From patchwork Thu Jan 14 13:56:08 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Wilson X-Patchwork-Id: 12019589 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, 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 80B8EC433E0 for ; Thu, 14 Jan 2021 13:56:20 +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 EA48023A69 for ; Thu, 14 Jan 2021 13:56:19 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org EA48023A69 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=chris-wilson.co.uk 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 3E9646E3D2; Thu, 14 Jan 2021 13:56:19 +0000 (UTC) Received: from fireflyinternet.com (unknown [77.68.26.236]) by gabe.freedesktop.org (Postfix) with ESMTPS id E724C6E3A0 for ; Thu, 14 Jan 2021 13:56:16 +0000 (UTC) X-Default-Received-SPF: pass (skip=forwardok (res=PASS)) x-ip-name=78.156.65.138; Received: from build.alporthouse.com (unverified [78.156.65.138]) by fireflyinternet.com (Firefly Internet (M1)) with ESMTP id 23595520-1500050 for ; Thu, 14 Jan 2021 13:56:13 +0000 From: Chris Wilson To: intel-gfx@lists.freedesktop.org Date: Thu, 14 Jan 2021 13:56:08 +0000 Message-Id: <20210114135612.13210-1-chris@chris-wilson.co.uk> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Subject: [Intel-gfx] [CI 1/5] drm/i915: Mark up protected uses of 'i915_request_completed' 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: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" When we know that we are inside the timeline mutex, or inside the submission flow (under active.lock or the holder's rcu lock), we know that the rq->hwsp is stable and we can use the simpler direct version. Signed-off-by: Chris Wilson Reviewed-by: Andi Shyti --- drivers/gpu/drm/i915/gem/i915_gem_context.c | 2 +- drivers/gpu/drm/i915/gt/intel_breadcrumbs.c | 4 ++-- drivers/gpu/drm/i915/gt/intel_engine_cs.c | 6 +++--- .../drm/i915/gt/intel_execlists_submission.c | 4 ++-- drivers/gpu/drm/i915/gt/intel_reset.c | 3 +-- .../gpu/drm/i915/gt/intel_ring_submission.c | 4 +++- drivers/gpu/drm/i915/gt/intel_timeline.c | 4 ++-- drivers/gpu/drm/i915/i915_request.c | 19 +++++++++---------- drivers/gpu/drm/i915/i915_scheduler.c | 2 +- 9 files changed, 24 insertions(+), 24 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c index 68f58762d5e3..cac0c52fc681 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c @@ -408,7 +408,7 @@ __active_engine(struct i915_request *rq, struct intel_engine_cs **active) } if (i915_request_is_active(rq)) { - if (!i915_request_completed(rq)) + if (!__i915_request_is_complete(rq)) *active = locked; ret = true; } diff --git a/drivers/gpu/drm/i915/gt/intel_breadcrumbs.c b/drivers/gpu/drm/i915/gt/intel_breadcrumbs.c index be2c285a0ac7..d098fc0c14ec 100644 --- a/drivers/gpu/drm/i915/gt/intel_breadcrumbs.c +++ b/drivers/gpu/drm/i915/gt/intel_breadcrumbs.c @@ -517,8 +517,8 @@ static void print_signals(struct intel_breadcrumbs *b, struct drm_printer *p) list_for_each_entry_rcu(rq, &ce->signals, signal_link) drm_printf(p, "\t[%llx:%llx%s] @ %dms\n", rq->fence.context, rq->fence.seqno, - i915_request_completed(rq) ? "!" : - i915_request_started(rq) ? "*" : + __i915_request_is_complete(rq) ? "!" : + __i915_request_has_started(rq) ? "*" : "", jiffies_to_msecs(jiffies - rq->emitted_jiffies)); } diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c index fa76602f9852..3fe44cdfe20a 100644 --- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c +++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c @@ -1811,7 +1811,7 @@ intel_engine_find_active_request(struct intel_engine_cs *engine) struct intel_timeline *tl = request->context->timeline; list_for_each_entry_from_reverse(request, &tl->requests, link) { - if (i915_request_completed(request)) + if (__i915_request_is_complete(request)) break; active = request; @@ -1822,10 +1822,10 @@ intel_engine_find_active_request(struct intel_engine_cs *engine) return active; list_for_each_entry(request, &engine->active.requests, sched.link) { - if (i915_request_completed(request)) + if (__i915_request_is_complete(request)) continue; - if (!i915_request_started(request)) + if (!__i915_request_has_started(request)) continue; /* More than one preemptible request may match! */ diff --git a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c index d7d5a58990bb..e28f32661df4 100644 --- a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c +++ b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c @@ -3296,7 +3296,7 @@ static void rcu_virtual_context_destroy(struct work_struct *wrk) old = fetch_and_zero(&ve->request); if (old) { - GEM_BUG_ON(!i915_request_completed(old)); + GEM_BUG_ON(!__i915_request_is_complete(old)); __i915_request_submit(old); i915_request_put(old); } @@ -3573,7 +3573,7 @@ static void virtual_submit_request(struct i915_request *rq) } if (ve->request) { /* background completion from preempt-to-busy */ - GEM_BUG_ON(!i915_request_completed(ve->request)); + GEM_BUG_ON(!__i915_request_is_complete(ve->request)); __i915_request_submit(ve->request); i915_request_put(ve->request); } diff --git a/drivers/gpu/drm/i915/gt/intel_reset.c b/drivers/gpu/drm/i915/gt/intel_reset.c index 9d177297db79..bba385497d7b 100644 --- a/drivers/gpu/drm/i915/gt/intel_reset.c +++ b/drivers/gpu/drm/i915/gt/intel_reset.c @@ -151,8 +151,7 @@ static void mark_innocent(struct i915_request *rq) void __i915_request_reset(struct i915_request *rq, bool guilty) { RQ_TRACE(rq, "guilty? %s\n", yesno(guilty)); - - GEM_BUG_ON(i915_request_completed(rq)); + GEM_BUG_ON(__i915_request_is_complete(rq)); rcu_read_lock(); /* protect the GEM context */ if (guilty) { diff --git a/drivers/gpu/drm/i915/gt/intel_ring_submission.c b/drivers/gpu/drm/i915/gt/intel_ring_submission.c index 20f42722be8b..62410e1d3e4b 100644 --- a/drivers/gpu/drm/i915/gt/intel_ring_submission.c +++ b/drivers/gpu/drm/i915/gt/intel_ring_submission.c @@ -382,12 +382,14 @@ static void reset_rewind(struct intel_engine_cs *engine, bool stalled) rq = NULL; spin_lock_irqsave(&engine->active.lock, flags); + rcu_read_lock(); list_for_each_entry(pos, &engine->active.requests, sched.link) { - if (!i915_request_completed(pos)) { + if (!__i915_request_is_complete(pos)) { rq = pos; break; } } + rcu_read_unlock(); /* * The guilty request will get skipped on a hung engine. diff --git a/drivers/gpu/drm/i915/gt/intel_timeline.c b/drivers/gpu/drm/i915/gt/intel_timeline.c index 7fe05918a76e..037b0e3ccbed 100644 --- a/drivers/gpu/drm/i915/gt/intel_timeline.c +++ b/drivers/gpu/drm/i915/gt/intel_timeline.c @@ -582,11 +582,11 @@ int intel_timeline_read_hwsp(struct i915_request *from, rcu_read_lock(); cl = rcu_dereference(from->hwsp_cacheline); - if (i915_request_completed(from)) /* confirm cacheline is valid */ + if (i915_request_signaled(from)) /* confirm cacheline is valid */ goto unlock; if (unlikely(!i915_active_acquire_if_busy(&cl->active))) goto unlock; /* seqno wrapped and completed! */ - if (unlikely(i915_request_completed(from))) + if (unlikely(__i915_request_is_complete(from))) goto release; rcu_read_unlock(); diff --git a/drivers/gpu/drm/i915/i915_request.c b/drivers/gpu/drm/i915/i915_request.c index 0b1a46a0d866..784c05ac5cca 100644 --- a/drivers/gpu/drm/i915/i915_request.c +++ b/drivers/gpu/drm/i915/i915_request.c @@ -276,7 +276,7 @@ static void remove_from_engine(struct i915_request *rq) bool i915_request_retire(struct i915_request *rq) { - if (!i915_request_completed(rq)) + if (!