ -3616,7 +3600,6 @@ intel_execlists_create_virtual(struct intel_engine_cs **siblings, ve->base.schedule = i915_schedule; ve->base.submit_request = virtual_submit_request; - ve->base.bond_execute = virtual_bond_execute; INIT_LIST_HEAD(virtual_queue(ve)); ve->base.execlists.queue_priority_hint = INT_MIN; From patchwork Mon May 3 15:57:32 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Ekstrand X-Patchwork-Id: 12236423 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 04F43C43460 for ; Mon, 3 May 2021 15:58:31 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 8C218610C8 for ; Mon, 3 May 2021 15:58:30 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8C218610C8 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=jlekstrand.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 056C889623; Mon, 3 May 2021 15:58:15 +0000 (UTC) Received: from mail-pg1-x531.google.com (mail-pg1-x531.google.com [IPv6:2607:f8b0:4864:20::531]) by gabe.freedesktop.org (Postfix) with ESMTPS id 687226E8E8 for ; Mon, 3 May 2021 15:58:14 +0000 (UTC) Received: by mail-pg1-x531.google.com with SMTP id p12so3929596pgj.10 for ; Mon, 03 May 2021 08:58:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=jlekstrand-net.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=uYabUSPE0YRQY2b5Ue+1QZI32n9lhIDHptBnWE+tKCo=; b=C23Tiy8W+9oXTZpTv6UPVBY9VxBF0U9wCPppmrI76vmdk2X7JSRYW4tvXntUyLIok9 46M6OJ+tsY9Af0scujswx4Wnx3YtiA9bWc7HIuQZc0sxsWAtSCW7FP87eZklA4RpvrSf zNnRfh73KAVbhYAJ8rAHsHFG6FwzjigBmxBv5DQ+F2asA2JhZLjK8DKFuq2g64qx++Lx Bq+u5b+MVXDuN+NRHRbN75IOuMOFto7PHGwBwvXmh55629AllxXjygl+vOfjP1xHaLwA Ggyby+kMBxQMIhcmMm910M0ipNHta4ii0OaaIQ/I4NxkvEGMKrFIgmCWLPhlFIj9oOap aAxg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=uYabUSPE0YRQY2b5Ue+1QZI32n9lhIDHptBnWE+tKCo=; b=Vn2BsxTrLLFFPvvFRNQ55X3Zd4WlKW9/5a3FkUbnk6ho1z2WV+H9HUHgwYGptMY4Hm JBmiMbLXnIQTLWnPZZYCSC9GcD7aYu+PGteM47WgsQ+DM2a2AcjPZQUlVC9LNFQBtWdJ z+hi4ipX7TxEPcIMIK/LwokY9Tu3F9wezuwtI/kQUtBkFsjiPKfNIMSZMW6e6c/7rZKY mYosl3bYeAnOtxVuGmGPED79P1Uzd6UWEFFA3NUoHqynsOtQ4QHEUxQ9GY8Q6qcyelJ3 kXOc7Vzm6Wc/HZ3o5y8D6SJ/nc6MpELIuymzk22sKpW1BJ9gJjddIWCTydp0Fdu6VteR Ir+g== X-Gm-Message-State: AOAM530qTNZel5uuqVqhY2t3VRJg6G+UfPR62CCKHK0mb1SbKV8JTXq6 o3OAl1JRN+xftdmDx54nbVp9hg== X-Google-Smtp-Source: ABdhPJzRd/krqmd9dhhGvuGQso5RoQENfMwyoMKaCpZmenKWVODkF0kHaj9Ctv9ZFud49b6R0WPGNQ== X-Received: by 2002:a62:ed0b:0:b029:25c:9ea2:abea with SMTP id u11-20020a62ed0b0000b029025c9ea2abeamr19646830pfh.46.1620057493887; Mon, 03 May 2021 08:58:13 -0700 (PDT) Received: from omlet.com (jfdmzpr05-ext.jf.intel.com. [134.134.139.74]) by smtp.gmail.com with ESMTPSA id gf21sm9783296pjb.20.2021.05.03.08.58.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 May 2021 08:58:13 -0700 (PDT) From: Jason Ekstrand To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH 11/27] drm/i915/request: Remove the hook from await_execution Date: Mon, 3 May 2021 10:57:32 -0500 Message-Id: <20210503155748.1961781-12-jason@jlekstrand.net> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210503155748.1961781-1-jason@jlekstrand.net> References: <20210503155748.1961781-1-jason@jlekstrand.net> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jason Ekstrand Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" This was only ever used for FENCE_SUBMIT automatic engine selection which was removed in the previous commit. Signed-off-by: Jason Ekstrand Reviewed-by: Daniel Vetter --- .../gpu/drm/i915/gem/i915_gem_execbuffer.c | 3 +- drivers/gpu/drm/i915/i915_request.c | 42 ++++--------------- drivers/gpu/drm/i915/i915_request.h | 4 +- 3 files changed, 9 insertions(+), 40 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c index efb2fa3522a42..7024adcd5cf15 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c @@ -3473,8 +3473,7 @@ i915_gem_do_execbuffer(struct drm_device *dev, if (in_fence) { if (args->flags & I915_EXEC_FENCE_SUBMIT) err = i915_request_await_execution(eb.request, - in_fence, - NULL); + in_fence); else err = i915_request_await_dma_fence(eb.request, in_fence); diff --git a/drivers/gpu/drm/i915/i915_request.c b/drivers/gpu/drm/i915/i915_request.c index bec9c3652188b..7e00218b8c105 100644 --- a/drivers/gpu/drm/i915/i915_request.c +++ b/drivers/gpu/drm/i915/i915_request.c @@ -49,7 +49,6 @@ struct execute_cb { struct irq_work work; struct i915_sw_fence *fence; - void (*hook)(struct i915_request *rq, struct dma_fence *signal); struct i915_request *signal; }; @@ -180,17 +179,6 @@ static void irq_execute_cb(struct irq_work *wrk) kmem_cache_free(global.slab_execute_cbs, cb); } -static void irq_execute_cb_hook(struct irq_work *wrk) -{ - struct execute_cb *cb = container_of(wrk, typeof(*cb), work); - - cb->hook(container_of(cb->fence, struct i915_request, submit), - &cb->signal->fence); - i915_request_put(cb->signal); - - irq_execute_cb(wrk); -} - static __always_inline void __notify_execute_cb(struct i915_request *rq, bool (*fn)(struct irq_work *wrk)) { @@ -517,17 +505,12 @@ static bool __request_in_flight(const struct i915_request *signal) static int __await_execution(struct i915_request *rq, struct i915_request *signal, - void (*hook)(struct i915_request *rq, - struct dma_fence *signal), gfp_t gfp) { struct execute_cb *cb; - if (i915_request_is_active(signal)) { - if (hook) - hook(rq, &signal->fence); + if (i915_request_is_active(signal)) return 0; - } cb = kmem_cache_alloc(global.slab_execute_cbs, gfp); if (!cb) @@ -537,12 +520,6 @@ __await_execution(struct i915_request *rq, i915_sw_fence_await(cb->fence); init_irq_work(&cb->work, irq_execute_cb); - if (hook) { - cb->hook = hook; - cb->signal = i915_request_get(signal); - cb->work.func = irq_execute_cb_hook; - } - /* * Register the callback first, then see if the signaler is already * active. This ensures that if we race with the @@ -1253,7 +1230,7 @@ emit_semaphore_wait(struct i915_request *to, goto await_fence; /* Only submit our spinner after the signaler is running! */ - if (__await_execution(to, from, NULL, gfp)) + if (__await_execution(to, from, gfp)) goto await_fence; if (__emit_semaphore_wait(to, from, from->fence.seqno)) @@ -1284,16 +1261,14 @@ static int intel_timeline_sync_set_start(struct intel_timeline *tl, static int __i915_request_await_execution(struct i915_request *to, - struct i915_request *from, - void (*hook)(struct i915_request *rq, - struct dma_fence *signal)) + struct i915_request *from) { int err; GEM_BUG_ON(intel_context_is_barrier(from->context)); /* Submit both requests at the same time */ - err = __await_execution(to, from, hook, I915_FENCE_GFP); + err = __await_execution(to, from, I915_FENCE_GFP); if (err) return err; @@ -1406,9 +1381,7 @@ i915_request_await_external(struct i915_request *rq, struct dma_fence *fence) int i915_request_await_execution(struct i915_request *rq, - struct dma_fence *fence, - void (*hook)(struct i915_request *rq, - struct dma_fence *signal)) + struct dma_fence *fence) { struct dma_fence **child = &fence; unsigned int nchild = 1; @@ -1441,8 +1414,7 @@ i915_request_await_execution(struct i915_request *rq, if (dma_fence_is_i915(fence)) ret = __i915_request_await_execution(rq, - to_request(fence), - hook); + to_request(fence)); else ret = i915_request_await_external(rq, fence); if (ret < 0) @@ -1468,7 +1440,7 @@ await_request_submit(struct i915_request *to, struct i915_request *from) &from->submit, I915_FENCE_GFP); else - return __i915_request_await_execution(to, from, NULL); + return __i915_request_await_execution(to, from); } static int diff --git a/drivers/gpu/drm/i915/i915_request.h b/drivers/gpu/drm/i915/i915_request.h index 270f6cd37650c..63b087a7f5707 100644 --- a/drivers/gpu/drm/i915/i915_request.h +++ b/drivers/gpu/drm/i915/i915_request.h @@ -352,9 +352,7 @@ int i915_request_await_object(struct i915_request *to, int i915_request_await_dma_fence(struct i915_request *rq, struct dma_fence *fence); int i915_request_await_execution(struct i915_request *rq, - struct dma_fence *fence, - void (*hook)(struct i915_request *rq, - struct dma_fence *signal)); + struct dma_fence *fence); void i915_request_add(struct i915_request *rq); From patchwork Mon May 3 15:57:33 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Ekstrand X-Patchwork-Id: 12236425 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AB25CC433B4 for ; Mon, 3 May 2021 15:58:33 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 58C4C61164 for ; 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[134.134.139.74]) by smtp.gmail.com with ESMTPSA id gf21sm9783296pjb.20.2021.05.03.08.58.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 May 2021 08:58:14 -0700 (PDT) From: Jason Ekstrand To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH 12/27] drm/i915/gem: Disallow creating contexts with too many engines Date: Mon, 3 May 2021 10:57:33 -0500 Message-Id: <20210503155748.1961781-13-jason@jlekstrand.net> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210503155748.1961781-1-jason@jlekstrand.net> References: <20210503155748.1961781-1-jason@jlekstrand.net> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Daniel Vetter , Jason Ekstrand Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" There's no sense in allowing userspace to create more engines than it can possibly access via execbuf. Signed-off-by: Jason Ekstrand Reviewed-by: Daniel Vetter --- drivers/gpu/drm/i915/gem/i915_gem_context.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c index be42dc918ef6f..8e254d83d65f2 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c @@ -1640,11 +1640,11 @@ set_engines(struct i915_gem_context *ctx, return -EINVAL; } - /* - * Note that I915_EXEC_RING_MASK limits execbuf to only using the - * first 64 engines defined here. - */ num_engines = (args->size - sizeof(*user)) / sizeof(*user->engines); + /* RING_MASK has no shift so we can use it directly here */ + if (num_engines > I915_EXEC_RING_MASK + 1) + return -EINVAL; + set.engines = alloc_engines(num_engines); if (!set.engines) return -ENOMEM; From patchwork Mon May 3 15:57:34 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Ekstrand X-Patchwork-Id: 12236427 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 75379C433B4 for ; Mon, 3 May 2021 15:58:35 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 20827610C8 for ; Mon, 3 May 2021 15:58:35 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 20827610C8 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=jlekstrand.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 3EB306E8E8; Mon, 3 May 2021 15:58:19 +0000 (UTC) Received: from mail-pl1-x62f.google.com (mail-pl1-x62f.google.com [IPv6:2607:f8b0:4864:20::62f]) by gabe.freedesktop.org (Postfix) with ESMTPS id D49D66E8F4 for ; Mon, 3 May 2021 15:58:17 +0000 (UTC) Received: by mail-pl1-x62f.google.com with SMTP id t4so2278594plc.6 for ; Mon, 03 May 2021 08:58:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=jlekstrand-net.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=fsllfSQGOYUIVLhl3Co0QJ3iUTIL9mD5TCD1jQqxlak=; b=TI4SKKXpotNRyp5HMBe7j9G8rKE0U+1J1X8N6CUtQXFNBXEaPjrPi6ld7WxC5HZbzK VvPaRsXLlQ9FJ/qlXgZ/FIXRzucyXI4yoJVfgkwaubXyWQfQx7aNi8Da7rYk4ySwlkIF /oRYl0e7NhzUa4aaasAnQN/cFrkalZejGFOoeH7SFZjCN85EBhEQGoo3GCrctNxdTjI6 29GO7qsDjzJH7DpvE4sZvYUZOL6B1fRIM3eC4LzERyTTsCqd/IctMmwWYNBiWtnwk61Y fvYm0NiwZnstbI+F6Z4zSdrxMFuoxLjeK3L/1cSRD8exR5/Cm9oOy1U3AIskNtpMP+u9 IKWw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=fsllfSQGOYUIVLhl3Co0QJ3iUTIL9mD5TCD1jQqxlak=; b=HFpp0ASeXr0Zf7nw/Z/V3uCDDKbpS662qFJpTbLd+QMfm7PpjqzcPgtU02t8TwJDGx GzahpK4SffA9pNhYWwxed3XA3Pe4en32rgdQDZmIzHZxpE/UJIdYbXIVFhxdiWl3NmIh owlnUAnWi5280bYjS1MT8zuwqDCksXvAPnTztwLyh6AE1JouCBUQNMnLcPm0hhmFJcMm h76eF0Iw4HxCNg4itoofYFtYZqXMp7iFWPsLFZRTr3c7iFX/uDtnjM2zXaHMrsCAP3hX XOYgOz3QwP8ya/oOzyX3kbkII0+a/Lq8jJuEQqyIf4zA/eoGlCpaxdXVr+fk/qvK0mvw TK5A== X-Gm-Message-State: AOAM530fAbqrGv6n/2UUChddqlweIbizktebHBYO3bED4MPR+PE6beLc x5ZPHNwnIk+RKnkfAcCgH9qpJg== X-Google-Smtp-Source: ABdhPJwdujVadQWeYf+4f1AOGcoPLCqkbkpmgKX948mlWxnOMj2tq8yWEphQufRJxtflidJWgKNACw== X-Received: by 2002:a17:903:248e:b029:ec:b399:7d75 with SMTP id p14-20020a170903248eb02900ecb3997d75mr20953026plw.35.1620057497413; Mon, 03 May 2021 08:58:17 -0700 (PDT) Received: from omlet.com (jfdmzpr05-ext.jf.intel.com. [134.134.139.74]) by smtp.gmail.com with ESMTPSA id gf21sm9783296pjb.20.2021.05.03.08.58.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 May 2021 08:58:16 -0700 (PDT) From: Jason Ekstrand To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH 13/27] drm/i915: Stop manually RCU banging in reset_stats_ioctl (v2) Date: Mon, 3 May 2021 10:57:34 -0500 Message-Id: <20210503155748.1961781-14-jason@jlekstrand.net> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210503155748.1961781-1-jason@jlekstrand.net> References: <20210503155748.1961781-1-jason@jlekstrand.net> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Daniel Vetter , Jason Ekstrand Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" As far as I can tell, the only real reason for this is to avoid taking a reference to the i915_gem_context. The cost of those two atomics probably pales in comparison to the cost of the ioctl itself so we're really not buying ourselves anything here. We're about to make context lookup a tiny bit more complicated, so let's get rid of the one hand- rolled case. Some usermode drivers such as our Vulkan driver call GET_RESET_STATS on every execbuf so the perf here could theoretically be an issue. If this ever does become a performance issue for any such userspace drivers, they can use set CONTEXT_PARAM_RECOVERABLE to false and look for -EIO coming from execbuf to check for hangs instead. v2 (Daniel Vetter): - Add a comment in the commit message about recoverable contexts Signed-off-by: Jason Ekstrand Reviewed-by: Daniel Vetter --- drivers/gpu/drm/i915/gem/i915_gem_context.c | 13 ++++--------- drivers/gpu/drm/i915/i915_drv.h | 8 +------- 2 files changed, 5 insertions(+), 16 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c index 8e254d83d65f2..c073d5939482b 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c @@ -2091,16 +2091,13 @@ int i915_gem_context_reset_stats_ioctl(struct drm_device *dev, struct drm_i915_private *i915 = to_i915(dev); struct drm_i915_reset_stats *args = data; struct i915_gem_context *ctx; - int ret; if (args->flags || args->pad) return -EINVAL; - ret = -ENOENT; - rcu_read_lock(); - ctx = __i915_gem_context_lookup_rcu(file->driver_priv, args->ctx_id); + ctx = i915_gem_context_lookup(file->driver_priv, args->ctx_id); if (!ctx) - goto out; + return -ENOENT; /* * We opt for unserialised reads here. This may result in tearing @@ -2117,10 +2114,8 @@ int i915_gem_context_reset_stats_ioctl(struct drm_device *dev, args->batch_active = atomic_read(&ctx->guilty_count); args->batch_pending = atomic_read(&ctx->active_count); - ret = 0; -out: - rcu_read_unlock(); - return ret; + i915_gem_context_put(ctx); + return 0; } /* GEM context-engines iterator: for_each_gem_engine() */ diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 0b44333eb7033..8571c5c1509a7 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -1840,19 +1840,13 @@ struct drm_gem_object *i915_gem_prime_import(struct drm_device *dev, struct dma_buf *i915_gem_prime_export(struct drm_gem_object *gem_obj, int flags); -static inline struct i915_gem_context * -__i915_gem_context_lookup_rcu(struct drm_i915_file_private *file_priv, u32 id) -{ - return xa_load(&file_priv->context_xa, id); -} - static inline struct i915_gem_context * i915_gem_context_lookup(struct drm_i915_file_private *file_priv, u32 id) { struct i915_gem_context *ctx; rcu_read_lock(); - ctx = __i915_gem_context_lookup_rcu(file_priv, id); + ctx = xa_load(&file_priv->context_xa, id); if (ctx && !kref_get_unless_zero(&ctx->ref)) ctx = NULL; rcu_read_unlock(); From patchwork Mon May 3 15:57:35 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Ekstrand X-Patchwork-Id: 12236429 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C08A0C433B4 for ; Mon, 3 May 2021 15:58:37 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 6B170610C8 for ; Mon, 3 May 2021 15:58:37 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6B170610C8 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=jlekstrand.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id E661A6E8F9; Mon, 3 May 2021 15:58:20 +0000 (UTC) Received: from mail-pg1-x52a.google.com (mail-pg1-x52a.google.com [IPv6:2607:f8b0:4864:20::52a]) by gabe.freedesktop.org (Postfix) with ESMTPS id 9E7B96E8F5 for ; Mon, 3 May 2021 15:58:19 +0000 (UTC) Received: by mail-pg1-x52a.google.com with SMTP id y30so3938523pgl.7 for ; Mon, 03 May 2021 08:58:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=jlekstrand-net.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=Rxa+dxuuKkWcn1ApSBM6WPTFN6yU9A6RHDJyeGGj8Pc=; b=qew5SD7Qjs1UfxH5CEXy4ZL4DRw/Ru7fBRXjEcNlw0zdJHnu1Hy+8P0YiYRlBN8iY+ 9hGYKy/jLhOdnXuGl9HqRGr2AYIpj9EbrYlMXRYZTqrIjOmxb+bc57TOOm6LRMMwhF1m vg5Wk5GfKzx6nsns3FDcPQXFVOsEDHxJRvd95701Zk9CvZ35WcRcKHdT30va8jBVAIfo TTej3rcpMeOnkpnr4Lrjl9Qmkb3GGb4kf5L1k5z3/KCry8RxeiZNXjlOa6/ZUbTQ5VRb 1FEflLo01oRcrctA8W2Yl83c66UX41FWgrcgRdICZtxwotr7dJ/zIWljH9E5OYfKFazg qk/A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=Rxa+dxuuKkWcn1ApSBM6WPTFN6yU9A6RHDJyeGGj8Pc=; b=o8qDyKn52u/+cgEDgA4tsGb+INzLx2ilxpXSqsAmLQxwXbk7ds4sNYTWVcscYT42D2 2lwnGPtuDXapXeejw2DwqtjE1v22zj/WLjdZjj9YmopMK8GPBxdqZN9oaVsKBwBtQ9OY le485UY4GPUdp83EKWx9XnR/KGkPL3Xhh6jBaPKdzi9KD4pGdpsMi7pJqwYQZ8vprJtk R1ZsbN7DMZCtvFnKFLsIJzjyMV+yNRn5XjL/sEn9B2MbZxdTjLLDWHipl3KICmdxWqAx di9zZKbIGY9lEE/2XUT5wbmfe0IQ3RTXAhulgv5doFYVDyoNDKrLTtOeUzFsZOTkx9ls ltzw== X-Gm-Message-State: AOAM531pj+en8PGIIBKZLxLk7QuQOCdNuKGgyp2LuvpnsAcjrBcxH2NW knnry05+s6x6OWSb8NxF7mgS1A== X-Google-Smtp-Source: ABdhPJzCvt+5y7vT1gKaqIr03hZK8tmONSqseLqlHnEh8Ae6lgD9tHvCpfLtmgnEU/eLUsigyDv6mw== X-Received: by 2002:a62:1ec2:0:b029:275:9866:be33 with SMTP id e185-20020a621ec20000b02902759866be33mr19421555pfe.15.1620057499166; Mon, 03 May 2021 08:58:19 -0700 (PDT) Received: from omlet.com (jfdmzpr05-ext.jf.intel.com. [134.134.139.74]) by smtp.gmail.com with ESMTPSA id gf21sm9783296pjb.20.2021.05.03.08.58.