From mboxrd@z Thu Jan 1 00:00:00 1970 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=-16.7 required=3.0 tests=BAYES_00, 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 9E542C4320E for ; Tue, 27 Jul 2021 00:06:32 +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 7149D60F6B for ; Tue, 27 Jul 2021 00:06:32 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 7149D60F6B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 06C1D6E92C; Tue, 27 Jul 2021 00:06:15 +0000 (UTC) Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by gabe.freedesktop.org (Postfix) with ESMTPS id 301826FEAE; Tue, 27 Jul 2021 00:05:59 +0000 (UTC) X-IronPort-AV: E=McAfee;i="6200,9189,10057"; a="191932126" X-IronPort-AV: E=Sophos;i="5.84,272,1620716400"; d="scan'208";a="191932126" Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Jul 2021 17:05:58 -0700 X-IronPort-AV: E=Sophos;i="5.84,272,1620716400"; d="scan'208";a="662339147" Received: from dhiatt-server.jf.intel.com ([10.54.81.3]) by fmsmga006-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Jul 2021 17:05:58 -0700 From: Matthew Brost To: , Date: Mon, 26 Jul 2021 17:23:22 -0700 Message-Id: <20210727002348.97202-8-matthew.brost@intel.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20210727002348.97202-1-matthew.brost@intel.com> References: <20210727002348.97202-1-matthew.brost@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 07/33] drm/i915: Move active request tracking to a vfunc 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Move active request tracking to a backend vfunc rather than assuming all backends want to do this in the manner. In the of case execlists / ring submission the tracking is on the physical engine while with GuC submission it is on the context. Signed-off-by: Matthew Brost Reviewed-by: John Harrison --- drivers/gpu/drm/i915/gt/intel_context.c | 3 ++ drivers/gpu/drm/i915/gt/intel_context_types.h | 7 ++++ drivers/gpu/drm/i915/gt/intel_engine_types.h | 6 +++ .../drm/i915/gt/intel_execlists_submission.c | 40 ++++++++++++++++++ .../gpu/drm/i915/gt/intel_ring_submission.c | 22 ++++++++++ drivers/gpu/drm/i915/gt/mock_engine.c | 30 ++++++++++++++ .../gpu/drm/i915/gt/uc/intel_guc_submission.c | 33 +++++++++++++++ drivers/gpu/drm/i915/i915_request.c | 41 ++----------------- drivers/gpu/drm/i915/i915_request.h | 2 + 9 files changed, 147 insertions(+), 37 deletions(-) diff --git a/drivers/gpu/drm/i915/gt/intel_context.c b/drivers/gpu/drm/i915/gt/intel_context.c index baa05fddd690..0bf4a13e9759 100644 --- a/drivers/gpu/drm/i915/gt/intel_context.c +++ b/drivers/gpu/drm/i915/gt/intel_context.c @@ -393,6 +393,9 @@ intel_context_init(struct intel_context *ce, struct intel_engine_cs *engine) spin_lock_init(&ce->guc_state.lock); INIT_LIST_HEAD(&ce->guc_state.fences); + spin_lock_init(&ce->guc_active.lock); + INIT_LIST_HEAD(&ce->guc_active.requests); + ce->guc_id = GUC_INVALID_LRC_ID; INIT_LIST_HEAD(&ce->guc_id_link); diff --git a/drivers/gpu/drm/i915/gt/intel_context_types.h b/drivers/gpu/drm/i915/gt/intel_context_types.h index 542c98418771..035108c10b2c 100644 --- a/drivers/gpu/drm/i915/gt/intel_context_types.h +++ b/drivers/gpu/drm/i915/gt/intel_context_types.h @@ -162,6 +162,13 @@ struct intel_context { struct list_head fences; } guc_state; + struct { + /** lock: protects everything in guc_active */ + spinlock_t lock; + /** requests: active requests on this context */ + struct list_head requests; + } guc_active; + /* GuC scheduling state flags that do not require a lock. */ atomic_t guc_sched_state_no_lock; diff --git a/drivers/gpu/drm/i915/gt/intel_engine_types.h b/drivers/gpu/drm/i915/gt/intel_engine_types.h index e55776e27a2a..1c7e2724cdae 100644 --- a/drivers/gpu/drm/i915/gt/intel_engine_types.h +++ b/drivers/gpu/drm/i915/gt/intel_engine_types.h @@ -414,6 +414,12 @@ struct intel_engine_cs { void (*release)(struct intel_engine_cs *engine); + /* + * Add / remove request from engine active tracking + */ + void (*add_active_request)(struct i915_request *rq); + void (*remove_active_request)(struct i915_request *rq); + struct intel_engine_execlists execlists; /* diff --git a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c index 6e4959ee5065..b4a876736074 100644 --- a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c +++ b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c @@ -3157,6 +3157,42 @@ static void execlists_park(struct intel_engine_cs *engine) cancel_timer(&engine->execlists.preempt); } +static void add_to_engine(struct i915_request *rq) +{ + lockdep_assert_held(&rq->engine->sched_engine->lock); + list_move_tail(&rq->sched.link, &rq->engine->sched_engine->requests); +} + +static void remove_from_engine(struct i915_request *rq) +{ + struct intel_engine_cs *engine, *locked; + + /* + * Virtual engines complicate acquiring the engine timeline lock, + * as their rq->engine pointer is not stable until under that + * engine lock. The simple ploy we use is to take the lock then + * check that the rq still belongs to the newly locked engine. + */ + locked = READ_ONCE(rq->engine); + spin_lock_irq(&locked->sched_engine->lock); + while (unlikely(locked != (engine = READ_ONCE(rq->engine)))) { + spin_unlock(&locked->sched_engine->lock); + spin_lock(&engine->sched_engine->lock); + locked = engine; + } + list_del_init(&rq->sched.link); + + clear_bit(I915_FENCE_FLAG_PQUEUE, &rq->fence.flags); + clear_bit(I915_FENCE_FLAG_HOLD, &rq->fence.flags); + + /* Prevent further __await_execution() registering a cb, then flush */ + set_bit(I915_FENCE_FLAG_ACTIVE, &rq->fence.flags); + + spin_unlock_irq(&locked->sched_engine->lock); + + i915_request_notify_execute_cb_imm(rq); +} + static bool can_preempt(struct intel_engine_cs *engine) { if (GRAPHICS_VER(engine->i915) > 8) @@ -3251,6 +3287,8 @@ logical_ring_default_vfuncs(struct intel_engine_cs *engine) engine->cops = &execlists_context_ops; engine->request_alloc = execlists_request_alloc; + engine->add_active_request = add_to_engine; + engine->remove_active_request = remove_from_engine; engine->reset.prepare = execlists_reset_prepare; engine->reset.rewind = execlists_reset_rewind; @@ -3847,6 +3885,8 @@ execlists_create_virtual(struct intel_engine_cs **siblings, unsigned int count) "v%dx%d", ve->base.class, count); ve->base.context_size = sibling->context_size; + ve->base.add_active_request = sibling->add_active_request; + ve->base.remove_active_request = sibling->remove_active_request; ve->base.emit_bb_start = sibling->emit_bb_start; ve->base.emit_flush = sibling->emit_flush; ve->base.emit_init_breadcrumb = sibling->emit_init_breadcrumb; diff --git a/drivers/gpu/drm/i915/gt/intel_ring_submission.c b/drivers/gpu/drm/i915/gt/intel_ring_submission.c index 5c4d204d07cc..a5404c7b600f 100644 --- a/drivers/gpu/drm/i915/gt/intel_ring_submission.c +++ b/drivers/gpu/drm/i915/gt/intel_ring_submission.c @@ -1047,6 +1047,25 @@ static void setup_irq(struct intel_engine_cs *engine) } } +static void add_to_engine(struct i915_request *rq) +{ + lockdep_assert_held(&rq->engine->sched_engine->lock); + list_move_tail(&rq->sched.link, &rq->engine->sched_engine->requests); +} + +static void remove_from_engine(struct i915_request *rq) +{ + spin_lock_irq(&rq->engine->sched_engine->lock); + list_del_init(&rq->sched.link); + + /* Prevent further __await_execution() registering a cb, then flush */ + set_bit(I915_FENCE_FLAG_ACTIVE, &rq->fence.flags); + + spin_unlock_irq(&rq->engine->sched_engine->lock); + + i915_request_notify_execute_cb_imm(rq); +} + static void setup_common(struct intel_engine_cs *engine) { struct drm_i915_private *i915 = engine->i915; @@ -1064,6 +1083,9 @@ static void setup_common(struct intel_engine_cs *engine) engine->reset.cancel = reset_cancel; engine->reset.finish = reset_finish; + engine->add_active_request = add_to_engine; + engine->remove_active_request = remove_from_engine; + engine->cops = &ring_context_ops; engine->request_alloc = ring_request_alloc; diff --git a/drivers/gpu/drm/i915/gt/mock_engine.c b/drivers/gpu/drm/i915/gt/mock_engine.c index 2ddaacb4e753..2c1af030310c 100644 --- a/drivers/gpu/drm/i915/gt/mock_engine.c +++ b/drivers/gpu/drm/i915/gt/mock_engine.c @@ -235,6 +235,34 @@ static void mock_submit_request(struct i915_request *request) spin_unlock_irqrestore(&engine->hw_lock, flags); } +static void mock_add_to_engine(struct i915_request *rq) +{ + lockdep_assert_held(&rq->engine->sched_engine->lock); + list_move_tail(&rq->sched.link, &rq->engine->sched_engine->requests); +} + +static void mock_remove_from_engine(struct i915_request *rq) +{ + struct intel_engine_cs *engine, *locked; + + /* + * Virtual engines complicate acquiring the engine timeline lock, + * as their rq->engine pointer is not stable until under that + * engine lock. The simple ploy we use is to take the lock then + * check that the rq still belongs to the newly locked engine. + */ + + locked = READ_ONCE(rq->engine); + spin_lock_irq(&locked->sched_engine->lock); + while (unlikely(locked != (engine = READ_ONCE(rq->engine)))) { + spin_unlock(&locked->sched_engine->lock); + spin_lock(&engine->sched_engine->lock); + locked = engine; + } + list_del_init(&rq->sched.link); + spin_unlock_irq(&locked->sched_engine->lock); +} + static void mock_reset_prepare(struct intel_engine_cs *engine) { } @@ -321,6 +349,8 @@ struct intel_engine_cs *mock_engine(struct drm_i915_private *i915, engine->base.emit_flush = mock_emit_flush; engine->base.emit_fini_breadcrumb = mock_emit_breadcrumb; engine->base.submit_request = mock_submit_request; + engine->base.add_active_request = mock_add_to_engine; + engine->base.remove_active_request = mock_remove_from_engine; engine->base.reset.prepare = mock_reset_prepare; engine->base.reset.rewind = mock_reset_rewind; diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c index 60a73d9a00f6..2d49fbcfb88b 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c @@ -1159,6 +1159,33 @@ static int guc_context_alloc(struct intel_context *ce) return lrc_alloc(ce, ce->engine); } +static void add_to_context(struct i915_request *rq) +{ + struct intel_context *ce = rq->context; + + spin_lock(&ce->guc_active.lock); + list_move_tail(&rq->sched.link, &ce->guc_active.requests); + spin_unlock(&ce->guc_active.lock); +} + +static void remove_from_context(struct i915_request *rq) +{ + struct intel_context *ce = rq->context; + + spin_lock_irq(&ce->guc_active.lock); + + list_del_init(&rq->sched.link); + clear_bit(I915_FENCE_FLAG_PQUEUE, &rq->fence.flags); + + /* Prevent further __await_execution() registering a cb, then flush */ + set_bit(I915_FENCE_FLAG_ACTIVE, &rq->fence.flags); + + spin_unlock_irq(&ce->guc_active.lock); + + atomic_dec(&ce->guc_id_ref); + i915_request_notify_execute_cb_imm(rq); +} + static const struct intel_context_ops guc_context_ops = { .alloc = guc_context_alloc, @@ -1568,6 +1595,8 @@ static void guc_default_vfuncs(struct intel_engine_cs *engine) engine->cops = &guc_context_ops; engine->request_alloc = guc_request_alloc; + engine->add_active_request = add_to_context; + engine->remove_active_request = remove_from_context; engine->sched_engine->schedule = i915_schedule; @@ -1932,6 +1961,10 @@ guc_create_virtual(struct intel_engine_cs **siblings, unsigned int count) "v%dx%d", ve->base.class, count); ve->base.context_size = sibling->context_size; + ve->base.add_active_request = + sibling->add_active_request; + ve->base.remove_active_request = + sibling->remove_active_request; ve->base.emit_bb_start = sibling->emit_bb_start; ve->base.emit_flush = sibling->emit_flush; ve->base.emit_init_breadcrumb = diff --git a/drivers/gpu/drm/i915/i915_request.c b/drivers/gpu/drm/i915/i915_request.c index 57c9187aff74..aeef45679897 100644 --- a/drivers/gpu/drm/i915/i915_request.c +++ b/drivers/gpu/drm/i915/i915_request.c @@ -182,7 +182,7 @@ static bool irq_work_imm(struct irq_work *wrk) return false; } -static void __notify_execute_cb_imm(struct i915_request *rq) +void i915_request_notify_execute_cb_imm(struct i915_request *rq) { __notify_execute_cb(rq, irq_work_imm); } @@ -256,37 +256,6 @@ i915_request_active_engine(struct i915_request *rq, return ret; } - -static void remove_from_engine(struct i915_request *rq) -{ - struct intel_engine_cs *engine, *locked; - - /* - * Virtual engines complicate acquiring the engine timeline lock, - * as their rq->engine pointer is not stable until under that - * engine lock. The simple ploy we use is to take the lock then - * check that the rq still belongs to the newly locked engine. - */ - locked = READ_ONCE(rq->engine); - spin_lock_irq(&locked->sched_engine->lock); - while (unlikely(locked != (engine = READ_ONCE(rq->engine)))) { - spin_unlock(&locked->sched_engine->lock); - spin_lock(&engine->sched_engine->lock); - locked = engine; - } - list_del_init(&rq->sched.link); - - clear_bit(I915_FENCE_FLAG_PQUEUE, &rq->fence.flags); - clear_bit(I915_FENCE_FLAG_HOLD, &rq->fence.flags); - - /* Prevent further __await_execution() registering a cb, then flush */ - set_bit(I915_FENCE_FLAG_ACTIVE, &rq->fence.flags); - - spin_unlock_irq(&locked->sched_engine->lock); - - __notify_execute_cb_imm(rq); -} - static void __rq_init_watchdog(struct i915_request *rq) { rq->watchdog.timer.function = NULL; @@ -383,9 +352,7 @@ bool i915_request_retire(struct i915_request *rq) * after removing the breadcrumb and signaling it, so that we do not * inadvertently attach the breadcrumb to a completed request. */ - if (!list_empty(&rq->sched.link)) - remove_from_engine(rq); - atomic_dec(&rq->context->guc_id_ref); + rq->engine->remove_active_request(rq); GEM_BUG_ON(!llist_empty(&rq->execute_cb)); __list_del_entry(&rq->link); /* poison neither prev/next (RCU walks) */ @@ -516,7 +483,7 @@ __await_execution(struct i915_request *rq, if (llist_add(&cb->work.node.llist, &signal->execute_cb)) { if (i915_request_is_active(signal) || __request_in_flight(signal)) - __notify_execute_cb_imm(signal); + i915_request_notify_execute_cb_imm(signal); } return 0; @@ -655,7 +622,7 @@ bool __i915_request_submit(struct i915_request *request) result = true; GEM_BUG_ON(test_bit(I915_FENCE_FLAG_ACTIVE, &request->fence.flags)); - list_move_tail(&request->sched.link, &engine->sched_engine->requests); + engine->add_active_request(request); active: clear_bit(I915_FENCE_FLAG_PQUEUE, &request->fence.flags); set_bit(I915_FENCE_FLAG_ACTIVE, &request->fence.flags); diff --git a/drivers/gpu/drm/i915/i915_request.h b/drivers/gpu/drm/i915/i915_request.h index 717e5b292046..128030f43bbf 100644 --- a/drivers/gpu/drm/i915/i915_request.h +++ b/drivers/gpu/drm/i915/i915_request.h @@ -647,4 +647,6 @@ bool i915_request_active_engine(struct i915_request *rq, struct intel_engine_cs **active); +void i915_request_notify_execute_cb_imm(struct i915_request *rq); + #endif /* I915_REQUEST_H */ -- 2.28.0 _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx