[v2,2/9] drm/i915: Break out dma_resv ww locking utilities to separate files

Message ID	20210609063436.284332-3-thomas.hellstrom@linux.intel.com (mailing list archive)
State	New, archived
Headers	show Return-Path: <SRS0=iOfG=LD=lists.freedesktop.org=intel-gfx-bounces@kernel.org> DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8329B61183 IronPort-SDR: qLCP2QSPDUGHipZTmxq4ftzwH2vj4nzYJs9qipwc1i5R9e/Y7uQMqpjwp+d8pinY4WJZzRECKh KuiFF/xEt/Wg== IronPort-SDR: dQq7QX8zLlccjLafsYmxCDm9hCEvDpXY+gymRdlcg6fQ98qLA/90zvrFb+76VDhm17mu3fuJUj AdFRqR+79QbA== From: =?utf-8?q?Thomas_Hellstr=C3=B6m?= <thomas.hellstrom@linux.intel.com> To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Date: Wed, 9 Jun 2021 08:34:29 +0200 Message-Id: <20210609063436.284332-3-thomas.hellstrom@linux.intel.com> In-Reply-To: <20210609063436.284332-1-thomas.hellstrom@linux.intel.com> References: <20210609063436.284332-1-thomas.hellstrom@linux.intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v2 2/9] drm/i915: Break out dma_resv ww locking utilities to separate files Precedence: list Cc: matthew.auld@intel.com, =?utf-8?q?Thomas_Hellstr=C3=B6m?= <thomas.hellstrom@linux.intel.com> Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" <intel-gfx-bounces@lists.freedesktop.org>
Series	Prereqs for TTM accelerated migration \| expand [v2,0/9] Prereqs for TTM accelerated migration [v2,1/9] drm/i915: Reference objects on the ww object list [v2,2/9] drm/i915: Break out dma_resv ww locking utilities to separate files [v2,3/9] drm/i915: Introduce a ww transaction helper [v2,4/9] drm/i915/gt: Add an insert_entry for gen8_ppgtt [v2,5/9] drm/i915/gt: Add a routine to iterate over the pagetables of a GTT [v2,6/9] drm/i915/gt: Export the pinned context constructor and destructor [v2,7/9] drm/i915/gt: Pipelined page migration [v2,8/9] drm/i915/gt: Pipelined clear [v2,9/9] drm/i915/gt: Setup a default migration context on the GT

diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile index 4f22cac1c49b..16a5a006cf7c 100644 --- a/drivers/gpu/drm/i915/Makefile +++ b/drivers/gpu/drm/i915/Makefile @@ -164,6 +164,7 @@ i915-y += \ i915_cmd_parser.o \ i915_gem_evict.o \ i915_gem_gtt.o \ + i915_gem_ww.o \ i915_gem.o \ i915_globals.o \ i915_query.o \ diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object.h b/drivers/gpu/drm/i915/gem/i915_gem_object.h index 1fafcc89ecee..bdab929e448b 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_object.h +++ b/drivers/gpu/drm/i915/gem/i915_gem_object.h @@ -14,6 +14,7 @@ #include "display/intel_frontbuffer.h" #include "i915_gem_object_types.h" #include "i915_gem_gtt.h" +#include "i915_gem_ww.h" #include "i915_vma_types.h" /* diff --git a/drivers/gpu/drm/i915/gt/intel_renderstate.h b/drivers/gpu/drm/i915/gt/intel_renderstate.h index 48f009203917..4da4c5234ef0 100644 --- a/drivers/gpu/drm/i915/gt/intel_renderstate.h +++ b/drivers/gpu/drm/i915/gt/intel_renderstate.h @@ -8,6 +8,7 @@ #include <linux/types.h> #include "i915_gem.h" +#include "i915_gem_ww.h" struct i915_request; struct intel_context; diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 3f060ab58c5d..ce64d3005cf2 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -1204,62 +1204,6 @@ int i915_gem_open(struct drm_i915_private *i915, struct drm_file *file) return ret; } -void i915_gem_ww_ctx_init(struct i915_gem_ww_ctx *ww, bool intr) -{ - ww_acquire_init(&ww->ctx, &reservation_ww_class); - INIT_LIST_HEAD(&ww->obj_list); - ww->intr = intr; - ww->contended = NULL; -} - -static void i915_gem_ww_ctx_unlock_all(struct i915_gem_ww_ctx *ww) -{ - struct drm_i915_gem_object *obj; - - while ((obj = list_first_entry_or_null(&ww->obj_list, struct drm_i915_gem_object, obj_link))) { - list_del(&obj->obj_link); - i915_gem_object_unlock(obj); - i915_gem_object_put(obj); - } -} - -void i915_gem_ww_unlock_single(struct drm_i915_gem_object *obj) -{ - list_del(&obj->obj_link); - i915_gem_object_unlock(obj); - i915_gem_object_put(obj); -} - -void i915_gem_ww_ctx_fini(struct i915_gem_ww_ctx *ww) -{ - i915_gem_ww_ctx_unlock_all(ww); - WARN_ON(ww->contended); - ww_acquire_fini(&ww->ctx); -} - -int __must_check i915_gem_ww_ctx_backoff(struct i915_gem_ww_ctx *ww) -{ - int ret = 0; - - if (WARN_ON(!ww->contended)) - return -EINVAL; - - i915_gem_ww_ctx_unlock_all(ww); - if (ww->intr) - ret = dma_resv_lock_slow_interruptible(ww->contended->base.resv, &ww->ctx); - else - dma_resv_lock_slow(ww->contended->base.resv, &ww->ctx); - - if (!ret) - list_add_tail(&ww->contended->obj_link, &ww->obj_list); - else - i915_gem_object_put(ww->contended); - - ww->contended = NULL; - - return ret; -} - #if IS_ENABLED(CONFIG_DRM_I915_SELFTEST) #include "selftests/mock_gem_device.c" #include "selftests/i915_gem.c" diff --git a/drivers/gpu/drm/i915/i915_gem.h b/drivers/gpu/drm/i915/i915_gem.h index 440c35f1abc9..d0752e5553db 100644 --- a/drivers/gpu/drm/i915/i915_gem.h +++ b/drivers/gpu/drm/i915/i915_gem.h @@ -123,16 +123,4 @@ static inline bool __tasklet_is_scheduled(struct tasklet_struct *t) return test_bit(TASKLET_STATE_SCHED, &t->state); } -struct i915_gem_ww_ctx { - struct ww_acquire_ctx ctx; - struct list_head obj_list; - bool intr; - struct drm_i915_gem_object *contended; -}; - -void i915_gem_ww_ctx_init(struct i915_gem_ww_ctx *ctx, bool intr); -void i915_gem_ww_ctx_fini(struct i915_gem_ww_ctx *ctx); -int __must_check i915_gem_ww_ctx_backoff(struct i915_gem_ww_ctx *ctx); -void i915_gem_ww_unlock_single(struct drm_i915_gem_object *obj); - #endif /* __I915_GEM_H__ */ diff --git a/drivers/gpu/drm/i915/i915_gem_ww.c b/drivers/gpu/drm/i915/i915_gem_ww.c new file mode 100644 index 000000000000..3f6ff139478e --- /dev/null +++ b/drivers/gpu/drm/i915/i915_gem_ww.c @@ -0,0 +1,63 @@ +// SPDX-License-Identifier: MIT +/* + * Copyright © 2020 Intel Corporation + */ +#include <linux/dma-resv.h> +#include "i915_gem_ww.h" +#include "gem/i915_gem_object.h" + +void i915_gem_ww_ctx_init(struct i915_gem_ww_ctx *ww, bool intr) +{ + ww_acquire_init(&ww->ctx, &reservation_ww_class); + INIT_LIST_HEAD(&ww->obj_list); + ww->intr = intr; + ww->contended = NULL; +} + +static void i915_gem_ww_ctx_unlock_all(struct i915_gem_ww_ctx *ww) +{ + struct drm_i915_gem_object *obj; + + while ((obj = list_first_entry_or_null(&ww->obj_list, struct drm_i915_gem_object, obj_link))) { + list_del(&obj->obj_link); + i915_gem_object_unlock(obj); + i915_gem_object_put(obj); + } +} + +void i915_gem_ww_unlock_single(struct drm_i915_gem_object *obj) +{ + list_del(&obj->obj_link); + i915_gem_object_unlock(obj); + i915_gem_object_put(obj); +} + +void i915_gem_ww_ctx_fini(struct i915_gem_ww_ctx *ww) +{ + i915_gem_ww_ctx_unlock_all(ww); + WARN_ON(ww->contended); + ww_acquire_fini(&ww->ctx); +} + +int __must_check i915_gem_ww_ctx_backoff(struct i915_gem_ww_ctx *ww) +{ + int ret = 0; + + if (WARN_ON(!ww->contended)) + return -EINVAL; + + i915_gem_ww_ctx_unlock_all(ww); + if (ww->intr) + ret = dma_resv_lock_slow_interruptible(ww->contended->base.resv, &ww->ctx); + else + dma_resv_lock_slow(ww->contended->base.resv, &ww->ctx); + + if (!ret) + list_add_tail(&ww->contended->obj_link, &ww->obj_list); + else + i915_gem_object_put(ww->contended); + + ww->contended = NULL; + + return ret; +} diff --git a/drivers/gpu/drm/i915/i915_gem_ww.h b/drivers/gpu/drm/i915/i915_gem_ww.h new file mode 100644 index 000000000000..f2d8769e4118 --- /dev/null +++ b/drivers/gpu/drm/i915/i915_gem_ww.h @@ -0,0 +1,21 @@ +/* SPDX-License-Identifier: MIT */ +/* + * Copyright © 2020 Intel Corporation + */ +#ifndef __I915_GEM_WW_H__ +#define __I915_GEM_WW_H__ + +#include <drm/drm_drv.h> + +struct i915_gem_ww_ctx { + struct ww_acquire_ctx ctx; + struct list_head obj_list; + struct drm_i915_gem_object *contended; + bool intr; +}; + +void i915_gem_ww_ctx_init(struct i915_gem_ww_ctx *ctx, bool intr); +void i915_gem_ww_ctx_fini(struct i915_gem_ww_ctx *ctx); +int __must_check i915_gem_ww_ctx_backoff(struct i915_gem_ww_ctx *ctx); +void i915_gem_ww_unlock_single(struct drm_i915_gem_object *obj); +#endif

[v2,2/9] drm/i915: Break out dma_resv ww locking utilities to separate files

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Patch