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 May 2021 08:58:18 -0700 (PDT) From: Jason Ekstrand To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH 14/27] drm/i915/gem: Add a separate validate_priority helper Date: Mon, 3 May 2021 10:57:35 -0500 Message-Id: <20210503155748.1961781-15-jason@jlekstrand.net> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210503155748.1961781-1-jason@jlekstrand.net> References: <20210503155748.1961781-1-jason@jlekstrand.net> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Daniel Vetter , Jason Ekstrand Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" With the proto-context stuff added later in this series, we end up having to duplicate set_priority. This lets us avoid duplicating the validation logic. Signed-off-by: Jason Ekstrand Reviewed-by: Daniel Vetter --- drivers/gpu/drm/i915/gem/i915_gem_context.c | 42 +++++++++++++-------- 1 file changed, 27 insertions(+), 15 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c index c073d5939482b..4835991898ac9 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c @@ -169,6 +169,28 @@ lookup_user_engine(struct i915_gem_context *ctx, return i915_gem_context_get_engine(ctx, idx); } +static int validate_priority(struct drm_i915_private *i915, + const struct drm_i915_gem_context_param *args) +{ + s64 priority = args->value; + + if (args->size) + return -EINVAL; + + if (!(i915->caps.scheduler & I915_SCHEDULER_CAP_PRIORITY)) + return -ENODEV; + + if (priority > I915_CONTEXT_MAX_USER_PRIORITY || + priority < I915_CONTEXT_MIN_USER_PRIORITY) + return -EINVAL; + + if (priority > I915_CONTEXT_DEFAULT_PRIORITY && + !capable(CAP_SYS_NICE)) + return -EPERM; + + return 0; +} + static struct i915_address_space * context_get_vm_rcu(struct i915_gem_context *ctx) { @@ -1745,23 +1767,13 @@ static void __apply_priority(struct intel_context *ce, void *arg) static int set_priority(struct i915_gem_context *ctx, const struct drm_i915_gem_context_param *args) { - s64 priority = args->value; - - if (args->size) - return -EINVAL; - - if (!(ctx->i915->caps.scheduler & I915_SCHEDULER_CAP_PRIORITY)) - return -ENODEV; - - if (priority > I915_CONTEXT_MAX_USER_PRIORITY || - priority < I915_CONTEXT_MIN_USER_PRIORITY) - return -EINVAL; + int err; - if (priority > I915_CONTEXT_DEFAULT_PRIORITY && - !capable(CAP_SYS_NICE)) - return -EPERM; + err = validate_priority(ctx->i915, args); + if (err) + return err; - ctx->sched.priority = priority; + ctx->sched.priority = args->value; context_apply_all(ctx, __apply_priority, ctx); return 0; From patchwork Mon May 3 15:57:36 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Ekstrand X-Patchwork-Id: 12236431 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4145DC433B4 for ; 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[134.134.139.74]) by smtp.gmail.com with ESMTPSA id gf21sm9783296pjb.20.2021.05.03.08.58.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 May 2021 08:58:20 -0700 (PDT) From: Jason Ekstrand To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH 15/27] drm/i915: Add gem/i915_gem_context.h to the docs Date: Mon, 3 May 2021 10:57:36 -0500 Message-Id: <20210503155748.1961781-16-jason@jlekstrand.net> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210503155748.1961781-1-jason@jlekstrand.net> References: <20210503155748.1961781-1-jason@jlekstrand.net> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jason Ekstrand Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" In order to prevent kernel doc warnings, also fill out docs for any missing fields and fix those that forgot the "@". Signed-off-by: Jason Ekstrand Reviewed-by: Daniel Vetter --- Documentation/gpu/i915.rst | 2 + .../gpu/drm/i915/gem/i915_gem_context_types.h | 43 ++++++++++++++++--- 2 files changed, 38 insertions(+), 7 deletions(-) diff --git a/Documentation/gpu/i915.rst b/Documentation/gpu/i915.rst index 486c720f38907..0529e5183982e 100644 --- a/Documentation/gpu/i915.rst +++ b/Documentation/gpu/i915.rst @@ -422,6 +422,8 @@ Batchbuffer Parsing User Batchbuffer Execution -------------------------- +.. kernel-doc:: drivers/gpu/drm/i915/gem/i915_gem_context_types.h + .. kernel-doc:: drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c :doc: User command execution diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context_types.h b/drivers/gpu/drm/i915/gem/i915_gem_context_types.h index df76767f0c41b..5f0673a2129f9 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context_types.h +++ b/drivers/gpu/drm/i915/gem/i915_gem_context_types.h @@ -30,19 +30,39 @@ struct i915_address_space; struct intel_timeline; struct intel_ring; +/** + * struct i915_gem_engines - A set of engines + */ struct i915_gem_engines { union { + /** @link: Link in i915_gem_context::stale::engines */ struct list_head link; + + /** @rcu: RCU to use when freeing */ struct rcu_head rcu; }; + + /** @fence: Fence used for delayed destruction of engines */ struct i915_sw_fence fence; + + /** @ctx: i915_gem_context backpointer */ struct i915_gem_context *ctx; + + /** @num_engines: Number of engines in this set */ unsigned int num_engines; + + /** @engines: Array of engines */ struct intel_context *engines[]; }; +/** + * struct i915_gem_engines_iter - Iterator for an i915_gem_engines set + */ struct i915_gem_engines_iter { + /** @idx: Index into i915_gem_engines::engines */ unsigned int idx; + + /** @engines: Engine set being iterated */ const struct i915_gem_engines *engines; }; @@ -53,10 +73,10 @@ struct i915_gem_engines_iter { * logical hardware state for a particular client. */ struct i915_gem_context { - /** i915: i915 device backpointer */ + /** @i915: i915 device backpointer */ struct drm_i915_private *i915; - /** file_priv: owning file descriptor */ + /** @file_priv: owning file descriptor */ struct drm_i915_file_private *file_priv; /** @@ -81,7 +101,9 @@ struct i915_gem_context { * CONTEXT_USER_ENGINES flag is set). */ struct i915_gem_engines __rcu *engines; - struct mutex engines_mutex; /* guards writes to engines */ + + /** @engines_mutex: guards writes to engines */ + struct mutex engines_mutex; /** * @syncobj: Shared timeline syncobj @@ -118,7 +140,7 @@ struct i915_gem_context { */ struct pid *pid; - /** link: place with &drm_i915_private.context_list */ + /** @link: place with &drm_i915_private.context_list */ struct list_head link; /** @@ -153,11 +175,13 @@ struct i915_gem_context { #define CONTEXT_CLOSED 0 #define CONTEXT_USER_ENGINES 1 + /** @mutex: guards everything that isn't engines or handles_vma */ struct mutex mutex; + /** @sched: scheduler parameters */ struct i915_sched_attr sched; - /** guilty_count: How many times this context has caused a GPU hang. */ + /** @guilty_count: How many times this context has caused a GPU hang. */ atomic_t guilty_count; /** * @active_count: How many times this context was active during a GPU @@ -171,15 +195,17 @@ struct i915_gem_context { unsigned long hang_timestamp[2]; #define CONTEXT_FAST_HANG_JIFFIES (120 * HZ) /* 3 hangs within 120s? Banned! */ - /** remap_slice: Bitmask of cache lines that need remapping */ + /** @remap_slice: Bitmask of cache lines that need remapping */ u8 remap_slice; /** - * handles_vma: rbtree to look up our context specific obj/vma for + * @handles_vma: rbtree to look up our context specific obj/vma for * the user handle. (user handles are per fd, but the binding is * per vm, which may be one per context or shared with the global GTT) */ struct radix_tree_root handles_vma; + + /** @lut_mutex: Locks handles_vma */ struct mutex lut_mutex; /** @@ -191,8 +217,11 @@ struct i915_gem_context { */ char name[TASK_COMM_LEN + 8]; + /** @stale: tracks stale engines to be destroyed */ struct { + /** @lock: guards engines */ spinlock_t lock; + /** @engines: list of stale engines */ struct list_head engines; } stale; }; From patchwork Mon May 3 15:57:37 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Ekstrand X-Patchwork-Id: 12236433 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7894CC433B4 for ; Mon, 3 May 2021 15:58:43 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 1C5CE61164 for ; Mon, 3 May 2021 15:58:43 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1C5CE61164 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=jlekstrand.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6DC1F6E8FD; Mon, 3 May 2021 15:58:24 +0000 (UTC) Received: from mail-pj1-x1034.google.com (mail-pj1-x1034.google.com [IPv6:2607:f8b0:4864:20::1034]) by gabe.freedesktop.org (Postfix) with ESMTPS id 095346E8FD for ; Mon, 3 May 2021 15:58:22 +0000 (UTC) Received: by mail-pj1-x1034.google.com with SMTP id f2-20020a17090a4a82b02900c67bf8dc69so6020771pjh.1 for ; Mon, 03 May 2021 08:58:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=jlekstrand-net.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=vYgbs6ZINBGkqI+YSk2DgRHrPGVm1V8iie+3IDSyHpU=; b=ybDFA5QKCzcXLsQVzGpT6InxMvElwEOBsruoJ5t51XlpUNPf6exMcTtubStCNf9SWg J85LBAIQdr1Z133GHR1Zp5BgYLyB/CQrFi3+0Nyil9dvBq8r0HOHuUTtlIgKbJBhwh0t LTDsNk4c0aQ6DP49fOjdMwVwlzBrgIGUrGuheinlNIyYS08gPSQDYdBBUAnveFn0DEYS YRTIZWceUQWhRdEfh+PojBw9mQ2574ppYDhnoFghVTPvMB3O7PO/9Z5EYudc5AZMuuhO hDSP1pRQblgay6Hsv9z4TkrUNhEYPAZkX5bIGCLJ0/EjLIGCYhqoru1P+WvwvS2z8CDl 18bA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=vYgbs6ZINBGkqI+YSk2DgRHrPGVm1V8iie+3IDSyHpU=; b=aa9w8EGwYvdQjMZEpFF4ROo3l6N1ocjl+Qnx/rZvAGjoJMA9CCIkJqrPk9K3xDm7zM LUtx336MOfIiWvpdTKL4AVvtE1g0HcmcrBZ7cfwXx7TlBfJW94rSd/p2VVpaTMYAG+8V 0i+PSJs2XYSl3xMAlx0Vn7p8LgRibdRQSDbMPBZpK4XjDuo3B+aaUKFNafuGEwlCWEVN 1fLNAh18ORhC/AyvUWiYOny6hyWBwW4Er41R8l/Ja5xyGbIw3TMOLfU0zQTvx5EJY4eK STBbN1P/S3Aoa3JmI4bAmygt9cNP5Sq58d96SWqI7aKFhLta1MBCjILOqvnF8g4YXUZF smPA== X-Gm-Message-State: AOAM530fiWiCndPheKXfkmEdBIgP/W7MTw6UWMrSPhEwrEUEk3qwO8cZ B5pCkzL3jVDSKXCpHOwaJ7uXow== X-Google-Smtp-Source: ABdhPJxg2oq+J8elp3T2YT/mcCg1drGxY2H5a33I7iJ/At2KvZwp2NRvbE15d4ml88yqZtqbPGrxGA== X-Received: by 2002:a17:90b:3684:: with SMTP id mj4mr32679845pjb.50.1620057502449; Mon, 03 May 2021 08:58:22 -0700 (PDT) Received: from omlet.com (jfdmzpr05-ext.jf.intel.com. [134.134.139.74]) by smtp.gmail.com with ESMTPSA id gf21sm9783296pjb.20.2021.05.03.08.58.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 May 2021 08:58:21 -0700 (PDT) From: Jason Ekstrand To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH 16/27] drm/i915/gem: Add an intermediate proto_context struct Date: Mon, 3 May 2021 10:57:37 -0500 Message-Id: <20210503155748.1961781-17-jason@jlekstrand.net> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210503155748.1961781-1-jason@jlekstrand.net> References: <20210503155748.1961781-1-jason@jlekstrand.net> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jason Ekstrand Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" The current context uAPI allows for two methods of setting context parameters: SET_CONTEXT_PARAM and CONTEXT_CREATE_EXT_SETPARAM. The former is allowed to be called at any time while the later happens as part of GEM_CONTEXT_CREATE. Currently, everything settable via one is settable via the other. While some params are fairly simple and setting them on a live context is harmless such the context priority, others are far trickier such as the VM or the set of engines. In order to swap out the VM, for instance, we have to delay until all current in-flight work is complete, swap in the new VM, and then continue. This leads to a plethora of potential race conditions we'd really rather avoid. Unfortunately, both methods of setting the VM and engine set are in active use today so we can't simply disallow setting the VM or engine set vial SET_CONTEXT_PARAM. In order to work around this wart, this commit adds a proto-context struct which contains all the context create parameters. Signed-off-by: Jason Ekstrand --- drivers/gpu/drm/i915/gem/i915_gem_context.c | 145 ++++++++++++++---- .../gpu/drm/i915/gem/i915_gem_context_types.h | 22 +++ .../gpu/drm/i915/gem/selftests/mock_context.c | 16 +- 3 files changed, 153 insertions(+), 30 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c index 4835991898ac9..10bd1b6dd1774 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c @@ -191,6 +191,97 @@ static int validate_priority(struct drm_i915_private *i915, return 0; } +static void proto_context_close(struct i915_gem_proto_context *pc) +{ + if (pc->vm) + i915_vm_put(pc->vm); + kfree(pc); +} + +static int proto_context_set_persistence(struct drm_i915_private *i915, + struct i915_gem_proto_context *pc, + bool persist) +{ + if (persist) { + /* + * Only contexts that are short-lived [that will expire or be + * reset] are allowed to survive past termination. We require + * hangcheck to ensure that the persistent requests are healthy. + */ + if (!i915->params.enable_hangcheck) + return -EINVAL; + + __set_bit(UCONTEXT_PERSISTENCE, &pc->user_flags); + } else { + /* To cancel a context we use "preempt-to-idle" */ + if (!(i915->caps.scheduler & I915_SCHEDULER_CAP_PREEMPTION)) + return -ENODEV; + + /* + * If the cancel fails, we then need to reset, cleanly! + * + * If the per-engine reset fails, all hope is lost! We resort + * to a full GPU reset in that unlikely case, but realistically + * if the engine could not reset, the full reset does not fare + * much better. The damage has been done. + * + * However, if we cannot reset an engine by itself, we cannot + * cleanup a hanging persistent context without causing + * colateral damage, and we should not pretend we can by + * exposing the interface. + */ + if (!intel_has_reset_engine(&i915->gt)) + return -ENODEV; + + __clear_bit(UCONTEXT_PERSISTENCE, &pc->user_flags); + } + + return 0; +} + +static struct i915_gem_proto_context * +proto_context_create(struct drm_i915_private *i915, unsigned int flags) +{ + struct i915_gem_proto_context *pc, *err; + + pc = kzalloc(sizeof(*pc), GFP_KERNEL); + if (!pc) + return ERR_PTR(-ENOMEM); + + if (HAS_FULL_PPGTT(i915)) { + struct i915_ppgtt *ppgtt; + + ppgtt = i915_ppgtt_create(&i915->gt); + if (IS_ERR(ppgtt)) { + drm_dbg(&i915->drm, "PPGTT setup failed (%ld)\n", + PTR_ERR(ppgtt)); + err = ERR_CAST(ppgtt); + goto proto_close; + } + pc->vm = &ppgtt->vm; + } + + pc->user_flags = 0; + __set_bit(UCONTEXT_BANNABLE, &pc->user_flags); + __set_bit(UCONTEXT_RECOVERABLE, &pc->user_flags); + proto_context_set_persistence(i915, pc, true); + pc->sched.priority = I915_PRIORITY_NORMAL; + + if (flags & I915_CONTEXT_CREATE_FLAGS_SINGLE_TIMELINE) { + if (!HAS_EXECLISTS(i915)) { + err = ERR_PTR(-EINVAL); + goto proto_close; + } + pc->single_timeline = true; + } + + return pc; + +proto_close: + proto_context_close(pc); + return err; +} + static struct i915_address_space * context_get_vm_rcu(struct i915_gem_context *ctx) { @@ -660,7 +751,8 @@ static int __context_set_persistence(struct i915_gem_context *ctx, bool state) } static struct i915_gem_context * -__create_context(struct drm_i915_private *i915) +__create_context(struct drm_i915_private *i915, + const struct i915_gem_proto_context *pc) { struct i915_gem_context *ctx; struct i915_gem_engines *e; @@ -673,7 +765,7 @@ __create_context(struct drm_i915_private *i915) kref_init(&ctx->ref); ctx->i915 = i915; - ctx->sched.priority = I915_PRIORITY_NORMAL; + ctx->sched = pc->sched; mutex_init(&ctx->mutex); INIT_LIST_HEAD(&ctx->link); @@ -696,9 +788,7 @@ __create_context(struct drm_i915_private *i915) * is no remap info, it will be a NOP. */ ctx->remap_slice = ALL_L3_SLICES(i915); - i915_gem_context_set_bannable(ctx); - i915_gem_context_set_recoverable(ctx); - __context_set_persistence(ctx, true /* cgroup hook? */); + ctx->user_flags = pc->user_flags; for (i = 0; i < ARRAY_SIZE(ctx->hang_timestamp); i++) ctx->hang_timestamp[i] = jiffies - CONTEXT_FAST_HANG_JIFFIES; @@ -786,38 +876,23 @@ static void __assign_ppgtt(struct i915_gem_context *ctx, } static struct i915_gem_context * -i915_gem_create_context(struct drm_i915_private *i915, unsigned int flags) +i915_gem_create_context(struct drm_i915_private *i915, + const struct i915_gem_proto_context *pc) { struct i915_gem_context *ctx; int ret; - if (flags & I915_CONTEXT_CREATE_FLAGS_SINGLE_TIMELINE && - !HAS_EXECLISTS(i915)) - return ERR_PTR(-EINVAL); - - ctx = __create_context(i915); + ctx = __create_context(i915, pc); if (IS_ERR(ctx)) return ctx; - if (HAS_FULL_PPGTT(i915)) { - struct i915_ppgtt *ppgtt; - - ppgtt = i915_ppgtt_create(&i915->gt); - if (IS_ERR(ppgtt)) { - drm_dbg(&i915->drm, "PPGTT setup failed (%ld)\n", - PTR_ERR(ppgtt)); - context_close(ctx); - return ERR_CAST(ppgtt); - } - + if (pc->vm) { mutex_lock(&ctx->mutex); - __assign_ppgtt(ctx, &ppgtt->vm); + __assign_ppgtt(ctx, pc->vm); mutex_unlock(&ctx->mutex); - - i915_vm_put(&ppgtt->vm); } - if (flags & I915_CONTEXT_CREATE_FLAGS_SINGLE_TIMELINE) { + if (pc->single_timeline) { ret = drm_syncobj_create(&ctx->syncobj, DRM_SYNCOBJ_CREATE_SIGNALED, NULL); @@ -883,6 +958,7 @@ int i915_gem_context_open(struct drm_i915_private *i915, struct drm_file *file) { struct drm_i915_file_private *file_priv = file->driver_priv; + struct i915_gem_proto_context *pc; struct i915_gem_context *ctx; int err; u32 id; @@ -892,7 +968,14 @@ int i915_gem_context_open(struct drm_i915_private *i915, /* 0 reserved for invalid/unassigned ppgtt */ xa_init_flags(&file_priv->vm_xa, XA_FLAGS_ALLOC1); - ctx = i915_gem_create_context(i915, 0); + pc = proto_context_create(i915, 0); + if (IS_ERR(pc)) { + err = PTR_ERR(pc); + goto err; + } + + ctx = i915_gem_create_context(i915, pc); + proto_context_close(pc); if (IS_ERR(ctx)) { err = PTR_ERR(ctx); goto err; @@ -1885,6 +1968,7 @@ int i915_gem_context_create_ioctl(struct drm_device *dev, void *data, { struct drm_i915_private *i915 = to_i915(dev); struct drm_i915_gem_context_create_ext *args = data; + struct i915_gem_proto_context *pc; struct create_ext ext_data; int ret; u32 id; @@ -1907,7 +1991,12 @@ int i915_gem_context_create_ioctl(struct drm_device *dev, void *data, return -EIO; } - ext_data.ctx = i915_gem_create_context(i915, args->flags); + pc = proto_context_create(i915, args->flags); + if (IS_ERR(pc)) + return PTR_ERR(pc); + + ext_data.ctx = i915_gem_create_context(i915, pc); + proto_context_close(pc); if (IS_ERR(ext_data.ctx)) return PTR_ERR(ext_data.ctx); diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context_types.h b/drivers/gpu/drm/i915/gem/i915_gem_context_types.h index 5f0673a2129f9..0bf337b6d89ac 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context_types.h +++ b/drivers/gpu/drm/i915/gem/i915_gem_context_types.h @@ -66,6 +66,28 @@ struct i915_gem_engines_iter { const struct i915_gem_engines *engines; }; +/** + * struct i915_gem_proto_context - prototype context + * + * The struct i915_gem_proto_context represents the creation parameters for + * an i915_gem_context. This is used to gather parameters provided either + * through creation flags or via SET_CONTEXT_PARAM so that, when we create + * the final i915_gem_context, those parameters can be immutable. + */ +struct i915_gem_proto_context { + /** @vm: See i915_gem_context::vm */ + struct i915_address_space *vm; + + /** @user_flags: See i915_gem_context::user_flags */ + unsigned long user_flags; + + /** @sched: See i915_gem_context::sched */ + struct i915_sched_attr sched; + + /** @single_timeline: See See i915_gem_context::syncobj */ + bool single_timeline; +}; + /** * struct i915_gem_context - client state * diff --git a/drivers/gpu/drm/i915/gem/selftests/mock_context.c b/drivers/gpu/drm/i915/gem/selftests/mock_context.c index 51b5a3421b400..e0f512ef7f3c6 100644 --- a/drivers/gpu/drm/i915/gem/selftests/mock_context.c +++ b/drivers/gpu/drm/i915/gem/selftests/mock_context.c @@ -80,11 +80,17 @@ void mock_init_contexts(struct drm_i915_private *i915) struct i915_gem_context * live_context(struct drm_i915_private *i915, struct file *file) { + struct i915_gem_proto_context *pc; struct i915_gem_context *ctx; int err; u32 id; - ctx = i915_gem_create_context(i915, 0); + pc = proto_context_create(i915, 0); + if (IS_ERR(pc)) + return ERR_CAST(pc); + + ctx = i915_gem_create_context(i915, pc); + proto_context_close(pc); if (IS_ERR(ctx)) return ctx; @@ -142,8 +148,14 @@ struct i915_gem_context * kernel_context(struct drm_i915_private *i915) { struct i915_gem_context *ctx; + struct i915_gem_proto_context *pc; + + pc = proto_context_create(i915, 0); + if (IS_ERR(pc)) + return ERR_CAST(pc); - ctx = i915_gem_create_context(i915, 0); + ctx = i915_gem_create_context(i915, pc); + proto_context_close(pc); if (IS_ERR(ctx)) return ctx; From patchwork Mon May 3 15:57:38 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Ekstrand X-Patchwork-Id: 12236435 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1AEF3C433ED for ; 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[134.134.139.74]) by smtp.gmail.com with ESMTPSA id gf21sm9783296pjb.20.2021.05.03.08.58.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 May 2021 08:58:23 -0700 (PDT) From: Jason Ekstrand To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH 17/27] drm/i915/gem: Rework error handling in default_engines Date: Mon, 3 May 2021 10:57:38 -0500 Message-Id: <20210503155748.1961781-18-jason@jlekstrand.net> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210503155748.1961781-1-jason@jlekstrand.net> References: <20210503155748.1961781-1-jason@jlekstrand.net> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jason Ekstrand Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Since free_engines works for partially constructed engine sets, we can use the usual goto pattern. Signed-off-by: Jason Ekstrand Reviewed-by: Daniel Vetter --- drivers/gpu/drm/i915/gem/i915_gem_context.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c index 10bd1b6dd1774..ce729e640bbf7 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c @@ -420,7 +420,7 @@ static struct i915_gem_engines *default_engines(struct i915_gem_context *ctx) { const struct intel_gt *gt = &ctx->i915->gt; struct intel_engine_cs *engine; - struct i915_gem_engines *e; + struct i915_gem_engines *e, *err; enum intel_engine_id id; e = alloc_engines(I915_NUM_ENGINES); @@ -438,18 +438,21 @@ static struct i915_gem_engines *default_engines(struct i915_gem_context *ctx) ce = intel_context_create(engine); if (IS_ERR(ce)) { - __free_engines(e, e->num_engines + 1); - return ERR_CAST(ce); + err = ERR_CAST(ce); + goto free_engines; } intel_context_set_gem(ce, ctx); e->engines[engine->legacy_idx] = ce; - e->num_engines = max(e->num_engines, engine->legacy_idx); + e->num_engines = max(e->num_engines, engine->legacy_idx + 1); } - e->num_engines++; return e; + +free_engines: + free_engines(e); + return err; } void i915_gem_context_release(struct kref *ref) From patchwork Mon May 3 15:57:39 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Ekstrand X-Patchwork-Id: 12236437 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.7 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNWANTED_LANGUAGE_BODY, URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BDB4DC43460 for ; Mon, 3 May 2021 15:58:47 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 76306610C8 for ; Mon, 3 May 2021 15:58:47 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 76306610C8 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=jlekstrand.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 33C0D6E904; Mon, 3 May 2021 15:58:28 +0000 (UTC) Received: from mail-pj1-x1034.google.com (mail-pj1-x1034.google.com [IPv6:2607:f8b0:4864:20::1034]) by gabe.freedesktop.org (Postfix) with ESMTPS id 3E3C26E902 for ; Mon, 3 May 2021 15:58:26 +0000 (UTC) Received: by mail-pj1-x1034.google.com with SMTP id fa21-20020a17090af0d5b0290157eb6b590fso2271742pjb.5 for ; Mon, 03 May 2021 08:58:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=jlekstrand-net.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=9/vxFC/2/WXE6B+fXIjznWqiWH9ALHpSPr0FYm0Z5H8=; b=xiaFlPFdpEJ9pEQhqtmHGdotDgROcs3TADJUPwS7/B4nJiXdm7sp69XFREyD6pGms4 krIMv7MPHVwFw3kVfYQdCVuCXGgiV5bWxi2v1IIc46imYpBx0vOvjqi60DZZZKFX0z3z TMrs/KiHYwoK5J6Ktgfssl4hlw4m0bTylCZQbOn1M1q4UMv97qY/l42t48I3fl9eCKjx 1g9s/ZngwNwT9MDCA+G8Sl81GuwGpZs7kGA8UNmkdIv+npFqG7HeSCwuarLI9H1xPEre pM5BYHLY/91Bw4RxyppnqiUyJU8FeE6OIzLpVZlnlUjUM2JJquROMZuRQwr4Fs1hEDSq DDAg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=9/vxFC/2/WXE6B+fXIjznWqiWH9ALHpSPr0FYm0Z5H8=; b=k5MYyjWTLDz1Nv/rtbcD2zr4p/3T21zEzZaPd6iW9pWfikGpu+/RWKqtar01mKj9wI uPJ0fqd3+k26QhD7fxFUq+k+XAnv4twVuelfmXQ9LPJ5n4lNFkZonKLElBCShU6Ac3gC NlVS1gWPpinGI9mgQsmWWjyLAkBcykz2bkT6liR3TrxIb23v/nzDx6vI8R2DwqxR9C8p J598Ad6K2wUv9/YYGkj6cegy5kKBh6XddxaTDnV4nW9XVVWA9JjQchMCkfsWZlU4bSTP IAalfk+Ik/jOrAXtrdN/lSO5/jXy6ZUvqY2X195jYDGzmI/97OiE6dw3hoFEAZdBhoRO uo/g== X-Gm-Message-State: AOAM533i3tusKPqcQuFdZWn6xwOmXg8DfPBIVCUV3fZsMDW5v9GjdjGT voO22fGHwlBgCqrIkLVNkO7P2SB1MH6IGw== X-Google-Smtp-Source: ABdhPJxW5gkSI1S1i4ImYq6JCnNQGbpQIVUIW00pv9F5eqxTQ134s++mbstXFHzP9nkPh1fJSNmsBA== X-Received: by 2002:a17:90a:1990:: with SMTP id 16mr31727027pji.172.1620057505763; Mon, 03 May 2021 08:58:25 -0700 (PDT) Received: from omlet.com (jfdmzpr05-ext.jf.intel.com. [134.134.139.74]) by smtp.gmail.com with ESMTPSA id gf21sm9783296pjb.20.2021.05.03.08.58.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 May 2021 08:58:25 -0700 (PDT) From: Jason Ekstrand To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH 18/27] drm/i915/gem: Optionally set SSEU in intel_context_set_gem Date: Mon, 3 May 2021 10:57:39 -0500 Message-Id: <20210503155748.1961781-19-jason@jlekstrand.net> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210503155748.1961781-1-jason@jlekstrand.net> References: <20210503155748.1961781-1-jason@jlekstrand.net> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jason Ekstrand Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" For now this is a no-op because everyone passes in a null SSEU but it lets us get some of the error handling and selftest refactoring plumbed through. Signed-off-by: Jason Ekstrand Reviewed-by: Daniel Vetter --- drivers/gpu/drm/i915/gem/i915_gem_context.c | 41 +++++++++++++++---- .../gpu/drm/i915/gem/selftests/mock_context.c | 6 ++- 2 files changed, 36 insertions(+), 11 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c index ce729e640bbf7..6dd50d669c5b9 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c @@ -320,9 +320,12 @@ context_get_vm_rcu(struct i915_gem_context *ctx) } while (1); } -static void intel_context_set_gem(struct intel_context *ce, - struct i915_gem_context *ctx) +static int intel_context_set_gem(struct intel_context *ce, + struct i915_gem_context *ctx, + struct intel_sseu sseu) { + int ret = 0; + GEM_BUG_ON(rcu_access_pointer(ce->gem_context)); RCU_INIT_POINTER(ce->gem_context, ctx); @@ -349,6 +352,12 @@ static void intel_context_set_gem(struct intel_context *ce, intel_context_set_watchdog_us(ce, (u64)timeout_ms * 1000); } + + /* A valid SSEU has no zero fields */ + if (sseu.slice_mask && !WARN_ON(ce->engine->class != RENDER_CLASS)) + ret = intel_context_reconfigure_sseu(ce, sseu); + + return ret; } static void __free_engines(struct i915_gem_engines *e, unsigned int count) @@ -416,7 +425,8 @@ static struct i915_gem_engines *alloc_engines(unsigned int count) return e; } -static struct i915_gem_engines *default_engines(struct i915_gem_context *ctx) +static struct i915_gem_engines *default_engines(struct i915_gem_context *ctx, + struct intel_sseu rcs_sseu) { const struct intel_gt *gt = &ctx->i915->gt; struct intel_engine_cs *engine; @@ -429,6 +439,8 @@ static struct i915_gem_engines *default_engines(struct i915_gem_context *ctx) for_each_engine(engine, gt, id) { struct intel_context *ce; + struct intel_sseu sseu = {}; + int ret; if (engine->legacy_idx == INVALID_ENGINE) continue; @@ -442,10 +454,18 @@ static struct i915_gem_engines *default_engines(struct i915_gem_context *ctx) goto free_engines; } - intel_context_set_gem(ce, ctx); - e->engines[engine->legacy_idx] = ce; e->num_engines = max(e->num_engines, engine->legacy_idx + 1); + + if (engine->class == RENDER_CLASS) + sseu = rcs_sseu; + + ret = intel_context_set_gem(ce, ctx, sseu); + if (ret) { + err = ERR_PTR(ret); + goto free_engines; + } + } return e; @@ -759,6 +779,7 @@ __create_context(struct drm_i915_private *i915, { struct i915_gem_context *ctx; struct i915_gem_engines *e; + struct intel_sseu null_sseu = {}; int err; int i; @@ -776,7 +797,7 @@ __create_context(struct drm_i915_private *i915, INIT_LIST_HEAD(&ctx->stale.engines); mutex_init(&ctx->engines_mutex); - e = default_engines(ctx); + e = default_engines(ctx, null_sseu); if (IS_ERR(e)) { err = PTR_ERR(e); goto err_free; @@ -1544,6 +1565,7 @@ set_engines__load_balance(struct i915_user_extension __user *base, void *data) struct intel_engine_cs *stack[16]; struct intel_engine_cs **siblings; struct intel_context *ce; + struct intel_sseu null_sseu = {}; u16 num_siblings, idx; unsigned int n; int err; @@ -1616,7 +1638,7 @@ set_engines__load_balance(struct i915_user_extension __user *base, void *data) goto out_siblings; } - intel_context_set_gem(ce, set->ctx); + intel_context_set_gem(ce, set->ctx, null_sseu); if (cmpxchg(&set->engines->engines[idx], NULL, ce)) { intel_context_put(ce); @@ -1724,6 +1746,7 @@ set_engines(struct i915_gem_context *ctx, struct drm_i915_private *i915 = ctx->i915; struct i915_context_param_engines __user *user = u64_to_user_ptr(args->value); + struct intel_sseu null_sseu = {}; struct set_engines set = { .ctx = ctx }; unsigned int num_engines, n; u64 extensions; @@ -1733,7 +1756,7 @@ set_engines(struct i915_gem_context *ctx, if (!i915_gem_context_user_engines(ctx)) return 0; - set.engines = default_engines(ctx); + set.engines = default_engines(ctx, null_sseu); if (IS_ERR(set.engines)) return PTR_ERR(set.engines); @@ -1790,7 +1813,7 @@ set_engines(struct i915_gem_context *ctx, return PTR_ERR(ce); } - intel_context_set_gem(ce, ctx); + intel_context_set_gem(ce, ctx, null_sseu); set.engines->engines[n] = ce; } diff --git a/drivers/gpu/drm/i915/gem/selftests/mock_context.c b/drivers/gpu/drm/i915/gem/selftests/mock_context.c index e0f512ef7f3c6..cbeefd060e97b 100644 --- a/drivers/gpu/drm/i915/gem/selftests/mock_context.c +++ b/drivers/gpu/drm/i915/gem/selftests/mock_context.c @@ -14,6 +14,7 @@ mock_context(struct drm_i915_private *i915, { struct i915_gem_context *ctx; struct i915_gem_engines *e; + struct intel_sseu null_sseu = {}; ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); if (!ctx) @@ -31,7 +32,7 @@ mock_context(struct drm_i915_private *i915, i915_gem_context_set_persistence(ctx); mutex_init(&ctx->engines_mutex); - e = default_engines(ctx); + e = default_engines(ctx, null_sseu); if (IS_ERR(e)) goto err_free; RCU_INIT_POINTER(ctx->engines, e); @@ -112,6 +113,7 @@ live_context_for_engine(struct intel_engine_cs *engine, struct file *file) { struct i915_gem_engines *engines; struct i915_gem_context *ctx; + struct intel_sseu null_sseu = {}; struct intel_context *ce; engines = alloc_engines(1); @@ -130,7 +132,7 @@ live_context_for_engine(struct intel_engine_cs *engine, struct file *file) return ERR_CAST(ce); } - intel_context_set_gem(ce, ctx); + intel_context_set_gem(ce, ctx, null_sseu); engines->engines[0] = ce; engines->num_engines = 1; From patchwork Mon May 3 15:57:40 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Ekstrand X-Patchwork-Id: 12236439 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E870CC433ED for ; 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[134.134.139.74]) by smtp.gmail.com with ESMTPSA id gf21sm9783296pjb.20.2021.05.03.08.58.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 May 2021 08:58:26 -0700 (PDT) From: Jason Ekstrand To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH 19/27] drm/i915/gem: Use the proto-context to handle create parameters Date: Mon, 3 May 2021 10:57:40 -0500 Message-Id: <20210503155748.1961781-20-jason@jlekstrand.net> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210503155748.1961781-1-jason@jlekstrand.net> References: <20210503155748.1961781-1-jason@jlekstrand.net> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jason Ekstrand Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" This means that the proto-context needs to grow support for engine configuration information as well as setparam logic. Fortunately, we'll be deleting a lot of setparam logic on the primary context shortly so it will hopefully balance out. Signed-off-by: Jason Ekstrand Reviewed-by: Daniel Vetter --- drivers/gpu/drm/i915/gem/i915_gem_context.c | 546 +++++++++++++++++- .../gpu/drm/i915/gem/i915_gem_context_types.h | 58 ++ 2 files changed, 587 insertions(+), 17 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c index 6dd50d669c5b9..aa4edfbf7ed48 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c @@ -193,8 +193,15 @@ static int validate_priority(struct drm_i915_private *i915, static void proto_context_close(struct i915_gem_proto_context *pc) { + int i; + if (pc->vm) i915_vm_put(pc->vm); + if (pc->user_engines) { + for (i = 0; i < pc->num_user_engines; i++) + kfree(pc->user_engines[i].siblings); + kfree(pc->user_engines); + } kfree(pc); } @@ -248,6 +255,9 @@ proto_context_create(struct drm_i915_private *i915, unsigned int flags) if (!pc) return ERR_PTR(-ENOMEM); + pc->num_user_engines = -1; + pc->user_engines = NULL; + if (HAS_FULL_PPGTT(i915)) { struct i915_ppgtt *ppgtt; @@ -282,6 +292,439 @@ proto_context_create(struct drm_i915_private *i915, unsigned int flags) return err; } +static int set_proto_ctx_vm(struct drm_i915_file_private *fpriv, + struct i915_gem_proto_context *pc, + const struct drm_i915_gem_context_param *args) +{ + struct i915_address_space *vm; + + if (args->size) + return -EINVAL; + + if (!pc->vm) + return -ENODEV; + + if (upper_32_bits(args->value)) + return -ENOENT; + + rcu_read_lock(); + vm = xa_load(&fpriv->vm_xa, args->value); + if (vm && !kref_get_unless_zero(&vm->ref)) + vm = NULL; + rcu_read_unlock(); + if (!vm) + return -ENOENT; + + i915_vm_put(pc->vm); + pc->vm = vm; + + return 0; +} + +struct set_proto_ctx_engines { + struct drm_i915_private *i915; + unsigned num_engines; + struct i915_gem_proto_engine *engines; +}; + +static int +set_proto_ctx_engines_balance(struct i915_user_extension __user *base, + void *data) +{ + struct i915_context_engines_load_balance __user *ext = + container_of_user(base, typeof(*ext), base); + const struct set_proto_ctx_engines *set = data; + struct drm_i915_private *i915 = set->i915; + struct intel_engine_cs **siblings; + u16 num_siblings, idx; + unsigned int n; + int err; + + if (!HAS_EXECLISTS(i915)) + return -ENODEV; + + if (intel_uc_uses_guc_submission(&i915->gt.uc)) + return -ENODEV; /* not implement yet */ + + if (get_user(idx, &ext->engine_index)) + return -EFAULT; + + if (idx >= set->num_engines) { + drm_dbg(&i915->drm, "Invalid placement value, %d >= %d\n", + idx, set->num_engines); + return -EINVAL; + } + + idx = array_index_nospec(idx, set->num_engines); + if (set->engines[idx].type != I915_GEM_ENGINE_TYPE_INVALID) { + drm_dbg(&i915->drm, + "Invalid placement[%d], already occupied\n", idx); + return -EEXIST; + } + + if (get_user(num_siblings, &ext->num_siblings)) + return -EFAULT; + + err = check_user_mbz(&ext->flags); + if (err) + return err; + + err = check_user_mbz(&ext->mbz64); + if (err) + return err; + + if (num_siblings == 0) + return 0; + + siblings = kmalloc_array(num_siblings, sizeof(*siblings), GFP_KERNEL); + if (!siblings) + return -ENOMEM; + + for (n = 0; n < num_siblings; n++) { + struct i915_engine_class_instance ci; + + if (copy_from_user(&ci, &ext->engines[n], sizeof(ci))) { + err = -EFAULT; + goto err_siblings; + } + + siblings[n] = intel_engine_lookup_user(i915, + ci.engine_class, + ci.engine_instance); + if (!siblings[n]) { + drm_dbg(&i915->drm, + "Invalid sibling[%d]: { class:%d, inst:%d }\n", + n, ci.engine_class, ci.engine_instance); + err = -EINVAL; + goto err_siblings; + } + } + + if (num_siblings == 1) { + set->engines[idx].type = I915_GEM_ENGINE_TYPE_PHYSICAL; + set->engines[idx].engine = siblings[0]; + kfree(siblings); + } else { + set->engines[idx].type = I915_GEM_ENGINE_TYPE_BALANCED; + set->engines[idx].num_siblings = num_siblings; + set->engines[idx].siblings = siblings; + } + + return 0; + +err_siblings: + kfree(siblings); + + return err; +} + +static int +set_proto_ctx_engines_bond(struct i915_user_extension __user *base, void *data) +{ + struct i915_context_engines_bond __user *ext = + container_of_user(base, typeof(*ext), base); + const struct set_proto_ctx_engines *set = data; + struct drm_i915_private *i915 = set->i915; + struct i915_engine_class_instance ci; + struct intel_engine_cs *master; + u16 idx, num_bonds; + int err, n; + + if (get_user(idx, &ext->virtual_index)) + return -EFAULT; + + if (idx >= set->num_engines) { + drm_dbg(&i915->drm, + "Invalid index for virtual engine: %d >= %d\n", + idx, set->num_engines); + return -EINVAL; + } + + idx = array_index_nospec(idx, set->num_engines); + if (set->engines[idx].type == I915_GEM_ENGINE_TYPE_INVALID) { + drm_dbg(&i915->drm, "Invalid engine at %d\n", idx); + return -EINVAL; + } + + if (set->engines[idx].type != I915_GEM_ENGINE_TYPE_PHYSICAL) { + drm_dbg(&i915->drm, + "Bonding with virtual engines not allowed\n"); + return -EINVAL; + } + + err = check_user_mbz(&ext->flags); + if (err) + return err; + + for (n = 0; n < ARRAY_SIZE(ext->mbz64); n++) { + err = check_user_mbz(&ext->mbz64[n]); + if (err) + return err; + } + + if (copy_from_user(&ci, &ext->master, sizeof(ci))) + return -EFAULT; + + master = intel_engine_lookup_user(i915, + ci.engine_class, + ci.engine_instance); + if (!master) { + drm_dbg(&i915->drm, + "Unrecognised master engine: { class:%u, instance:%u }\n", + ci.engine_class, ci.engine_instance); + return -EINVAL; + } + + if (get_user(num_bonds, &ext->num_bonds)) + return -EFAULT; + + for (n = 0; n < num_bonds; n++) { + struct intel_engine_cs *bond; + + if (copy_from_user(&ci, &ext->engines[n], sizeof(ci))) + return -EFAULT; + + bond = intel_engine_lookup_user(i915, + ci.engine_class, + ci.engine_instance); + if (!bond) { + drm_dbg(&i915->drm, + "Unrecognised engine[%d] for bonding: { class:%d, instance: %d }\n", + n, ci.engine_class, ci.engine_instance); + return -EINVAL; + } + } + + return 0; +} + +static const i915_user_extension_fn set_proto_ctx_engines_extensions[] = { + [I915_CONTEXT_ENGINES_EXT_LOAD_BALANCE] = set_proto_ctx_engines_balance, + [I915_CONTEXT_ENGINES_EXT_BOND] = set_proto_ctx_engines_bond, +}; + +static int set_proto_ctx_engines(struct drm_i915_file_private *fpriv, + struct i915_gem_proto_context *pc, + const struct drm_i915_gem_context_param *args) +{ + struct drm_i915_private *i915 = fpriv->dev_priv; + struct set_proto_ctx_engines set = { .i915 = i915 }; + struct i915_context_param_engines __user *user = + u64_to_user_ptr(args->value); + unsigned int n; + u64 extensions; + int err; + + if (!args->size) { + kfree(pc->user_engines); + pc->num_user_engines = -1; + pc->user_engines = NULL; + memset(&pc->legacy_rcs_sseu, 0, sizeof(pc->legacy_rcs_sseu)); + return 0; + } + + BUILD_BUG_ON(!IS_ALIGNED(sizeof(*user), sizeof(*user->engines))); + if (args->size < sizeof(*user) || + !IS_ALIGNED(args->size, sizeof(*user->engines))) { + drm_dbg(&i915->drm, "Invalid size for engine array: %d\n", + args->size); + return -EINVAL; + } + + set.num_engines = (args->size - sizeof(*user)) / sizeof(*user->engines); + /* RING_MASK has no shift so we can use it directly here */ + if (set.num_engines > I915_EXEC_RING_MASK + 1) + return -EINVAL; + + set.engines = kmalloc_array(set.num_engines, sizeof(*set.engines), GFP_KERNEL); + if (!set.engines) + return -ENOMEM; + + for (n = 0; n < set.num_engines; n++) { + struct i915_engine_class_instance ci; + struct intel_engine_cs *engine; + + if (copy_from_user(&ci, &user->engines[n], sizeof(ci))) { + kfree(set.engines); + return -EFAULT; + } + + memset(&set.engines[n], 0, sizeof(set.engines[n])); + + if (ci.engine_class == (u16)I915_ENGINE_CLASS_INVALID && + ci.engine_instance == (u16)I915_ENGINE_CLASS_INVALID_NONE) + continue; + + engine = intel_engine_lookup_user(i915, + ci.engine_class, + ci.engine_instance); + if (!engine) { + drm_dbg(&i915->drm, + "Invalid engine[%d]: { class:%d, instance:%d }\n", + n, ci.engine_class, ci.engine_instance); + kfree(set.engines); + return -ENOENT; + } + + set.engines[n].type = I915_GEM_ENGINE_TYPE_PHYSICAL; + set.engines[n].engine = engine; + } + + err = -EFAULT; + if (!get_user(extensions, &user->extensions)) + err = i915_user_extensions(u64_to_user_ptr(extensions), + set_proto_ctx_engines_extensions, + ARRAY_SIZE(set_proto_ctx_engines_extensions), + &set); + if (err) { + kfree(set.engines); + return err; + } + + kfree(pc->user_engines); + pc->num_user_engines = set.num_engines; + pc->user_engines = set.engines; + + return 0; +} + +static int set_proto_ctx_sseu(struct drm_i915_file_private *fpriv, + struct i915_gem_proto_context *pc, + struct drm_i915_gem_context_param *args) +{ + struct drm_i915_private *i915 = fpriv->dev_priv; + struct drm_i915_gem_context_param_sseu user_sseu; + struct intel_sseu *sseu; + int ret; + + if (args->size < sizeof(user_sseu)) + return -EINVAL; + + if (!IS_GEN(i915, 11)) + return -ENODEV; + + if (copy_from_user(&user_sseu, u64_to_user_ptr(args->value), + sizeof(user_sseu))) + return -EFAULT; + + if (user_sseu.rsvd) + return -EINVAL; + + if (user_sseu.flags & ~(I915_CONTEXT_SSEU_FLAG_ENGINE_INDEX)) + return -EINVAL; + + if (!!(user_sseu.flags & I915_CONTEXT_SSEU_FLAG_ENGINE_INDEX) != (pc->num_user_engines >= 0)) + return -EINVAL; + + if (pc->num_user_engines >= 0) { + int idx = user_sseu.engine.engine_instance; + struct i915_gem_proto_engine *pe; + + if (idx >= pc->num_user_engines) + return -EINVAL; + + pe = &pc->user_engines[idx]; + + /* Only render engine supports RPCS configuration. */ + if (pe->engine->class != RENDER_CLASS) + return -EINVAL; + + sseu = &pe->sseu; + } else { + /* Only render engine supports RPCS configuration. */ + if (user_sseu.engine.engine_class != I915_ENGINE_CLASS_RENDER) + return -EINVAL; + + /* There is only one render engine */ + if (user_sseu.engine.engine_instance != 0) + return -EINVAL; + + sseu = &pc->legacy_rcs_sseu; + } + + ret = i915_gem_user_to_context_sseu(&i915->gt, &user_sseu, sseu); + if (ret) + return ret; + + args->size = sizeof(user_sseu); + + return 0; +} + +static int set_proto_ctx_param(struct drm_i915_file_private *fpriv, + struct i915_gem_proto_context *pc, + struct drm_i915_gem_context_param *args) +{ + int ret = 0; + + switch (args->param) { + case I915_CONTEXT_PARAM_NO_ERROR_CAPTURE: + if (args->size) + ret = -EINVAL; + else if (args->value) + __set_bit(UCONTEXT_NO_ERROR_CAPTURE, &pc->user_flags); + else + __clear_bit(UCONTEXT_NO_ERROR_CAPTURE, &pc->user_flags); + break; + + case I915_CONTEXT_PARAM_BANNABLE: + if (args->size) + ret = -EINVAL; + else if (!capable(CAP_SYS_ADMIN) && !args->value) + ret = -EPERM; + else if (args->value) + __set_bit(UCONTEXT_BANNABLE, &pc->user_flags); + else + __clear_bit(UCONTEXT_BANNABLE, &pc->user_flags); + break; + + case I915_CONTEXT_PARAM_RECOVERABLE: + if (args->size) + ret = -EINVAL; + else if (args->value) + __set_bit(UCONTEXT_RECOVERABLE, &pc->user_flags); + else + __clear_bit(UCONTEXT_RECOVERABLE, &pc->user_flags); + break; + + case I915_CONTEXT_PARAM_PRIORITY: + ret = validate_priority(fpriv->dev_priv, args); + if (!ret) + pc->sched.priority = args->value; + break; + + case I915_CONTEXT_PARAM_SSEU: + ret = set_proto_ctx_sseu(fpriv, pc, args); + break; + + case I915_CONTEXT_PARAM_VM: + ret = set_proto_ctx_vm(fpriv, pc, args); + break; + + case I915_CONTEXT_PARAM_ENGINES: + ret = set_proto_ctx_engines(fpriv, pc, args); + break; + + case I915_CONTEXT_PARAM_PERSISTENCE: + if (args->size) + ret = -EINVAL; + else if (args->value) + __set_bit(UCONTEXT_PERSISTENCE, &pc->user_flags); + else + __clear_bit(UCONTEXT_PERSISTENCE, &pc->user_flags); + break; + + case I915_CONTEXT_PARAM_NO_ZEROMAP: + case I915_CONTEXT_PARAM_BAN_PERIOD: + case I915_CONTEXT_PARAM_RINGSIZE: + default: + ret = -EINVAL; + break; + } + + return ret; +} + static struct i915_address_space * context_get_vm_rcu(struct i915_gem_context *ctx) { @@ -475,6 +918,56 @@ static struct i915_gem_engines *default_engines(struct i915_gem_context *ctx, return err; } +static struct i915_gem_engines *user_engines(struct i915_gem_context *ctx, + unsigned int num_engines, + struct i915_gem_proto_engine *pe) +{ + struct i915_gem_engines *e, *err; + unsigned int n; + + e = alloc_engines(num_engines); + for (n = 0; n < num_engines; n++) { + struct intel_context *ce; + int ret; + + switch (pe[n].type) { + case I915_GEM_ENGINE_TYPE_PHYSICAL: + ce = intel_context_create(pe[n].engine); + break; + + case I915_GEM_ENGINE_TYPE_BALANCED: + ce = intel_execlists_create_virtual(pe[n].siblings, + pe[n].num_siblings); + break; + + case I915_GEM_ENGINE_TYPE_INVALID: + default: + GEM_WARN_ON(pe[n].type != I915_GEM_ENGINE_TYPE_INVALID); + continue; + } + + if (IS_ERR(ce)) { + err = ERR_CAST(ce); + goto free_engines; + } + + e->engines[n] = ce; + + ret = intel_context_set_gem(ce, ctx, pe->sseu); + if (ret) { + err = ERR_PTR(ret); + goto free_engines; + } + } + e->num_engines = num_engines; + + return e; + +free_engines: + free_engines(e); + return err; +} + void i915_gem_context_release(struct kref *ref) { struct i915_gem_context *ctx = container_of(ref, typeof(*ctx), ref); @@ -779,7 +1272,6 @@ __create_context(struct drm_i915_private *i915, { struct i915_gem_context *ctx; struct i915_gem_engines *e; - struct intel_sseu null_sseu = {}; int err; int i; @@ -797,7 +1289,7 @@ __create_context(struct drm_i915_private *i915, INIT_LIST_HEAD(&ctx->stale.engines); mutex_init(&ctx->engines_mutex); - e = default_engines(ctx, null_sseu); + e = default_engines(ctx, pc->legacy_rcs_sseu); if (IS_ERR(e)) { err = PTR_ERR(e); goto err_free; @@ -916,6 +1408,24 @@ i915_gem_create_context(struct drm_i915_private *i915, mutex_unlock(&ctx->mutex); } + if (pc->num_user_engines >= 0) { + struct i915_gem_engines *engines; + + engines = user_engines(ctx, pc->num_user_engines, + pc->user_engines); + if (IS_ERR(engines)) { + context_close(ctx); + return ERR_CAST(engines); + } + + mutex_lock(&ctx->engines_mutex); + i915_gem_context_set_user_engines(ctx); + engines = rcu_replace_pointer(ctx->engines, engines, 1); + mutex_unlock(&ctx->engines_mutex); + + free_engines(engines); + } + if (pc->single_timeline) { ret = drm_syncobj_create(&ctx->syncobj, DRM_SYNCOBJ_CREATE_SIGNALED, @@ -1956,7 +2466,7 @@ static int ctx_setparam(struct drm_i915_file_private *fpriv, } struct create_ext { - struct i915_gem_context *ctx; + struct i915_gem_proto_context *pc; struct drm_i915_file_private *fpriv; }; @@ -1971,7 +2481,7 @@ static int create_setparam(struct i915_user_extension __user *ext, void *data) if (local.param.ctx_id) return -EINVAL; - return ctx_setparam(arg->fpriv, arg->ctx, &local.param); + return set_proto_ctx_param(arg->fpriv, arg->pc, &local.param); } static int invalid_ext(struct i915_user_extension __user *ext, void *data) @@ -1994,7 +2504,7 @@ int i915_gem_context_create_ioctl(struct drm_device *dev, void *data, { struct drm_i915_private *i915 = to_i915(dev); struct drm_i915_gem_context_create_ext *args = data; - struct i915_gem_proto_context *pc; + struct i915_gem_context *ctx; struct create_ext ext_data; int ret; u32 id; @@ -2017,25 +2527,27 @@ int i915_gem_context_create_ioctl(struct drm_device *dev, void *data, return -EIO; } - pc = proto_context_create(i915, args->flags); - if (IS_ERR(pc)) - return PTR_ERR(pc); - - ext_data.ctx = i915_gem_create_context(i915, pc); - proto_context_close(pc); - if (IS_ERR(ext_data.ctx)) - return PTR_ERR(ext_data.ctx); + ext_data.pc = proto_context_create(i915, args->flags); + if (IS_ERR(ext_data.pc)) + return PTR_ERR(ext_data.pc); if (args->flags & I915_CONTEXT_CREATE_FLAGS_USE_EXTENSIONS) { ret = i915_user_extensions(u64_to_user_ptr(args->extensions), create_extensions, ARRAY_SIZE(create_extensions), &ext_data); - if (ret) - goto err_ctx; + if (ret) { + proto_context_close(ext_data.pc); + return ret; + } } - ret = gem_context_register(ext_data.ctx, ext_data.fpriv, &id); + ctx = i915_gem_create_context(i915, ext_data.pc); + proto_context_close(ext_data.pc); + if (IS_ERR(ctx)) + return PTR_ERR(ctx); + + ret = gem_context_register(ctx, ext_data.fpriv, &id); if (ret < 0) goto err_ctx; @@ -2045,7 +2557,7 @@ int i915_gem_context_create_ioctl(struct drm_device *dev, void *data, return 0; err_ctx: - context_close(ext_data.ctx); + context_close(ctx); return ret; } diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context_types.h b/drivers/gpu/drm/i915/gem/i915_gem_context_types.h index 0bf337b6d89ac..2ac341f805c8f 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context_types.h +++ b/drivers/gpu/drm/i915/gem/i915_gem_context_types.h @@ -66,6 +66,55 @@ struct i915_gem_engines_iter { const struct i915_gem_engines *engines; }; +/** + * enum i915_gem_engine_type - Describes the type of an i915_gem_proto_engine + */ +enum i915_gem_engine_type { + /** @I915_GEM_ENGINE_TYPE_INVALID: An invalid engine */ + I915_GEM_ENGINE_TYPE_INVALID = 0, + + /** @I915_GEM_ENGINE_TYPE_PHYSICAL: A single physical engine */ + I915_GEM_ENGINE_TYPE_PHYSICAL, + + /** @I915_GEM_ENGINE_TYPE_BALANCED: A load-balanced engine set */ + I915_GEM_ENGINE_TYPE_BALANCED, +}; + +/** + * struct i915_gem_proto_engine - prototype engine + * + * This struct describes an engine that a context may contain. Engines + * have three types: + * + * - I915_GEM_ENGINE_TYPE_INVALID: Invalid engines can be created but they + * show up as a NULL in i915_gem_engines::engines[i] and any attempt to + * use them by the user results in -EINVAL. They are also useful during + * proto-context construction because the client may create invalid + * engines and then set them up later as bonded engines. + * + * - I915_GEM_ENGINE_TYPE_PHYSICAL: A single physical engine, described by + * i915_gem_proto_engine::engine. + * + * - I915_GEM_ENGINE_TYPE_BALANCED: A load-balanced engine set, described + * i915_gem_proto_engine::num_siblings and i915_gem_proto_engine::siblings. + */ +struct i915_gem_proto_engine { + /** @type: Type of this engine */ + enum i915_gem_engine_type type; + + /** @engine: Engine, for physical */ + struct intel_engine_cs *engine; + + /** @num_siblings: Number of balanced siblings */ + unsigned int num_siblings; + + /** @siblings: Balanced siblings */ + struct intel_engine_cs **siblings; + + /** @sseu: Client-set SSEU parameters */ + struct intel_sseu sseu; +}; + /** * struct i915_gem_proto_context - prototype context * @@ -84,6 +133,15 @@ struct i915_gem_proto_context { /** @sched: See i915_gem_context::sched */ struct i915_sched_attr sched; + /** @num_user_engines: Number of user-specified engines or -1 */ + int num_user_engines; + + /** @user_engines: User-specified engines */ + struct i915_gem_proto_engine *user_engines; + + /** @sseu: Client-set SSEU parameters for the legacy RCS */ + struct intel_sseu legacy_rcs_sseu; + /** @single_timeline: See See i915_gem_context::syncobj */ bool single_timeline; }; From patchwork Mon May 3 15:57:41 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Ekstrand X-Patchwork-Id: 12236441 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4065FC43462 for ; Mon, 3 May 2021 15:58:51 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id E200761164 for ; Mon, 3 May 2021 15:58:50 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E200761164 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=jlekstrand.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 2E8E46E909; Mon, 3 May 2021 15:58:31 +0000 (UTC) Received: from mail-pf1-x42a.google.com (mail-pf1-x42a.google.com [IPv6:2607:f8b0:4864:20::42a]) by gabe.freedesktop.org (Postfix) with ESMTPS id 7F4D66E902 for ; Mon, 3 May 2021 15:58:29 +0000 (UTC) Received: by mail-pf1-x42a.google.com with SMTP id m11so4452295pfc.11 for ; Mon, 03 May 2021 08:58:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=jlekstrand-net.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=pGbRfkYO2tB9Xa9gRZykJRU1Fx3KbrdM+GhGgkHKxkI=; b=FRyN2trmreTDe9adJ+VImkN4XiFGBjt97ynebNty4iaxnOqLK1q2Dc5MSsNSl7LgkE 5iZGUdMzRVteeJ1FP14+z6+x/kqF/b9Kcg/rggFdBn3pBRnycnsbX+Kby/IvDzi8em5v k48yqf1sfZHy0/X8P6TP9vCaRkEqwGRSDO0xODjo+sA5bZ7eVJ97hiuh3yiJjHM5ZiFm XB+en/D6aQ8VpQum1gDOABRqT3/dXUQ559ZqyEX8jZPJDmFIsnzi9zsfn5XhbOino6c2 Mp055Fvged267kK+HBeB+yltW3YMptonOQaKaG2MzYBiSXYJNtqgul6x13VRhilUivI8 7hLA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=pGbRfkYO2tB9Xa9gRZykJRU1Fx3KbrdM+GhGgkHKxkI=; b=TBy6z/1w0xhWQe96GfkIZIseQfAoxovYS6oe8OKAjrMzdBcsMvXP556KfozNwnAJlt gWFLJxaW5lXyn8vkWIk+au35V8s9ei1GjwKq5k7VDajYrXYcNgiAxcy9GWomy9QiRZ6A WlujodbGWZgLCDL8JappEvdFRKWmJRpzbC785ezbDZrWY4/649zjTTjmDzw7bBBiWVq4 qVI/6NRkbtmr+6vhXsRQgbh7Mt1VQ7ETblPQTKnffX5wmQrxyLSTYKGEOKEu9z5MpMSh DOWBF4UP8CwDV5NWXsjhmG0ASmLcRkmp6AkDALzmT52eS5Kswr+7nxZ5Hk6A0YnZUh5Q 7EXA== X-Gm-Message-State: AOAM532Z8E56ZaKW4pvHU8qyJd62i+vJ6eUxoMnQJ8smIUui4O0DPQCT 4zec0IHAAg/h4s64KhWKbJ9Jzw== X-Google-Smtp-Source: ABdhPJxGqXOW9Y8n1eLyuF5BewQvk+9IImzJVuvB67uZ6gPkLB+RcoFXnipE4PaP8PxI23MutqKpPQ== X-Received: by 2002:a63:1d5d:: with SMTP id d29mr19493025pgm.398.1620057509054; Mon, 03 May 2021 08:58:29 -0700 (PDT) Received: from omlet.com (jfdmzpr05-ext.jf.intel.com. [134.134.139.74]) by smtp.gmail.com with ESMTPSA id gf21sm9783296pjb.20.2021.05.03.08.58.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 May 2021 08:58:28 -0700 (PDT) From: Jason Ekstrand To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH 20/27] drm/i915/gem: Return an error ptr from context_lookup Date: Mon, 3 May 2021 10:57:41 -0500 Message-Id: <20210503155748.1961781-21-jason@jlekstrand.net> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210503155748.1961781-1-jason@jlekstrand.net> References: <20210503155748.1961781-1-jason@jlekstrand.net> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Daniel Vetter , Jason Ekstrand Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" We're about to start doing lazy context creation which means contexts get created in i915_gem_context_lookup and we may start having more errors than -ENOENT. Signed-off-by: Jason Ekstrand Reviewed-by: Daniel Vetter --- drivers/gpu/drm/i915/gem/i915_gem_context.c | 12 ++++++------ drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c | 4 ++-- drivers/gpu/drm/i915/i915_drv.h | 2 +- drivers/gpu/drm/i915/i915_perf.c | 4 ++-- 4 files changed, 11 insertions(+), 11 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c index aa4edfbf7ed48..d84d704534128 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c @@ -2646,8 +2646,8 @@ int i915_gem_context_getparam_ioctl(struct drm_device *dev, void *data, int ret = 0; ctx = i915_gem_context_lookup(file_priv, args->ctx_id); - if (!ctx) - return -ENOENT; + if (IS_ERR(ctx)) + return PTR_ERR(ctx); switch (args->param) { case I915_CONTEXT_PARAM_GTT_SIZE: @@ -2715,8 +2715,8 @@ int i915_gem_context_setparam_ioctl(struct drm_device *dev, void *data, int ret; ctx = i915_gem_context_lookup(file_priv, args->ctx_id); - if (!ctx) - return -ENOENT; + if (IS_ERR(ctx)) + return PTR_ERR(ctx); ret = ctx_setparam(file_priv, ctx, args); @@ -2735,8 +2735,8 @@ int i915_gem_context_reset_stats_ioctl(struct drm_device *dev, return -EINVAL; ctx = i915_gem_context_lookup(file->driver_priv, args->ctx_id); - if (!ctx) - return -ENOENT; + if (IS_ERR(ctx)) + return PTR_ERR(ctx); /* * We opt for unserialised reads here. This may result in tearing diff --git a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c index 7024adcd5cf15..de14b26f3b2d5 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c @@ -739,8 +739,8 @@ static int eb_select_context(struct i915_execbuffer *eb) struct i915_gem_context *ctx; ctx = i915_gem_context_lookup(eb->file->driver_priv, eb->args->rsvd1); - if (unlikely(!ctx)) - return -ENOENT; + if (unlikely(IS_ERR(ctx))) + return PTR_ERR(ctx); eb->gem_context = ctx; if (rcu_access_pointer(ctx->vm)) diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 8571c5c1509a7..004ed0e59c999 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -1851,7 +1851,7 @@ i915_gem_context_lookup(struct drm_i915_file_private *file_priv, u32 id) ctx = NULL; rcu_read_unlock(); - return ctx; + return ctx ? ctx : ERR_PTR(-ENOENT); } /* i915_gem_evict.c */ diff --git a/drivers/gpu/drm/i915/i915_perf.c b/drivers/gpu/drm/i915/i915_perf.c index 85ad62dbabfab..b86ed03f6a705 100644 --- a/drivers/gpu/drm/i915/i915_perf.c +++ b/drivers/gpu/drm/i915/i915_perf.c @@ -3414,10 +3414,10 @@ i915_perf_open_ioctl_locked(struct i915_perf *perf, struct drm_i915_file_private *file_priv = file->driver_priv; specific_ctx = i915_gem_context_lookup(file_priv, ctx_handle); - if (!specific_ctx) { + if (IS_ERR(specific_ctx)) { DRM_DEBUG("Failed to look up context with ID %u for opening perf stream\n", ctx_handle); - ret = -ENOENT; + ret = PTR_ERR(specific_ctx); goto err; } } From patchwork Mon May 3 15:57:42 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Ekstrand X-Patchwork-Id: 12236443 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C54BAC43461 for ; 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[134.134.139.74]) by smtp.gmail.com with ESMTPSA id gf21sm9783296pjb.20.2021.05.03.08.58.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 May 2021 08:58:30 -0700 (PDT) From: Jason Ekstrand To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH 21/27] drm/i915/gt: Drop i915_address_space::file (v2) Date: Mon, 3 May 2021 10:57:42 -0500 Message-Id: <20210503155748.1961781-22-jason@jlekstrand.net> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210503155748.1961781-1-jason@jlekstrand.net> References: <20210503155748.1961781-1-jason@jlekstrand.net> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Daniel Vetter , Jason Ekstrand Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" There's a big comment saying how useful it is but no one is using this for anything anymore. It was added in 2bfa996e031b ("drm/i915: Store owning file on the i915_address_space") and used for debugfs at the time as well as telling the difference between the global GTT and a PPGTT. In f6e8aa387171 ("drm/i915: Report the number of closed vma held by each context in debugfs") we removed one use of it by switching to a context walk and comparing with the VM in the context. Finally, VM stats for debugfs were entirely nuked in db80a1294c23 ("drm/i915/gem: Remove per-client stats from debugfs/i915_gem_objects") v2 (Daniel Vetter): - Delete a struct drm_i915_file_private pre-declaration - Add a comment to the commit message about history Signed-off-by: Jason Ekstrand Reviewed-by: Daniel Vetter --- drivers/gpu/drm/i915/gem/i915_gem_context.c | 9 --------- drivers/gpu/drm/i915/gt/intel_gtt.h | 11 ----------- drivers/gpu/drm/i915/selftests/mock_gtt.c | 1 - 3 files changed, 21 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c index d84d704534128..06d413eef01a3 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c @@ -1457,17 +1457,10 @@ static int gem_context_register(struct i915_gem_context *ctx, u32 *id) { struct drm_i915_private *i915 = ctx->i915; - struct i915_address_space *vm; int ret; ctx->file_priv = fpriv; - mutex_lock(&ctx->mutex); - vm = i915_gem_context_vm(ctx); - if (vm) - WRITE_ONCE(vm->file, fpriv); /* XXX */ - mutex_unlock(&ctx->mutex); - ctx->pid = get_task_pid(current, PIDTYPE_PID); snprintf(ctx->name, sizeof(ctx->name), "%s[%d]", current->comm, pid_nr(ctx->pid)); @@ -1566,8 +1559,6 @@ int i915_gem_vm_create_ioctl(struct drm_device *dev, void *data, if (IS_ERR(ppgtt)) return PTR_ERR(ppgtt); - ppgtt->vm.file = file_priv; - if (args->extensions) { err = i915_user_extensions(u64_to_user_ptr(args->extensions), NULL, 0, diff --git a/drivers/gpu/drm/i915/gt/intel_gtt.h b/drivers/gpu/drm/i915/gt/intel_gtt.h index e67e34e179131..7e62932b1b12e 100644 --- a/drivers/gpu/drm/i915/gt/intel_gtt.h +++ b/drivers/gpu/drm/i915/gt/intel_gtt.h @@ -140,7 +140,6 @@ typedef u64 gen8_pte_t; enum i915_cache_level; -struct drm_i915_file_private; struct drm_i915_gem_object; struct i915_fence_reg; struct i915_vma; @@ -217,16 +216,6 @@ struct i915_address_space { struct intel_gt *gt; struct drm_i915_private *i915; struct device *dma; - /* - * Every address space belongs to a struct file - except for the global - * GTT that is owned by the driver (and so @file is set to NULL). In - * principle, no information should leak from one context to another - * (or between files/processes etc) unless explicitly shared by the - * owner. Tracking the owner is important in order to free up per-file - * objects along with the file, to aide resource tracking, and to - * assign blame. - */ - struct drm_i915_file_private *file; u64 total; /* size addr space maps (ex. 2GB for ggtt) */ u64 reserved; /* size addr space reserved */ diff --git a/drivers/gpu/drm/i915/selftests/mock_gtt.c b/drivers/gpu/drm/i915/selftests/mock_gtt.c index 5c7ae40bba634..cc047ec594f93 100644 --- a/drivers/gpu/drm/i915/selftests/mock_gtt.c +++ b/drivers/gpu/drm/i915/selftests/mock_gtt.c @@ -73,7 +73,6 @@ struct i915_ppgtt *mock_ppgtt(struct drm_i915_private *i915, const char *name) ppgtt->vm.gt = &i915->gt; ppgtt->vm.i915 = i915; ppgtt->vm.total = round_down(U64_MAX, PAGE_SIZE); - ppgtt->vm.file = ERR_PTR(-ENODEV); ppgtt->vm.dma = i915->drm.dev; i915_address_space_init(&ppgtt->vm, VM_CLASS_PPGTT); From patchwork Mon May 3 15:57:43 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Ekstrand X-Patchwork-Id: 12236445 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 281A6C433ED for ; Mon, 3 May 2021 15:58:55 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id C2B3861164 for ; Mon, 3 May 2021 15:58:54 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C2B3861164 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=jlekstrand.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 4B5AC6E910; Mon, 3 May 2021 15:58:36 +0000 (UTC) Received: from mail-pf1-x42c.google.com (mail-pf1-x42c.google.com [IPv6:2607:f8b0:4864:20::42c]) by gabe.freedesktop.org (Postfix) with ESMTPS id C27B26E907 for ; Mon, 3 May 2021 15:58:32 +0000 (UTC) Received: by mail-pf1-x42c.google.com with SMTP id p4so4492277pfo.3 for ; Mon, 03 May 2021 08:58:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=jlekstrand-net.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=SLy9SgUTQThYtyGxYZZX/R/ZQt/dDklogq/E2r0bGJg=; b=daOh5jRONWSu3KTiLxbvADwuTBghWKUR8PGPnJ5Hb9iVGcILe0c0O0QX32qQc2lhxI MrGcbJe4Bo3g3OLD+babb5vsu1xmZXD1aQgaeBoFadMaLr/dyXGe9SMInsJzgtOdFIJP 2v04K8cd5Qde/tPX0Job4dASj2IffzfexNwEnGiYh3B7IN56Kj/neru2zBeoF0CHI2oA 1jOxP7SGgQrml6K/C5juSmXtRs4GFyZGmmPboE5DnFIKkc9MDusCZF2mVit2u7pq5mhG ShyGKrP5fkhFhyxJlMy3UImg7580rbsWuKKymDPNVYer10OkspwXgLbmlVvIXSGx8Y46 HhJg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=SLy9SgUTQThYtyGxYZZX/R/ZQt/dDklogq/E2r0bGJg=; b=ZIXpEHGKw2o9JEh4KFoKpfTgsj0ooaux/MFLUlX/me0COISnKcicwMtk/sHnNK6zqo gTumEIh4gGHdRarNFbsQN590B1mty+fOvC+z+pvBE7iWyl0Uc9EuydVsX93z09fHGh/E ujfQKYLugv4Wtl3aB+2mYdZLVtY/5tlKHyxCyxLwFN8FCO6PIYwfdmNhZAXbMecg8ndA fPzdpOjJoLK94HRS+C2h7lv9/bTr3dQKdS9Eh0OpD34WUAY1zpv+TcLxougYkg5eLsF/ i1dyMVH2qHVFHEcYVjK/u9hLGUyrLMPCzvu//fM82EpdvlsetnCnVarsmIBMeNDsTDfy dKNw== X-Gm-Message-State: AOAM5329re7hdSoSIgQ4kSMBkkT3Eo2Li5bv3uHi4c244TNWmusMhiEJ yEFt1DPVGWAE8npvDXm30H5h5ToqgeP+Fg== X-Google-Smtp-Source: ABdhPJwWYPCXt0U/M0AIuuokqK9WFKvUSIb6se3ry3H2o1j/ZeRGFenhnyTTRBaWRk9bbpC5WCbQGQ== X-Received: by 2002:a65:50c5:: with SMTP id s5mr10916611pgp.138.1620057512171; Mon, 03 May 2021 08:58:32 -0700 (PDT) Received: from omlet.com (jfdmzpr05-ext.jf.intel.com. [134.134.139.74]) by smtp.gmail.com with ESMTPSA id gf21sm9783296pjb.20.2021.05.03.08.58.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 May 2021 08:58:31 -0700 (PDT) From: Jason Ekstrand To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH 22/27] drm/i915/gem: Delay context creation Date: Mon, 3 May 2021 10:57:43 -0500 Message-Id: <20210503155748.1961781-23-jason@jlekstrand.net> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210503155748.1961781-1-jason@jlekstrand.net> References: <20210503155748.1961781-1-jason@jlekstrand.net> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jason Ekstrand Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" The current context uAPI allows for two methods of setting context parameters: SET_CONTEXT_PARAM and CONTEXT_CREATE_EXT_SETPARAM. The former is allowed to be called at any time while the later happens as part of GEM_CONTEXT_CREATE. Currently, everything settable via one is settable via the other. While some params are fairly simple and setting them on a live context is harmless such the context priority, others are far trickier such as the VM or the set of engines. In order to swap out the VM, for instance, we have to delay until all current in-flight work is complete, swap in the new VM, and then continue. This leads to a plethora of potential race conditions we'd really rather avoid. In previous patches, we added a i915_gem_proto_context struct which is capable of storing and tracking all such create parameters. This commit delays the creation of the actual context until after the client is done configuring it with SET_CONTEXT_PARAM. From the perspective of the client, it has the same u32 context ID the whole time. From the perspective of i915, however, it's an i915_gem_proto_context right up until the point where we attempt to do something which the proto-context can't handle at which point the real context gets created. This is accomplished via a little xarray dance. When GEM_CONTEXT_CREATE is called, we create a proto-context, reserve a slot in context_xa but leave it NULL, the proto-context in the corresponding slot in proto_context_xa. Then, whenever we go to look up a context, we first check context_xa. If it's there, we return the i915_gem_context and we're done. If it's not, we look in proto_context_xa and, if we find it there, we create the actual context and kill the proto-context. In order for this dance to work properly, everything which ever touches a proto-context is guarded by drm_i915_file_private::proto_context_lock, including context creation. Yes, this means context creation now takes a giant global lock but it can't really be helped and that should never be on any driver's fast-path anyway. Signed-off-by: Jason Ekstrand Reported-by: kernel test robot Reviewed-by: Daniel Vetter --- drivers/gpu/drm/i915/gem/i915_gem_context.c | 211 ++++++++++++++---- drivers/gpu/drm/i915/gem/i915_gem_context.h | 3 + .../gpu/drm/i915/gem/i915_gem_context_types.h | 54 +++++ .../gpu/drm/i915/gem/selftests/mock_context.c | 5 +- drivers/gpu/drm/i915/i915_drv.h | 24 +- 5 files changed, 239 insertions(+), 58 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c index 06d413eef01a3..f0e7ce6b979b4 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c @@ -292,6 +292,42 @@ proto_context_create(struct drm_i915_private *i915, unsigned int flags) return err; } +static int proto_context_register_locked(struct drm_i915_file_private *fpriv, + struct i915_gem_proto_context *pc, + u32 *id) +{ + int ret; + void *old; + + lockdep_assert_held(&fpriv->proto_context_lock); + + ret = xa_alloc(&fpriv->context_xa, id, NULL, xa_limit_32b, GFP_KERNEL); + if (ret) + return ret; + + old = xa_store(&fpriv->proto_context_xa, *id, pc, GFP_KERNEL); + if (xa_is_err(old)) { + xa_erase(&fpriv->context_xa, *id); + return xa_err(old); + } + GEM_BUG_ON(old); + + return 0; +} + +static int proto_context_register(struct drm_i915_file_private *fpriv, + struct i915_gem_proto_context *pc, + u32 *id) +{ + int ret; + + mutex_lock(&fpriv->proto_context_lock); + ret = proto_context_register_locked(fpriv, pc, id); + mutex_unlock(&fpriv->proto_context_lock); + + return ret; +} + static int set_proto_ctx_vm(struct drm_i915_file_private *fpriv, struct i915_gem_proto_context *pc, const struct drm_i915_gem_context_param *args) @@ -1452,12 +1488,12 @@ void i915_gem_init__contexts(struct drm_i915_private *i915) init_contexts(&i915->gem.contexts); } -static int gem_context_register(struct i915_gem_context *ctx, - struct drm_i915_file_private *fpriv, - u32 *id) +static void gem_context_register(struct i915_gem_context *ctx, + struct drm_i915_file_private *fpriv, + u32 id) { struct drm_i915_private *i915 = ctx->i915; - int ret; + void *old; ctx->file_priv = fpriv; @@ -1466,19 +1502,12 @@ static int gem_context_register(struct i915_gem_context *ctx, current->comm, pid_nr(ctx->pid)); /* And finally expose ourselves to userspace via the idr */ - ret = xa_alloc(&fpriv->context_xa, id, ctx, xa_limit_32b, GFP_KERNEL); - if (ret) - goto err_pid; + old = xa_store(&fpriv->context_xa, id, ctx, GFP_KERNEL); + GEM_BUG_ON(old); spin_lock(&i915->gem.contexts.lock); list_add_tail(&ctx->link, &i915->gem.contexts.list); spin_unlock(&i915->gem.contexts.lock); - - return 0; - -err_pid: - put_pid(fetch_and_zero(&ctx->pid)); - return ret; } int i915_gem_context_open(struct drm_i915_private *i915, @@ -1488,9 +1517,12 @@ int i915_gem_context_open(struct drm_i915_private *i915, struct i915_gem_proto_context *pc; struct i915_gem_context *ctx; int err; - u32 id; - xa_init_flags(&file_priv->context_xa, XA_FLAGS_ALLOC); + mutex_init(&file_priv->proto_context_lock); + xa_init_flags(&file_priv->proto_context_xa, XA_FLAGS_ALLOC); + + /* 0 reserved for the default context */ + xa_init_flags(&file_priv->context_xa, XA_FLAGS_ALLOC1); /* 0 reserved for invalid/unassigned ppgtt */ xa_init_flags(&file_priv->vm_xa, XA_FLAGS_ALLOC1); @@ -1508,28 +1540,31 @@ int i915_gem_context_open(struct drm_i915_private *i915, goto err; } - err = gem_context_register(ctx, file_priv, &id); - if (err < 0) - goto err_ctx; + gem_context_register(ctx, file_priv, 0); - GEM_BUG_ON(id); return 0; -err_ctx: - context_close(ctx); err: xa_destroy(&file_priv->vm_xa); xa_destroy(&file_priv->context_xa); + xa_destroy(&file_priv->proto_context_xa); + mutex_destroy(&file_priv->proto_context_lock); return err; } void i915_gem_context_close(struct drm_file *file) { struct drm_i915_file_private *file_priv = file->driver_priv; + struct i915_gem_proto_context *pc; struct i915_address_space *vm; struct i915_gem_context *ctx; unsigned long