From patchwork Thu Jul 8 15:48:09 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Ekstrand X-Patchwork-Id: 12365525 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=-16.8 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 131B6C07E96 for ; Thu, 8 Jul 2021 15:49:00 +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 D1DE4613F3 for ; Thu, 8 Jul 2021 15:48:59 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D1DE4613F3 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=jlekstrand.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 173886E8F2; Thu, 8 Jul 2021 15:48:47 +0000 (UTC) Received: from mail-oi1-x229.google.com (mail-oi1-x229.google.com [IPv6:2607:f8b0:4864:20::229]) by gabe.freedesktop.org (Postfix) with ESMTPS id DCB686E8EF for ; Thu, 8 Jul 2021 15:48:43 +0000 (UTC) Received: by mail-oi1-x229.google.com with SMTP id w74so8286593oiw.8 for ; Thu, 08 Jul 2021 08:48:43 -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=0RIIX9a/bSdC8IyjYK5e5tdZw/xYUlwB4mhrkZu68g4=; b=Wyu0FNJ+4OPG/saE+iTZ7l9WAHu5ZYT+HJI+WD9hFHGHy/xpm7/CeRy67gaJmmk4CM TZB14TBBV1vwFburHGDJk8GUEjAzDpskqHpJnLDh4Fg+uarQ27t4KMI2g6run0uOHWJ6 jYr9XA34aRZUoPVl4vgFGNVr7vbD/rD46Hi8qiApnNYTRm4RGKefHsSUXDqzBQwp4IOG C8YHvQLRO373xQSPHCbgDcImSzygdxPFCo4GpKVAo0rbB+lGewoQ1NJszFPIrJUIHTX+ d5hBakg5kk9Palh5H2GZtk4+CPi2h8iKOwg1XT6KkTyvYRyIcPysJJnqmE6klbZfFVyv pCIA== 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=0RIIX9a/bSdC8IyjYK5e5tdZw/xYUlwB4mhrkZu68g4=; b=SjiiJcu/0gYBPXtntzHDSr4eajcno25fzGQc7KMIdcztRX3lH/fvguFFeQ54INrP+V gLf/kaLO4tpSYMME13uf/BuQ8yWzE3E1LVTSLBIMn9gxTN/pw0XyPc5PGU+GYpoZ5yaW l43W6sakde3xxeMjlRyVxuJzWTJUmbKP0J7tKC30rBBO14SScfbWZWBgfqKJJ4Noj3TP y7LMFAZF7j9AHgWFqMNNYxF5beceASulMETVgZdiQpfgW6vnP+DUAH9DbQIst+pfe4xI zkuSTBIFG8OCaMfh0xDdDgPn9gzN6I696beWeh/Jz6UPeD6kZ1ZaCxiRybYznI2F1/xd mexQ== X-Gm-Message-State: AOAM532zhL9JZ2fK67u1ELUMBysngYLBs6jkpdc62wV19K69+ZaPXqqB Ub7wazdaORuxdXF14b6Oh0vJnxvhT532XQ== X-Google-Smtp-Source: ABdhPJxOFwUBY9eM9I9U+xywjJWVLU4WvHLoqUrYCREB1asqJb3gDmI6uj2/l6hu8uJy0txpBtxHsw== X-Received: by 2002:a05:6808:f91:: with SMTP id o17mr3703226oiw.77.1625759322890; Thu, 08 Jul 2021 08:48:42 -0700 (PDT) Received: from omlet.lan ([68.203.99.148]) by smtp.gmail.com with ESMTPSA id d20sm548356otq.62.2021.07.08.08.48.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 08 Jul 2021 08:48:41 -0700 (PDT) From: Jason Ekstrand To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Date: Thu, 8 Jul 2021 10:48:09 -0500 Message-Id: <20210708154835.528166-5-jason@jlekstrand.net> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210708154835.528166-1-jason@jlekstrand.net> References: <20210708154835.528166-1-jason@jlekstrand.net> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 04/30] drm/i915/gem: Set the watchdog timeout directly in intel_context_set_gem (v2) X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Daniel Vetter Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" 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 5fc0eb4beeeae..9750a1ac7023e 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 */