__i915_request_is_complete(rq)) return false; RQ_TRACE(rq, "\n"); @@ -342,8 +342,7 @@ void i915_request_retire_upto(struct i915_request *rq) struct i915_request *tmp; RQ_TRACE(rq, "\n"); - - GEM_BUG_ON(!i915_request_completed(rq)); + GEM_BUG_ON(!__i915_request_is_complete(rq)); do { tmp = list_first_entry(&tl->requests, typeof(*tmp), link); @@ -552,7 +551,7 @@ bool __i915_request_submit(struct i915_request *request) * dropped upon retiring. (Otherwise if resubmit a *retired* * request, this would be a horrible use-after-free.) */ - if (i915_request_completed(request)) + if (__i915_request_is_complete(request)) goto xfer; if (unlikely(intel_context_is_banned(request->context))) @@ -652,7 +651,7 @@ void __i915_request_unsubmit(struct i915_request *request) i915_request_cancel_breadcrumb(request); /* We've already spun, don't charge on resubmitting. */ - if (request->sched.semaphores && i915_request_started(request)) + if (request->sched.semaphores && __i915_request_has_started(request)) request->sched.semaphores = 0; /* @@ -864,7 +863,7 @@ __i915_request_create(struct intel_context *ce, gfp_t gfp) RCU_INIT_POINTER(rq->timeline, tl); RCU_INIT_POINTER(rq->hwsp_cacheline, tl->hwsp_cacheline); rq->hwsp_seqno = tl->hwsp_seqno; - GEM_BUG_ON(i915_request_completed(rq)); + GEM_BUG_ON(__i915_request_is_complete(rq)); rq->rcustate = get_state_synchronize_rcu(); /* acts as smp_mb() */ @@ -978,7 +977,7 @@ i915_request_await_start(struct i915_request *rq, struct i915_request *signal) struct i915_request *prev; /* Confirm signal has not been retired, the link is valid */ - if (unlikely(i915_request_started(signal))) + if (unlikely(__i915_request_has_started(signal))) break; /* Is signal the earliest request on its timeline? */ @@ -1520,7 +1519,7 @@ __i915_request_add_to_timeline(struct i915_request *rq) */ prev = to_request(__i915_active_fence_set(&timeline->last_request, &rq->fence)); - if (prev && !i915_request_completed(prev)) { + if (prev && !__i915_request_is_complete(prev)) { /* * The requests are supposed to be kept in order. However, * we need to be wary in case the timeline->last_request @@ -1897,10 +1896,10 @@ static char queue_status(const struct i915_request *rq) static const char *run_status(const struct i915_request *rq) { - if (i915_request_completed(rq)) + if (__i915_request_is_complete(rq)) return "!"; - if (i915_request_started(rq)) + if (__i915_request_has_started(rq)) return "*"; if (!i915_sw_fence_signaled(&rq->semaphore)) diff --git a/drivers/gpu/drm/i915/i915_scheduler.c b/drivers/gpu/drm/i915/i915_scheduler.c index 318e359bf5c3..7144239f08df 100644 --- a/drivers/gpu/drm/i915/i915_scheduler.c +++ b/drivers/gpu/drm/i915/i915_scheduler.c @@ -520,7 +520,7 @@ void i915_request_show_with_schedule(struct drm_printer *m, if (signaler->timeline == rq->timeline) continue; - if (i915_request_completed(signaler)) + if (__i915_request_is_complete(signaler)) continue; i915_request_show(m, signaler, prefix, indent + 2);