idx; + xa_for_each(&file_priv->proto_context_xa, idx, pc) + proto_context_close(pc); + xa_destroy(&file_priv->proto_context_xa); + mutex_destroy(&file_priv->proto_context_lock); + xa_for_each(&file_priv->context_xa, idx, ctx) context_close(ctx); xa_destroy(&file_priv->context_xa); @@ -2490,12 +2525,73 @@ static bool client_is_banned(struct drm_i915_file_private *file_priv) return atomic_read(&file_priv->ban_score) >= I915_CLIENT_SCORE_BANNED; } +static inline struct i915_gem_context * +__context_lookup(struct drm_i915_file_private *file_priv, u32 id) +{ + struct i915_gem_context *ctx; + + rcu_read_lock(); + ctx = xa_load(&file_priv->context_xa, id); + if (ctx && !kref_get_unless_zero(&ctx->ref)) + ctx = NULL; + rcu_read_unlock(); + + return ctx; +} + +struct i915_gem_context * +lazy_create_context_locked(struct drm_i915_file_private *file_priv, + struct i915_gem_proto_context *pc, u32 id) +{ + struct i915_gem_context *ctx; + void *old; + + lockdep_assert_held(&file_priv->proto_context_lock); + + ctx = i915_gem_create_context(file_priv->dev_priv, pc); + if (IS_ERR(ctx)) + return ctx; + + gem_context_register(ctx, file_priv, id); + + old = xa_erase(&file_priv->proto_context_xa, id); + GEM_BUG_ON(old != pc); + proto_context_close(pc); + + /* One for the xarray and one for the caller */ + return i915_gem_context_get(ctx); +} + +struct i915_gem_context * +i915_gem_context_lookup(struct drm_i915_file_private *file_priv, u32 id) +{ + struct i915_gem_proto_context *pc; + struct i915_gem_context *ctx; + + ctx = __context_lookup(file_priv, id); + if (ctx) + return ctx; + + mutex_lock(&file_priv->proto_context_lock); + /* Try one more time under the lock */ + ctx = __context_lookup(file_priv, id); + if (!ctx) { + pc = xa_load(&file_priv->proto_context_xa, id); + if (!pc) + ctx = ERR_PTR(-ENOENT); + else + ctx = lazy_create_context_locked(file_priv, pc, id); + } + mutex_unlock(&file_priv->proto_context_lock); + + return ctx; +} + int i915_gem_context_create_ioctl(struct drm_device *dev, void *data, struct drm_file *file) { struct drm_i915_private *i915 = to_i915(dev); struct drm_i915_gem_context_create_ext *args = data; - struct i915_gem_context *ctx; struct create_ext ext_data; int ret; u32 id; @@ -2527,28 +2623,21 @@ int i915_gem_context_create_ioctl(struct drm_device *dev, void *data, create_extensions, ARRAY_SIZE(create_extensions), &ext_data); - if (ret) { - proto_context_close(ext_data.pc); - return ret; - } + if (ret) + goto err_pc; } - ctx = i915_gem_create_context(i915, ext_data.pc); - proto_context_close(ext_data.pc); - if (IS_ERR(ctx)) - return PTR_ERR(ctx); - - ret = gem_context_register(ctx, ext_data.fpriv, &id); + ret = proto_context_register(ext_data.fpriv, ext_data.pc, &id); if (ret < 0) - goto err_ctx; + goto err_pc; args->ctx_id = id; drm_dbg(&i915->drm, "HW context %d created\n", args->ctx_id); return 0; -err_ctx: - context_close(ctx); +err_pc: + proto_context_close(ext_data.pc); return ret; } @@ -2557,6 +2646,7 @@ int i915_gem_context_destroy_ioctl(struct drm_device *dev, void *data, { struct drm_i915_gem_context_destroy *args = data; struct drm_i915_file_private *file_priv = file->driver_priv; + struct i915_gem_proto_context *pc; struct i915_gem_context *ctx; if (args->pad != 0) @@ -2565,11 +2655,21 @@ int i915_gem_context_destroy_ioctl(struct drm_device *dev, void *data, if (!args->ctx_id) return -ENOENT; + mutex_lock(&file_priv->proto_context_lock); ctx = xa_erase(&file_priv->context_xa, args->ctx_id); - if (!ctx) + pc = xa_erase(&file_priv->proto_context_xa, args->ctx_id); + mutex_unlock(&file_priv->proto_context_lock); + + if (!ctx && !pc) return -ENOENT; + GEM_WARN_ON(ctx && pc); + + if (pc) + proto_context_close(pc); + + if (ctx) + context_close(ctx); - context_close(ctx); return 0; } @@ -2702,16 +2802,41 @@ int i915_gem_context_setparam_ioctl(struct drm_device *dev, void *data, { struct drm_i915_file_private *file_priv = file->driver_priv; struct drm_i915_gem_context_param *args = data; + struct i915_gem_proto_context *pc; struct i915_gem_context *ctx; - int ret; + int ret = 0; - ctx = i915_gem_context_lookup(file_priv, args->ctx_id); - if (IS_ERR(ctx)) - return PTR_ERR(ctx); + ctx = __context_lookup(file_priv, args->ctx_id); + if (ctx) + goto set_ctx_param; - ret = ctx_setparam(file_priv, ctx, args); + mutex_lock(&file_priv->proto_context_lock); + ctx = __context_lookup(file_priv, args->ctx_id); + if (ctx) + goto unlock; + + pc = xa_load(&file_priv->proto_context_xa, args->ctx_id); + if (!pc) { + ret = -ENOENT; + goto unlock; + } + + /* FIXME: We should consider disallowing SET_CONTEXT_PARAM for most + * things on future platforms. Clients should be using + * CONTEXT_CREATE_EXT_PARAM instead. + */ + ret = set_proto_ctx_param(file_priv, pc, args); + +unlock: + mutex_unlock(&file_priv->proto_context_lock); + +set_ctx_param: + if (!ret && ctx) + ret = ctx_setparam(file_priv, ctx, args); + + if (ctx) + i915_gem_context_put(ctx); - i915_gem_context_put(ctx); return ret; } diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.h b/drivers/gpu/drm/i915/gem/i915_gem_context.h index b5c908f3f4f22..20411db84914a 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context.h +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.h @@ -133,6 +133,9 @@ int i915_gem_context_setparam_ioctl(struct drm_device *dev, void *data, int i915_gem_context_reset_stats_ioctl(struct drm_device *dev, void *data, struct drm_file *file); +struct i915_gem_context * +i915_gem_context_lookup(struct drm_i915_file_private *file_priv, u32 id); + static inline struct i915_gem_context * i915_gem_context_get(struct i915_gem_context *ctx) { diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context_types.h b/drivers/gpu/drm/i915/gem/i915_gem_context_types.h index 2ac341f805c8f..b673061f4f5ba 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context_types.h +++ b/drivers/gpu/drm/i915/gem/i915_gem_context_types.h @@ -122,6 +122,60 @@ struct i915_gem_proto_engine { * an i915_gem_context. This is used to gather parameters provided either * through creation flags or via SET_CONTEXT_PARAM so that, when we create * the final i915_gem_context, those parameters can be immutable. + * + * The context uAPI allows for two methods of setting context parameters: + * SET_CONTEXT_PARAM and CONTEXT_CREATE_EXT_SETPARAM. The former is + * allowed to be called at any time while the later happens as part of + * GEM_CONTEXT_CREATE. When these were initially added, Currently, + * everything settable via one is settable via the other. While some + * params are fairly simple and setting them on a live context is harmless + * such the context priority, others are far trickier such as the VM or the + * set of engines. To avoid some truly nasty race conditions, we don't + * allow setting the VM or the set of engines on live contexts. + * + * The way we dealt with this without breaking older userspace that sets + * the VM or engine set via SET_CONTEXT_PARAM is to delay the creation of + * the actual context until after the client is done configuring it with + * SET_CONTEXT_PARAM. From the perspective of the client, it has the same + * u32 context ID the whole time. From the perspective of i915, however, + * it's an i915_gem_proto_context right up until the point where we attempt + * to do something which the proto-context can't handle at which point the + * real context gets created. + * + * This is accomplished via a little xarray dance. When GEM_CONTEXT_CREATE + * is called, we create a proto-context, reserve a slot in context_xa but + * leave it NULL, the proto-context in the corresponding slot in + * proto_context_xa. Then, whenever we go to look up a context, we first + * check context_xa. If it's there, we return the i915_gem_context and + * we're done. If it's not, we look in proto_context_xa and, if we find it + * there, we create the actual context and kill the proto-context. + * + * At the time we made this change (April, 2021), we did a fairly complete + * audit of existing userspace to ensure this wouldn't break anything: + * + * - Mesa/i965 didn't use the engines or VM APIs at all + * + * - Mesa/ANV used the engines API but via CONTEXT_CREATE_EXT_SETPARAM and + * didn't use the VM API. + * + * - Mesa/iris didn't use the engines or VM APIs at all + * + * - The open-source compute-runtime didn't yet use the engines API but + * did use the VM API via SET_CONTEXT_PARAM. However, CONTEXT_SETPARAM + * was always the second ioctl on that context, immediately following + * GEM_CONTEXT_CREATE. + * + * - The media driver sets engines and bonding/balancing via + * SET_CONTEXT_PARAM. However, CONTEXT_SETPARAM to set the VM was + * always the second ioctl on that context, immediately following + * GEM_CONTEXT_CREATE and setting engines immediately followed that. + * + * In order for this dance to work properly, any modification to an + * i915_gem_proto_context that is exposed to the client via + * drm_i915_file_private::proto_context_xa must be guarded by + * drm_i915_file_private::proto_context_lock. The exception is when a + * proto-context has not yet been exposed such as when handling + * CONTEXT_CREATE_SET_PARAM during GEM_CONTEXT_CREATE. */ struct i915_gem_proto_context { /** @vm: See i915_gem_context::vm */ diff --git a/drivers/gpu/drm/i915/gem/selftests/mock_context.c b/drivers/gpu/drm/i915/gem/selftests/mock_context.c index cbeefd060e97b..61aaac4a334cf 100644 --- a/drivers/gpu/drm/i915/gem/selftests/mock_context.c +++ b/drivers/gpu/drm/i915/gem/selftests/mock_context.c @@ -81,6 +81,7 @@ void mock_init_contexts(struct drm_i915_private *i915) struct i915_gem_context * live_context(struct drm_i915_private *i915, struct file *file) { + struct drm_i915_file_private *fpriv = to_drm_file(file)->driver_priv; struct i915_gem_proto_context *pc; struct i915_gem_context *ctx; int err; @@ -97,10 +98,12 @@ live_context(struct drm_i915_private *i915, struct file *file) i915_gem_context_set_no_error_capture(ctx); - err = gem_context_register(ctx, to_drm_file(file)->driver_priv, &id); + err = xa_alloc(&fpriv->context_xa, &id, NULL, xa_limit_32b, GFP_KERNEL); if (err < 0) goto err_ctx; + gem_context_register(ctx, fpriv, id); + return ctx; err_ctx: diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 004ed0e59c999..2b323b986dbab 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -200,6 +200,16 @@ struct drm_i915_file_private { struct rcu_head rcu; }; + /** @proto_context_lock: Guards all i915_gem_proto_context operations + * + * See i915_gem_proto_context. + */ + struct mutex proto_context_lock; + + /** @proto_context_xa: xarray of i915_gem_proto_context */ + struct xarray proto_context_xa; + + /** @context_xa: xarray of fully created i915_gem_context */ struct xarray context_xa; struct xarray vm_xa; @@ -1840,20 +1850,6 @@ struct drm_gem_object *i915_gem_prime_import(struct drm_device *dev, struct dma_buf *i915_gem_prime_export(struct drm_gem_object *gem_obj, int flags); -static inline struct i915_gem_context * -i915_gem_context_lookup(struct drm_i915_file_private *file_priv, u32 id) -{ - struct i915_gem_context *ctx; - - rcu_read_lock(); - ctx = xa_load(&file_priv->context_xa, id); - if (ctx && !kref_get_unless_zero(&ctx->ref)) - ctx = NULL; - rcu_read_unlock(); - - return ctx ? ctx : ERR_PTR(-ENOENT); -} - /* i915_gem_evict.c */ int __must_check i915_gem_evict_something(struct i915_address_space *vm, u64 min_size, u64 alignment, From patchwork Mon May 3 15:57:44 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Ekstrand X-Patchwork-Id: 12236447 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DEF42C43470 for ; Mon, 3 May 2021 15:58:56 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 8A30C61164 for ; Mon, 3 May 2021 15:58:56 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8A30C61164 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=jlekstrand.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 28B2C6E911; Mon, 3 May 2021 15:58:38 +0000 (UTC) Received: from mail-pl1-x636.google.com (mail-pl1-x636.google.com [IPv6:2607:f8b0:4864:20::636]) by gabe.freedesktop.org (Postfix) with ESMTPS id 3F7556E907 for ; Mon, 3 May 2021 15:58:34 +0000 (UTC) Received: by mail-pl1-x636.google.com with SMTP id p17so3046589plf.12 for ; Mon, 03 May 2021 08:58:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=jlekstrand-net.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=PmgrEnC5Ml2/iw2UL4v7o4g8KjsLkL9T8NjKbQL3HD4=; b=jKQrrKJuF0IvPceRUPEMjme8ZNDXsyLl8aNUfraCFOucGtBruhrXsPVLWXo2w+miDL 6nOlW33hIsXZFxa0U4mVhsJVOu79xlDD4vh1x/253mKYbUJm5wvbb2IphcQEHIpLHPUG gwfXZ4ioQ22pk2Jp02fqZ3iCnCeE4Dhh9Csmo9PJV6ghG3pYXRyMpB7qkpjpuYBpwbzL e7jPrrI9NZ4fKmG+5NxDWsGNrYcLUKbAoc1ePZE1OrcrfLLgH+WirS35KnzTm4GKxM0T k0TZQC4olCT8EwUJaOMo9/3WPPsWtG+GSl4CZoU3Nc7p+P0B2z9SUByoQMfw6czzIsYs vJiA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=PmgrEnC5Ml2/iw2UL4v7o4g8KjsLkL9T8NjKbQL3HD4=; b=ESxzX7s+nXlvElnjo63N/CcW9EsogHdbk68FHhggYh+wp7RXvcVprfOK1vyfREVDEk bd9UR3CnlPOgsBfydvdRuaedCnp+oefPHRmMHqYhdpgIl+KyWH8qB+GyLYrbuuvM0Z9v 2GAxZ8O3Jgw4pcYwuYcmCzRuvrtR9uQuyk0m9JHkWbveURaZuABwpctpk5U7zm9+ehm9 qzssV//pGxdvv4JkgqnG4hxtMy1WTsSWi15XnFLidtinzh61qwk1EQ8Ehtsvp7h+WF/D lZiOWiRTptGiet1yE/T3C4TzCWicsDdRufZevfcuIJTUXF/5Ccw7VMho06wTkWDmzqOr WP5w== X-Gm-Message-State: AOAM5315KWKVyh5DW0Wysf7nDAetyaqUib/fWMWCqYptyB/jsBNB9daB tqsrnayi9YwHMiM3sZ81ohotYpLDbybaAA== X-Google-Smtp-Source: ABdhPJwzUvx4fFttrT+RQwkSI/6GUQgToF03dOokTNeYl84ORKI+67rerBRnncbuidWJcE6whr0YbQ== X-Received: by 2002:a17:90b:182:: with SMTP id t2mr21666241pjs.138.1620057513696; Mon, 03 May 2021 08:58:33 -0700 (PDT) Received: from omlet.com (jfdmzpr05-ext.jf.intel.com. [134.134.139.74]) by smtp.gmail.com with ESMTPSA id gf21sm9783296pjb.20.2021.05.03.08.58.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 May 2021 08:58:33 -0700 (PDT) From: Jason Ekstrand To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH 23/27] drm/i915/gem: Don't allow changing the VM on running contexts Date: Mon, 3 May 2021 10:57:44 -0500 Message-Id: <20210503155748.1961781-24-jason@jlekstrand.net> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210503155748.1961781-1-jason@jlekstrand.net> References: <20210503155748.1961781-1-jason@jlekstrand.net> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jason Ekstrand Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Signed-off-by: Jason Ekstrand Reported-by: kernel test robot Reviewed-by: Daniel Vetter --- drivers/gpu/drm/i915/gem/i915_gem_context.c | 267 ------------------ .../gpu/drm/i915/gem/i915_gem_context_types.h | 2 +- .../drm/i915/gem/selftests/i915_gem_context.c | 119 -------- .../drm/i915/selftests/i915_mock_selftests.h | 1 - 4 files changed, 1 insertion(+), 388 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c index f0e7ce6b979b4..ad6e98d8a4fbd 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c @@ -1637,121 +1637,6 @@ int i915_gem_vm_destroy_ioctl(struct drm_device *dev, void *data, return 0; } -struct context_barrier_task { - struct i915_active base; - void (*task)(void *data); - void *data; -}; - -__i915_active_call -static void cb_retire(struct i915_active *base) -{ - struct context_barrier_task *cb = container_of(base, typeof(*cb), base); - - if (cb->task) - cb->task(cb->data); - - i915_active_fini(&cb->base); - kfree(cb); -} - -I915_SELFTEST_DECLARE(static intel_engine_mask_t context_barrier_inject_fault); -static int context_barrier_task(struct i915_gem_context *ctx, - intel_engine_mask_t engines, - bool (*skip)(struct intel_context *ce, void *data), - int (*pin)(struct intel_context *ce, struct i915_gem_ww_ctx *ww, void *data), - int (*emit)(struct i915_request *rq, void *data), - void (*task)(void *data), - void *data) -{ - struct context_barrier_task *cb; - struct i915_gem_engines_iter it; - struct i915_gem_engines *e; - struct i915_gem_ww_ctx ww; - struct intel_context *ce; - int err = 0; - - GEM_BUG_ON(!task); - - cb = kmalloc(sizeof(*cb), GFP_KERNEL); - if (!cb) - return -ENOMEM; - - i915_active_init(&cb->base, NULL, cb_retire); - err = i915_active_acquire(&cb->base); - if (err) { - kfree(cb); - return err; - } - - e = __context_engines_await(ctx, NULL); - if (!e) { - i915_active_release(&cb->base); - return -ENOENT; - } - - for_each_gem_engine(ce, e, it) { - struct i915_request *rq; - - if (I915_SELFTEST_ONLY(context_barrier_inject_fault & - ce->engine->mask)) { - err = -ENXIO; - break; - } - - if (!(ce->engine->mask & engines)) - continue; - - if (skip && skip(ce, data)) - continue; - - i915_gem_ww_ctx_init(&ww, true); -retry: - err = intel_context_pin_ww(ce, &ww); - if (err) - goto err; - - if (pin) - err = pin(ce, &ww, data); - if (err) - goto err_unpin; - - rq = i915_request_create(ce); - if (IS_ERR(rq)) { - err = PTR_ERR(rq); - goto err_unpin; - } - - err = 0; - if (emit) - err = emit(rq, data); - if (err == 0) - err = i915_active_add_request(&cb->base, rq); - - i915_request_add(rq); -err_unpin: - intel_context_unpin(ce); -err: - if (err == -EDEADLK) { - err = i915_gem_ww_ctx_backoff(&ww); - if (!err) - goto retry; - } - i915_gem_ww_ctx_fini(&ww); - - if (err) - break; - } - i915_sw_fence_complete(&e->fence); - - cb->task = err ? NULL : task; /* caller needs to unwind instead */ - cb->data = data; - - i915_active_release(&cb->base); - - return err; -} - static int get_ppgtt(struct drm_i915_file_private *file_priv, struct i915_gem_context *ctx, struct drm_i915_gem_context_param *args) @@ -1784,154 +1669,6 @@ static int get_ppgtt(struct drm_i915_file_private *file_priv, return err; } -static void set_ppgtt_barrier(void *data) -{ - struct i915_address_space *old = data; - - if (INTEL_GEN(old->i915) < 8) - gen6_ppgtt_unpin_all(i915_vm_to_ppgtt(old)); - - i915_vm_close(old); -} - -static int pin_ppgtt_update(struct intel_context *ce, struct i915_gem_ww_ctx *ww, void *data) -{ - struct i915_address_space *vm = ce->vm; - - if (!HAS_LOGICAL_RING_CONTEXTS(vm->i915)) - /* ppGTT is not part of the legacy context image */ - return gen6_ppgtt_pin(i915_vm_to_ppgtt(vm), ww); - - return 0; -} - -static int emit_ppgtt_update(struct i915_request *rq, void *data) -{ - struct i915_address_space *vm = rq->context->vm; - struct intel_engine_cs *engine = rq->engine; - u32 base = engine->mmio_base; - u32 *cs; - int i; - - if (i915_vm_is_4lvl(vm)) { - struct i915_ppgtt *ppgtt = i915_vm_to_ppgtt(vm); - const dma_addr_t pd_daddr = px_dma(ppgtt->pd); - - cs = intel_ring_begin(rq, 6); - if (IS_ERR(cs)) - return PTR_ERR(cs); - - *cs++ = MI_LOAD_REGISTER_IMM(2); - - *cs++ = i915_mmio_reg_offset(GEN8_RING_PDP_UDW(base, 0)); - *cs++ = upper_32_bits(pd_daddr); - *cs++ = i915_mmio_reg_offset(GEN8_RING_PDP_LDW(base, 0)); - *cs++ = lower_32_bits(pd_daddr); - - *cs++ = MI_NOOP; - intel_ring_advance(rq, cs); - } else if (HAS_LOGICAL_RING_CONTEXTS(engine->i915)) { - struct i915_ppgtt *ppgtt = i915_vm_to_ppgtt(vm); - int err; - - /* Magic required to prevent forcewake errors! */ - err = engine->emit_flush(rq, EMIT_INVALIDATE); - if (err) - return err; - - cs = intel_ring_begin(rq, 4 * GEN8_3LVL_PDPES + 2); - if (IS_ERR(cs)) - return PTR_ERR(cs); - - *cs++ = MI_LOAD_REGISTER_IMM(2 * GEN8_3LVL_PDPES) | MI_LRI_FORCE_POSTED; - for (i = GEN8_3LVL_PDPES; i--; ) { - const dma_addr_t pd_daddr = i915_page_dir_dma_addr(ppgtt, i); - - *cs++ = i915_mmio_reg_offset(GEN8_RING_PDP_UDW(base, i)); - *cs++ = upper_32_bits(pd_daddr); - *cs++ = i915_mmio_reg_offset(GEN8_RING_PDP_LDW(base, i)); - *cs++ = lower_32_bits(pd_daddr); - } - *cs++ = MI_NOOP; - intel_ring_advance(rq, cs); - } - - return 0; -} - -static bool skip_ppgtt_update(struct intel_context *ce, void *data) -{ - if (HAS_LOGICAL_RING_CONTEXTS(ce->engine->i915)) - return !ce->state; - else - return !atomic_read(&ce->pin_count); -} - -static int set_ppgtt(struct drm_i915_file_private *file_priv, - struct i915_gem_context *ctx, - struct drm_i915_gem_context_param *args) -{ - struct i915_address_space *vm, *old; - int err; - - if (args->size) - return -EINVAL; - - if (!rcu_access_pointer(ctx->vm)) - return -ENODEV; - - if (upper_32_bits(args->value)) - return -ENOENT; - - rcu_read_lock(); - vm = xa_load(&file_priv->vm_xa, args->value); - if (vm && !kref_get_unless_zero(&vm->ref)) - vm = NULL; - rcu_read_unlock(); - if (!vm) - return -ENOENT; - - err = mutex_lock_interruptible(&ctx->mutex); - if (err) - goto out; - - if (i915_gem_context_is_closed(ctx)) { - err = -ENOENT; - goto unlock; - } - - if (vm == rcu_access_pointer(ctx->vm)) - goto unlock; - - old = __set_ppgtt(ctx, vm); - - /* Teardown the existing obj:vma cache, it will have to be rebuilt. */ - lut_close(ctx); - - /* - * We need to flush any requests using the current ppgtt before - * we release it as the requests do not hold a reference themselves, - * only indirectly through the context. - */ - err = context_barrier_task(ctx, ALL_ENGINES, - skip_ppgtt_update, - pin_ppgtt_update, - emit_ppgtt_update, - set_ppgtt_barrier, - old); - if (err) { - i915_vm_close(__set_ppgtt(ctx, old)); - i915_vm_close(old); - lut_close(ctx); /* force a rebuild of the old obj:vma cache */ - } - -unlock: - mutex_unlock(&ctx->mutex); -out: - i915_vm_put(vm); - return err; -} - int i915_gem_user_to_context_sseu(struct intel_gt *gt, const struct drm_i915_gem_context_param_sseu *user, @@ -2468,10 +2205,6 @@ static int ctx_setparam(struct drm_i915_file_private *fpriv, ret = set_sseu(ctx, args); break; - case I915_CONTEXT_PARAM_VM: - ret = set_ppgtt(fpriv, ctx, args); - break; - case I915_CONTEXT_PARAM_ENGINES: ret = set_engines(ctx, args); break; diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context_types.h b/drivers/gpu/drm/i915/gem/i915_gem_context_types.h index b673061f4f5ba..84c821cca1739 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context_types.h +++ b/drivers/gpu/drm/i915/gem/i915_gem_context_types.h @@ -262,7 +262,7 @@ struct i915_gem_context { * In other modes, this is a NULL pointer with the expectation that * the caller uses the shared global GTT. */ - struct i915_address_space __rcu *vm; + struct i915_address_space *vm; /** * @pid: process id of creator diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c index 5fef592390cb5..16ff64ab34a1b 100644 --- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c @@ -1882,125 +1882,6 @@ static int igt_vm_isolation(void *arg) return err; } -static bool skip_unused_engines(struct intel_context *ce, void *data) -{ - return !ce->state; -} - -static void mock_barrier_task(void *data) -{ - unsigned int *counter = data; - - ++*counter; -} - -static int mock_context_barrier(void *arg) -{ -#undef pr_fmt -#define pr_fmt(x) "context_barrier_task():" # x - struct drm_i915_private *i915 = arg; - struct i915_gem_context *ctx; - struct i915_request *rq; - unsigned int counter; - int err; - - /* - * The context barrier provides us with a callback after it emits - * a request; useful for retiring old state after loading new. - */ - - ctx = mock_context(i915, "mock"); - if (!ctx) - return -ENOMEM; - - counter = 0; - err = context_barrier_task(ctx, 0, NULL, NULL, NULL, - mock_barrier_task, &counter); - if (err) { - pr_err("Failed at line %d, err=%d\n", __LINE__, err); - goto out; - } - if (counter == 0) { - pr_err("Did not retire immediately with 0 engines\n"); - err = -EINVAL; - goto out; - } - - counter = 0; - err = context_barrier_task(ctx, ALL_ENGINES, skip_unused_engines, - NULL, NULL, mock_barrier_task, &counter); - if (err) { - pr_err("Failed at line %d, err=%d\n", __LINE__, err); - goto out; - } - if (counter == 0) { - pr_err("Did not retire immediately for all unused engines\n"); - err = -EINVAL; - goto out; - } - - rq = igt_request_alloc(ctx, i915->gt.engine[RCS0]); - if (IS_ERR(rq)) { - pr_err("Request allocation failed!\n"); - goto out; - } - i915_request_add(rq); - - counter = 0; - context_barrier_inject_fault = BIT(RCS0); - err = context_barrier_task(ctx, ALL_ENGINES, NULL, NULL, NULL, - mock_barrier_task, &counter); - context_barrier_inject_fault = 0; - if (err == -ENXIO) - err = 0; - else - pr_err("Did not hit fault injection!\n"); - if (counter != 0) { - pr_err("Invoked callback on error!\n"); - err = -EIO; - } - if (err) - goto out; - - counter = 0; - err = context_barrier_task(ctx, ALL_ENGINES, skip_unused_engines, - NULL, NULL, mock_barrier_task, &counter); - if (err) { - pr_err("Failed at line %d, err=%d\n", __LINE__, err); - goto out; - } - mock_device_flush(i915); - if (counter == 0) { - pr_err("Did not retire on each active engines\n"); - err = -EINVAL; - goto out; - } - -out: - mock_context_close(ctx); - return err; -#undef pr_fmt -#define pr_fmt(x) x -} - -int i915_gem_context_mock_selftests(void) -{ - static const struct i915_subtest tests[] = { - SUBTEST(mock_context_barrier), - }; - struct drm_i915_private *i915; - int err; - - i915 = mock_gem_device(); - if (!i915) - return -ENOMEM; - - err = i915_subtests(tests, i915); - - mock_destroy_device(i915); - return err; -} - int i915_gem_context_live_selftests(struct drm_i915_private *i915) { static const struct i915_subtest tests[] = { diff --git a/drivers/gpu/drm/i915/selftests/i915_mock_selftests.h b/drivers/gpu/drm/i915/selftests/i915_mock_selftests.h index 3db34d3eea58a..52aa91716dc1f 100644 --- a/drivers/gpu/drm/i915/selftests/i915_mock_selftests.h +++ b/drivers/gpu/drm/i915/selftests/i915_mock_selftests.h @@ -32,6 +32,5 @@ selftest(vma, i915_vma_mock_selftests) selftest(evict, i915_gem_evict_mock_selftests) selftest(gtt, i915_gem_gtt_mock_selftests) selftest(hugepages, i915_gem_huge_page_mock_selftests) -selftest(contexts, i915_gem_context_mock_selftests) selftest(buddy, i915_buddy_mock_selftests) selftest(memory_region, intel_memory_region_mock_selftests) From patchwork Mon May 3 15:57:45 2021 Content-Type: text/plain; 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[134.134.139.74]) by smtp.gmail.com with ESMTPSA id gf21sm9783296pjb.20.2021.05.03.08.58.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 May 2021 08:58:34 -0700 (PDT) From: Jason Ekstrand To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH 24/27] drm/i915/gem: Don't allow changing the engine set on running contexts Date: Mon, 3 May 2021 10:57:45 -0500 Message-Id: <20210503155748.1961781-25-jason@jlekstrand.net> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210503155748.1961781-1-jason@jlekstrand.net> References: <20210503155748.1961781-1-jason@jlekstrand.net> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jason Ekstrand Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Signed-off-by: Jason Ekstrand Reviewed-by: Daniel Vetter --- drivers/gpu/drm/i915/gem/i915_gem_context.c | 304 -------------------- 1 file changed, 304 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c index ad6e98d8a4fbd..6e5828fe1a792 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c @@ -1823,306 +1823,6 @@ static int set_sseu(struct i915_gem_context *ctx, return ret; } -struct set_engines { - struct i915_gem_context *ctx; - struct i915_gem_engines *engines; -}; - -static int -set_engines__load_balance(struct i915_user_extension __user *base, void *data) -{ - struct i915_context_engines_load_balance __user *ext = - container_of_user(base, typeof(*ext), base); - const struct set_engines *set = data; - struct drm_i915_private *i915 = set->ctx->i915; - struct intel_engine_cs *stack[16]; - struct intel_engine_cs **siblings; - struct intel_context *ce; - struct intel_sseu null_sseu = {}; - u16 num_siblings, idx; - unsigned int n; - int err; - - if (!HAS_EXECLISTS(i915)) - return -ENODEV; - - if (intel_uc_uses_guc_submission(&i915->gt.uc)) - return -ENODEV; /* not implement yet */ - - if (get_user(idx, &ext->engine_index)) - return -EFAULT; - - if (idx >= set->engines->num_engines) { - drm_dbg(&i915->drm, "Invalid placement value, %d >= %d\n", - idx, set->engines->num_engines); - return -EINVAL; - } - - idx = array_index_nospec(idx, set->engines->num_engines); - if (set->engines->engines[idx]) { - drm_dbg(&i915->drm, - "Invalid placement[%d], already occupied\n", idx); - return -EEXIST; - } - - if (get_user(num_siblings, &ext->num_siblings)) - return -EFAULT; - - err = check_user_mbz(&ext->flags); - if (err) - return err; - - err = check_user_mbz(&ext->mbz64); - if (err) - return err; - - siblings = stack; - if (num_siblings > ARRAY_SIZE(stack)) { - siblings = kmalloc_array(num_siblings, - sizeof(*siblings), - GFP_KERNEL); - if (!siblings) - return -ENOMEM; - } - - for (n = 0; n < num_siblings; n++) { - struct i915_engine_class_instance ci; - - if (copy_from_user(&ci, &ext->engines[n], sizeof(ci))) { - err = -EFAULT; - goto out_siblings; - } - - siblings[n] = intel_engine_lookup_user(i915, - ci.engine_class, - ci.engine_instance); - if (!siblings[n]) { - drm_dbg(&i915->drm, - "Invalid sibling[%d]: { class:%d, inst:%d }\n", - n, ci.engine_class, ci.engine_instance); - err = -EINVAL; - goto out_siblings; - } - } - - ce = intel_execlists_create_virtual(siblings, n); - if (IS_ERR(ce)) { - err = PTR_ERR(ce); - goto out_siblings; - } - - intel_context_set_gem(ce, set->ctx, null_sseu); - - if (cmpxchg(&set->engines->engines[idx], NULL, ce)) { - intel_context_put(ce); - err = -EEXIST; - goto out_siblings; - } - -out_siblings: - if (siblings != stack) - kfree(siblings); - - return err; -} - -static int -set_engines__bond(struct i915_user_extension __user *base, void *data) -{ - struct i915_context_engines_bond __user *ext = - container_of_user(base, typeof(*ext), base); - const struct set_engines *set = data; - struct drm_i915_private *i915 = set->ctx->i915; - struct i915_engine_class_instance ci; - struct intel_engine_cs *virtual; - struct intel_engine_cs *master; - u16 idx, num_bonds; - int err, n; - - if (get_user(idx, &ext->virtual_index)) - return -EFAULT; - - if (idx >= set->engines->num_engines) { - drm_dbg(&i915->drm, - "Invalid index for virtual engine: %d >= %d\n", - idx, set->engines->num_engines); - return -EINVAL; - } - - idx = array_index_nospec(idx, set->engines->num_engines); - if (!set->engines->engines[idx]) { - drm_dbg(&i915->drm, "Invalid engine at %d\n", idx); - return -EINVAL; - } - virtual = set->engines->engines[idx]->engine; - - if (intel_engine_is_virtual(virtual)) { - drm_dbg(&i915->drm, - "Bonding with virtual engines not allowed\n"); - return -EINVAL; - } - - err = check_user_mbz(&ext->flags); - if (err) - return err; - - for (n = 0; n < ARRAY_SIZE(ext->mbz64); n++) { - err = check_user_mbz(&ext->mbz64[n]); - if (err) - return err; - } - - if (copy_from_user(&ci, &ext->master, sizeof(ci))) - return -EFAULT; - - master = intel_engine_lookup_user(i915, - ci.engine_class, ci.engine_instance); - if (!master) { - drm_dbg(&i915->drm, - "Unrecognised master engine: { class:%u, instance:%u }\n", - ci.engine_class, ci.engine_instance); - return -EINVAL; - } - - if (get_user(num_bonds, &ext->num_bonds)) - return -EFAULT; - - for (n = 0; n < num_bonds; n++) { - struct intel_engine_cs *bond; - - if (copy_from_user(&ci, &ext->engines[n], sizeof(ci))) - return -EFAULT; - - bond = intel_engine_lookup_user(i915, - ci.engine_class, - ci.engine_instance); - if (!bond) { - drm_dbg(&i915->drm, - "Unrecognised engine[%d] for bonding: { class:%d, instance: %d }\n", - n, ci.engine_class, ci.engine_instance); - return -EINVAL; - } - } - - return 0; -} - -static const i915_user_extension_fn set_engines__extensions[] = { - [I915_CONTEXT_ENGINES_EXT_LOAD_BALANCE] = set_engines__load_balance, - [I915_CONTEXT_ENGINES_EXT_BOND] = set_engines__bond, -}; - -static int -set_engines(struct i915_gem_context *ctx, - const struct drm_i915_gem_context_param *args) -{ - struct drm_i915_private *i915 = ctx->i915; - struct i915_context_param_engines __user *user = - u64_to_user_ptr(args->value); - struct intel_sseu null_sseu = {}; - struct set_engines set = { .ctx = ctx }; - unsigned int num_engines, n; - u64 extensions; - int err; - - if (!args->size) { /* switch back to legacy user_ring_map */ - if (!i915_gem_context_user_engines(ctx)) - return 0; - - set.engines = default_engines(ctx, null_sseu); - if (IS_ERR(set.engines)) - return PTR_ERR(set.engines); - - goto replace; - } - - BUILD_BUG_ON(!IS_ALIGNED(sizeof(*user), sizeof(*user->engines))); - if (args->size < sizeof(*user) || - !IS_ALIGNED(args->size, sizeof(*user->engines))) { - drm_dbg(&i915->drm, "Invalid size for engine array: %d\n", - args->size); - return -EINVAL; - } - - num_engines = (args->size - sizeof(*user)) / sizeof(*user->engines); - /* RING_MASK has no shift so we can use it directly here */ - if (num_engines > I915_EXEC_RING_MASK + 1) - return -EINVAL; - - set.engines = alloc_engines(num_engines); - if (!set.engines) - return -ENOMEM; - - for (n = 0; n < num_engines; n++) { - struct i915_engine_class_instance ci; - struct intel_engine_cs *engine; - struct intel_context *ce; - - if (copy_from_user(&ci, &user->engines[n], sizeof(ci))) { - __free_engines(set.engines, n); - return -EFAULT; - } - - if (ci.engine_class == (u16)I915_ENGINE_CLASS_INVALID && - ci.engine_instance == (u16)I915_ENGINE_CLASS_INVALID_NONE) { - set.engines->engines[n] = NULL; - continue; - } - - engine = intel_engine_lookup_user(ctx->i915, - ci.engine_class, - ci.engine_instance); - if (!engine) { - drm_dbg(&i915->drm, - "Invalid engine[%d]: { class:%d, instance:%d }\n", - n, ci.engine_class, ci.engine_instance); - __free_engines(set.engines, n); - return -ENOENT; - } - - ce = intel_context_create(engine); - if (IS_ERR(ce)) { - __free_engines(set.engines, n); - return PTR_ERR(ce); - } - - intel_context_set_gem(ce, ctx, null_sseu); - - set.engines->engines[n] = ce; - } - set.engines->num_engines = num_engines; - - err = -EFAULT; - if (!get_user(extensions, &user->extensions)) - err = i915_user_extensions(u64_to_user_ptr(extensions), - set_engines__extensions, - ARRAY_SIZE(set_engines__extensions), - &set); - if (err) { - free_engines(set.engines); - return err; - } - -replace: - mutex_lock(&ctx->engines_mutex); - if (i915_gem_context_is_closed(ctx)) { - mutex_unlock(&ctx->engines_mutex); - free_engines(set.engines); - return -ENOENT; - } - if (args->size) - i915_gem_context_set_user_engines(ctx); - else - i915_gem_context_clear_user_engines(ctx); - set.engines = rcu_replace_pointer(ctx->engines, set.engines, 1); - mutex_unlock(&ctx->engines_mutex); - - /* Keep track of old engine sets for kill_context() */ - engines_idle_release(ctx, set.engines); - - return 0; -} - static int set_persistence(struct i915_gem_context *ctx, const struct drm_i915_gem_context_param *args) @@ -2205,10 +1905,6 @@ static int ctx_setparam(struct drm_i915_file_private *fpriv, ret = set_sseu(ctx, args); break; - case I915_CONTEXT_PARAM_ENGINES: - ret = set_engines(ctx, args); - break; - case I915_CONTEXT_PARAM_PERSISTENCE: ret = set_persistence(ctx, args); break; From patchwork Mon May 3 15:57:46 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Ekstrand X-Patchwork-Id: 12236451 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 44F2CC433ED for ; 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[134.134.139.74]) by smtp.gmail.com with ESMTPSA id gf21sm9783296pjb.20.2021.05.03.08.58.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 May 2021 08:58:36 -0700 (PDT) From: Jason Ekstrand To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH 25/27] drm/i915/selftests: Take a VM in kernel_context() Date: Mon, 3 May 2021 10:57:46 -0500 Message-Id: <20210503155748.1961781-26-jason@jlekstrand.net> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210503155748.1961781-1-jason@jlekstrand.net> References: <20210503155748.1961781-1-jason@jlekstrand.net> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jason Ekstrand Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" This better models where we want to go with contexts in general where things like the VM and engine set are create parameters instead of being set after the fact. Signed-off-by: Jason Ekstrand Reviewed-by: Daniel Vetter --- .../drm/i915/gem/selftests/i915_gem_context.c | 4 ++-- .../gpu/drm/i915/gem/selftests/mock_context.c | 9 ++++++++- .../gpu/drm/i915/gem/selftests/mock_context.h | 4 +++- drivers/gpu/drm/i915/gt/selftest_execlists.c | 20 +++++++++---------- drivers/gpu/drm/i915/gt/selftest_hangcheck.c | 2 +- 5 files changed, 24 insertions(+), 15 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c index 16ff64ab34a1b..76029d7143f6c 100644 --- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c @@ -680,7 +680,7 @@ static int igt_ctx_exec(void *arg) struct i915_gem_context *ctx; struct intel_context *ce; - ctx = kernel_context(i915); + ctx = kernel_context(i915, NULL); if (IS_ERR(ctx)) { err = PTR_ERR(ctx); goto out_file; @@ -813,7 +813,7 @@ static int igt_shared_ctx_exec(void *arg) struct i915_gem_context *ctx; struct intel_context *ce; - ctx = kernel_context(i915); + ctx = kernel_context(i915, NULL); if (IS_ERR(ctx)) { err = PTR_ERR(ctx); goto out_test; diff --git a/drivers/gpu/drm/i915/gem/selftests/mock_context.c b/drivers/gpu/drm/i915/gem/selftests/mock_context.c index 61aaac4a334cf..500ef27ba4771 100644 --- a/drivers/gpu/drm/i915/gem/selftests/mock_context.c +++ b/drivers/gpu/drm/i915/gem/selftests/mock_context.c @@ -150,7 +150,8 @@ live_context_for_engine(struct intel_engine_cs *engine, struct file *file) } struct i915_gem_context * -kernel_context(struct drm_i915_private *i915) +kernel_context(struct drm_i915_private *i915, + struct i915_address_space *vm) { struct i915_gem_context *ctx; struct i915_gem_proto_context *pc; @@ -159,6 +160,12 @@ kernel_context(struct drm_i915_private *i915) if (IS_ERR(pc)) return ERR_CAST(pc); + if (vm) { + if (pc->vm) + i915_vm_put(pc->vm); + pc->vm = i915_vm_get(vm); + } + ctx = i915_gem_create_context(i915, pc); proto_context_close(pc); if (IS_ERR(ctx)) diff --git a/drivers/gpu/drm/i915/gem/selftests/mock_context.h b/drivers/gpu/drm/i915/gem/selftests/mock_context.h index 2a6121d33352d..7a02fd9b5866a 100644 --- a/drivers/gpu/drm/i915/gem/selftests/mock_context.h +++ b/drivers/gpu/drm/i915/gem/selftests/mock_context.h @@ -10,6 +10,7 @@ struct file; struct drm_i915_private; struct intel_engine_cs; +struct i915_address_space; void mock_init_contexts(struct drm_i915_private *i915); @@ -25,7 +26,8 @@ live_context(struct drm_i915_private *i915, struct file *file); struct i915_gem_context * live_context_for_engine(struct intel_engine_cs *engine, struct file *file); -struct i915_gem_context *kernel_context(struct drm_i915_private *i915); +struct i915_gem_context *kernel_context(struct drm_i915_private *i915, + struct i915_address_space *vm); void kernel_context_close(struct i915_gem_context *ctx); #endif /* !__MOCK_CONTEXT_H */ diff --git a/drivers/gpu/drm/i915/gt/selftest_execlists.c b/drivers/gpu/drm/i915/gt/selftest_execlists.c index a0e75b71a3374..0989e024f7a03 100644 --- a/drivers/gpu/drm/i915/gt/selftest_execlists.c +++ b/drivers/gpu/drm/i915/gt/selftest_execlists.c @@ -1522,12 +1522,12 @@ static int live_busywait_preempt(void *arg) * preempt the busywaits used to synchronise between rings. */ - ctx_hi = kernel_context(gt->i915); + ctx_hi = kernel_context(gt->i915, NULL); if (!ctx_hi) return -ENOMEM; ctx_hi->sched.priority = I915_CONTEXT_MAX_USER_PRIORITY; - ctx_lo = kernel_context(gt->i915); + ctx_lo = kernel_context(gt->i915, NULL); if (!ctx_lo) goto err_ctx_hi; ctx_lo->sched.priority = I915_CONTEXT_MIN_USER_PRIORITY; @@ -1724,12 +1724,12 @@ static int live_preempt(void *arg) if (igt_spinner_init(&spin_lo, gt)) goto err_spin_hi; - ctx_hi = kernel_context(gt->i915); + ctx_hi = kernel_context(gt->i915, NULL); if (!ctx_hi) goto err_spin_lo; ctx_hi->sched.priority = I915_CONTEXT_MAX_USER_PRIORITY; - ctx_lo = kernel_context(gt->i915); + ctx_lo = kernel_context(gt->i915, NULL); if (!ctx_lo) goto err_ctx_hi; ctx_lo->sched.priority = I915_CONTEXT_MIN_USER_PRIORITY; @@ -1816,11 +1816,11 @@ static int live_late_preempt(void *arg) if (igt_spinner_init(&spin_lo, gt)) goto err_spin_hi; - ctx_hi = kernel_context(gt->i915); + ctx_hi = kernel_context(gt->i915, NULL); if (!ctx_hi) goto err_spin_lo; - ctx_lo = kernel_context(gt->i915); + ctx_lo = kernel_context(gt->i915, NULL); if (!ctx_lo) goto err_ctx_hi; @@ -1910,7 +1910,7 @@ struct preempt_client { static int preempt_client_init(struct intel_gt *gt, struct preempt_client *c) { - c->ctx = kernel_context(gt->i915); + c->ctx = kernel_context(gt->i915, NULL); if (!c->ctx) return -ENOMEM; @@ -3367,12 +3367,12 @@ static int live_preempt_timeout(void *arg) if (igt_spinner_init(&spin_lo, gt)) return -ENOMEM; - ctx_hi = kernel_context(gt->i915); + ctx_hi = kernel_context(gt->i915, NULL); if (!ctx_hi) goto err_spin_lo; ctx_hi->sched.priority = I915_CONTEXT_MAX_USER_PRIORITY; - ctx_lo = kernel_context(gt->i915); + ctx_lo = kernel_context(gt->i915, NULL); if (!ctx_lo) goto err_ctx_hi; ctx_lo->sched.priority = I915_CONTEXT_MIN_USER_PRIORITY; @@ -3659,7 +3659,7 @@ static int live_preempt_smoke(void *arg) } for (n = 0; n < smoke.ncontext; n++) { - smoke.contexts[n] = kernel_context(smoke.gt->i915); + smoke.contexts[n] = kernel_context(smoke.gt->i915, NULL); if (!smoke.contexts[n]) goto err_ctx; } diff --git a/drivers/gpu/drm/i915/gt/selftest_hangcheck.c b/drivers/gpu/drm/i915/gt/selftest_hangcheck.c index 746985971c3a6..3676eaf6b2aee 100644 --- a/drivers/gpu/drm/i915/gt/selftest_hangcheck.c +++ b/drivers/gpu/drm/i915/gt/selftest_hangcheck.c @@ -42,7 +42,7 @@ static int hang_init(struct hang *h, struct intel_gt *gt) memset(h, 0, sizeof(*h)); h->gt = gt; - h->ctx = kernel_context(gt->i915); + h->ctx = kernel_context(gt->i915, NULL); if (IS_ERR(h->ctx)) return PTR_ERR(h->ctx); From patchwork Mon May 3 15:57:47 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Ekstrand X-Patchwork-Id: 12236453 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8D34AC43470 for ; 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[134.134.139.74]) by smtp.gmail.com with ESMTPSA id gf21sm9783296pjb.20.2021.05.03.08.58.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 May 2021 08:58:37 -0700 (PDT) From: Jason Ekstrand To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH 26/27] i915/gem/selftests: Assign the VM at context creation in igt_shared_ctx_exec Date: Mon, 3 May 2021 10:57:47 -0500 Message-Id: <20210503155748.1961781-27-jason@jlekstrand.net> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210503155748.1961781-1-jason@jlekstrand.net> References: <20210503155748.1961781-1-jason@jlekstrand.net> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jason Ekstrand Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" We want to delete __assign_ppgtt and, generally, stop setting the VM after context creation. This is the one place I could find in the selftests where we set a VM after the fact. Signed-off-by: Jason Ekstrand Reviewed-by: Daniel Vetter --- drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c index 76029d7143f6c..76dd5cfe11b3c 100644 --- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c @@ -813,16 +813,12 @@ static int igt_shared_ctx_exec(void *arg) struct i915_gem_context *ctx; struct intel_context *ce; - ctx = kernel_context(i915, NULL); + ctx = kernel_context(i915, ctx_vm(parent)); if (IS_ERR(ctx)) { err = PTR_ERR(ctx); goto out_test; } - mutex_lock(&ctx->mutex); - __assign_ppgtt(ctx, ctx_vm(parent)); - mutex_unlock(&ctx->mutex); - ce = i915_gem_context_get_engine(ctx, engine->legacy_idx); GEM_BUG_ON(IS_ERR(ce)); From patchwork Mon May 3 15:57:48 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Ekstrand X-Patchwork-Id: 12236455 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2C15DC433B4 for ; Mon, 3 May 2021 15:59:03 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id C29B661183 for ; Mon, 3 May 2021 15:59:02 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C29B661183 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=jlekstrand.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id D43556E912; Mon, 3 May 2021 15:58:42 +0000 (UTC) Received: from mail-pl1-x630.google.com (mail-pl1-x630.google.com [IPv6:2607:f8b0:4864:20::630]) by gabe.freedesktop.org (Postfix) with ESMTPS id 953316E900 for ; Mon, 3 May 2021 15:58:40 +0000 (UTC) Received: by mail-pl1-x630.google.com with SMTP id s20so3045782plr.13 for ; Mon, 03 May 2021 08:58:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=jlekstrand-net.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=0o/IheQQ+ER7R0/7quXZUY7IPT4x/5Hs9vu/+YB0sLk=; b=tVRad2P8V1nG8QSqddcOe5Ut5lDKS/B6clGVX3Py9JQyIk1qOgizhgWI9B6sHOBgJ0 F0kQ4MmrwUvf+OaDh/LyBPQivHTqA0CA3VPbtkWIbB6DrAfglWL47jGIduxXfEBhBhfq 26rR2RmLmF2toOH7gaihawQt6fM873ZU6sZZsw3jZ3BmiuFxyc/VM496ivScJ9cOD90C E3VKKF1YeXJHh9j4Vqbmz7GpWGYT305QTftX3920ZLl6HsdY/B9xWJi80vuIoYrrcA7C gDKTWu6TZ8rCigrZiG+iySD1k7W0bK9MWwFtRIfO4WL5OmB8QBJUfcph/TqOokJSKWrv eMxw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=0o/IheQQ+ER7R0/7quXZUY7IPT4x/5Hs9vu/+YB0sLk=; b=sh6rzqhBOyws2asWixl7QTAlWJ5nFyRKaNqX6F3tv+10xknnutvGpLuCmuHHwFG8g0 jt0xbcfYiHKHOi2qq5rQacW+wxwkJIdpQy5FWUQx/YvQk07HlBsqXXnc9sx6Ugkxa8lu Vn8anl6/ywRm4Ss7Yy+aJasGoPaDiGoXelAKwg1nVEaQ4KyYqCJlUocPr7Mww8wFn6gX QF8vjD5HOli9ePvdybrYiK3w53SZXeShiTC7jn6t7AgP+SiR5jlVFu2hpynvbOAfFYyg NH6mENvOzBMTRIC31RwwrEPnKCrDT7st5BbutaUf950qqjJX63Xe8lCVfh2sfComYTcq WPxw== X-Gm-Message-State: AOAM533fvXFt/cEzzhxHU+6jf03ou5NEjRVkVgHXnAq9OBaBwos0J16D oaPgVdsRPZdCm4HiOyCcjciRWA== X-Google-Smtp-Source: ABdhPJycMWIRtfHVo9NZczOpmmk9jyqtfV5NTakIswTiETmnMwWA8D0/2orWQb7KTYV0BN0j9+81hw== X-Received: by 2002:a17:903:2093:b029:ee:d210:c956 with SMTP id d19-20020a1709032093b02900eed210c956mr7230126plc.82.1620057520042; Mon, 03 May 2021 08:58:40 -0700 (PDT) Received: from omlet.com (jfdmzpr05-ext.jf.intel.com. [134.134.139.74]) by smtp.gmail.com with ESMTPSA id gf21sm9783296pjb.20.2021.05.03.08.58.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 May 2021 08:58:39 -0700 (PDT) From: Jason Ekstrand To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH 27/27] drm/i915/gem: Roll all of context creation together Date: Mon, 3 May 2021 10:57:48 -0500 Message-Id: <20210503155748.1961781-28-jason@jlekstrand.net> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210503155748.1961781-1-jason@jlekstrand.net> References: <20210503155748.1961781-1-jason@jlekstrand.net> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jason Ekstrand Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Now that we have the whole engine set and VM at context creation time, we can just assign those fields instead of creating first and handling the VM and engines later. This lets us avoid creating useless VMs and engine sets and lets us get rid of the complex VM setting code. Signed-off-by: Jason Ekstrand Reviewed-by: Daniel Vetter --- drivers/gpu/drm/i915/gem/i915_gem_context.c | 159 ++++++------------ .../gpu/drm/i915/gem/selftests/mock_context.c | 33 ++-- 2 files changed, 64 insertions(+), 128 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c index 6e5828fe1a792..6bffb0e579b4e 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c @@ -1302,56 +1302,6 @@ static int __context_set_persistence(struct i915_gem_context *ctx, bool state) return 0; } -static struct i915_gem_context * -__create_context(struct drm_i915_private *i915, - const struct i915_gem_proto_context *pc) -{ - struct i915_gem_context *ctx; - struct i915_gem_engines *e; - int err; - int i; - - ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); - if (!ctx) - return ERR_PTR(-ENOMEM); - - kref_init(&ctx->ref); - ctx->i915 = i915; - ctx->sched = pc->sched; - mutex_init(&ctx->mutex); - INIT_LIST_HEAD(&ctx->link); - - spin_lock_init(&ctx->stale.lock); - INIT_LIST_HEAD(&ctx->stale.engines); - - mutex_init(&ctx->engines_mutex); - e = default_engines(ctx, pc->legacy_rcs_sseu); - if (IS_ERR(e)) { - err = PTR_ERR(e); - goto err_free; - } - RCU_INIT_POINTER(ctx->engines, e); - - INIT_RADIX_TREE(&ctx->handles_vma, GFP_KERNEL); - mutex_init(&ctx->lut_mutex); - - /* NB: Mark all slices as needing a remap so that when the context first - * loads it will restore whatever remap state already exists. If there - * is no remap info, it will be a NOP. */ - ctx->remap_slice = ALL_L3_SLICES(i915); - - ctx->user_flags = pc->user_flags; - - for (i = 0; i < ARRAY_SIZE(ctx->hang_timestamp); i++) - ctx->hang_timestamp[i] = jiffies - CONTEXT_FAST_HANG_JIFFIES; - - return ctx; - -err_free: - kfree(ctx); - return ERR_PTR(err); -} - static inline struct i915_gem_engines * __context_engines_await(const struct i915_gem_context *ctx, bool *user_engines) @@ -1395,86 +1345,77 @@ context_apply_all(struct i915_gem_context *ctx, i915_sw_fence_complete(&e->fence); } -static void __apply_ppgtt(struct intel_context *ce, void *vm) -{ - i915_vm_put(ce->vm); - ce->vm = i915_vm_get(vm); -} - -static struct i915_address_space * -__set_ppgtt(struct i915_gem_context *ctx, struct i915_address_space *vm) -{ - struct i915_address_space *old; - - old = rcu_replace_pointer(ctx->vm, - i915_vm_open(vm), - lockdep_is_held(&ctx->mutex)); - GEM_BUG_ON(old && i915_vm_is_4lvl(vm) != i915_vm_is_4lvl(old)); - - context_apply_all(ctx, __apply_ppgtt, vm); - - return old; -} - -static void __assign_ppgtt(struct i915_gem_context *ctx, - struct i915_address_space *vm) -{ - if (vm == rcu_access_pointer(ctx->vm)) - return; - - vm = __set_ppgtt(ctx, vm); - if (vm) - i915_vm_close(vm); -} - static struct i915_gem_context * i915_gem_create_context(struct drm_i915_private *i915, const struct i915_gem_proto_context *pc) { struct i915_gem_context *ctx; - int ret; + struct i915_gem_engines *e; + int err; + int i; - ctx = __create_context(i915, pc); - if (IS_ERR(ctx)) - return ctx; + ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); + if (!ctx) + return ERR_PTR(-ENOMEM); - if (pc->vm) { - mutex_lock(&ctx->mutex); - __assign_ppgtt(ctx, pc->vm); - mutex_unlock(&ctx->mutex); - } + kref_init(&ctx->ref); + ctx->i915 = i915; + ctx->sched = pc->sched; + mutex_init(&ctx->mutex); + INIT_LIST_HEAD(&ctx->link); - if (pc->num_user_engines >= 0) { - struct i915_gem_engines *engines; + spin_lock_init(&ctx->stale.lock); + INIT_LIST_HEAD(&ctx->stale.engines); - engines = user_engines(ctx, pc->num_user_engines, - pc->user_engines); - if (IS_ERR(engines)) { - context_close(ctx); - return ERR_CAST(engines); - } + if (pc->vm) + RCU_INIT_POINTER(ctx->vm, i915_vm_open(pc->vm)); - mutex_lock(&ctx->engines_mutex); + mutex_init(&ctx->engines_mutex); + if (pc->num_user_engines >= 0) { i915_gem_context_set_user_engines(ctx); - engines = rcu_replace_pointer(ctx->engines, engines, 1); - mutex_unlock(&ctx->engines_mutex); - - free_engines(engines); + e = user_engines(ctx, pc->num_user_engines, pc->user_engines); + } else { + i915_gem_context_clear_user_engines(ctx); + e = default_engines(ctx, pc->legacy_rcs_sseu); } + if (IS_ERR(e)) { + err = PTR_ERR(e); + goto err_vm; + } + RCU_INIT_POINTER(ctx->engines, e); + + INIT_RADIX_TREE(&ctx->handles_vma, GFP_KERNEL); + mutex_init(&ctx->lut_mutex); + + /* NB: Mark all slices as needing a remap so that when the context first + * loads it will restore whatever remap state already exists. If there + * is no remap info, it will be a NOP. */ + ctx->remap_slice = ALL_L3_SLICES(i915); + + ctx->user_flags = pc->user_flags; + + for (i = 0; i < ARRAY_SIZE(ctx->hang_timestamp); i++) + ctx->hang_timestamp[i] = jiffies - CONTEXT_FAST_HANG_JIFFIES; if (pc->single_timeline) { - ret = drm_syncobj_create(&ctx->syncobj, + err = drm_syncobj_create(&ctx->syncobj, DRM_SYNCOBJ_CREATE_SIGNALED, NULL); - if (ret) { - context_close(ctx); - return ERR_PTR(ret); - } + if (err) + goto err_engines; } trace_i915_context_create(ctx); return ctx; + +err_engines: + free_engines(e); +err_vm: + if (ctx->vm) + i915_vm_close(ctx->vm); + kfree(ctx); + return ERR_PTR(err); } static void init_contexts(struct i915_gem_contexts *gc) diff --git a/drivers/gpu/drm/i915/gem/selftests/mock_context.c b/drivers/gpu/drm/i915/gem/selftests/mock_context.c index 500ef27ba4771..fee070df1c97b 100644 --- a/drivers/gpu/drm/i915/gem/selftests/mock_context.c +++ b/drivers/gpu/drm/i915/gem/selftests/mock_context.c @@ -31,15 +31,6 @@ mock_context(struct drm_i915_private *i915, i915_gem_context_set_persistence(ctx); - mutex_init(&ctx->engines_mutex); - e = default_engines(ctx, null_sseu); - if (IS_ERR(e)) - goto err_free; - RCU_INIT_POINTER(ctx->engines, e); - - INIT_RADIX_TREE(&ctx->handles_vma, GFP_KERNEL); - mutex_init(&ctx->lut_mutex); - if (name) { struct i915_ppgtt *ppgtt; @@ -47,25 +38,29 @@ mock_context(struct drm_i915_private *i915, ppgtt = mock_ppgtt(i915, name); if (!ppgtt) - goto err_put; - - mutex_lock(&ctx->mutex); - __set_ppgtt(ctx, &ppgtt->vm); - mutex_unlock(&ctx->mutex); + goto err_free; + ctx->vm = i915_vm_open(&ppgtt->vm); i915_vm_put(&ppgtt->vm); } + mutex_init(&ctx->engines_mutex); + e = default_engines(ctx, null_sseu); + if (IS_ERR(e)) + goto err_vm; + RCU_INIT_POINTER(ctx->engines, e); + + INIT_RADIX_TREE(&ctx->handles_vma, GFP_KERNEL); + mutex_init(&ctx->lut_mutex); + return ctx; +err_vm: + if (ctx->vm) + i915_vm_close(ctx->vm); err_free: kfree(ctx); return NULL; - -err_put: - i915_gem_context_set_closed(ctx); - i915_gem_context_put(ctx); - return NULL; } void mock_context_close(struct i915_gem_context *ctx)