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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id BB30AC5AD49 for ; Tue, 3 Jun 2025 09:32:20 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6842810E626; Tue, 3 Jun 2025 09:32:20 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.b="N5E6GWgC"; dkim-atps=neutral Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by gabe.freedesktop.org (Postfix) with ESMTPS id A44F110E5CF; Tue, 3 Jun 2025 09:32:18 +0000 (UTC) Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id 0BD5E629CD; Tue, 3 Jun 2025 09:32:18 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A4CE4C4CEED; Tue, 3 Jun 2025 09:32:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1748943137; bh=WCLD/qkwZkVgAwWKv39qjH8O02jRnPMeHdVASHi442o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=N5E6GWgC+IQQrb+kWCIzWbI9jhe6JBR6IcYX31arnC9PcigyAzvnpOyeJxNJTNd0S /fw5IgT2zCYNww7V9a8cohQ2k5k/D5FPFOY0OenLmQNCfos8lbrNuYPIZq+0HWmrVS fLvKgLg8lKaR7+M5oeQZ+tSAgTIlwqEsSpHFiqkRnIw16gdXQjNIkKwrZv35A/MZjc +BDrs4Y19XXaOzcpjOR4REDXhsqLdLg9slJBDLbJvIzMzUCWdHgvkfEjueEnDqsLzp IuVFgK/eSRXP9osfYu1VRPh0yI/J4Pk3oMOg5C65RNDCSycOAtsZnoFBpZLOrF87qT rL7K1EbRWpaiQ== From: Philipp Stanner To: Lyude Paul , Danilo Krummrich , David Airlie , Simona Vetter , Matthew Brost , Philipp Stanner , =?UTF-8?q?Christian=20K=C3=B6nig?= , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Sumit Semwal , Tvrtko Ursulin , Pierre-Eric Pelloux-Prayer Cc: dri-devel@lists.freedesktop.org, nouveau@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org Subject: [RFC PATCH 5/6] drm/nouveau: Add new callback for scheduler teardown Date: Tue, 3 Jun 2025 11:31:30 +0200 Message-ID: <20250603093130.100159-7-phasta@kernel.org> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250603093130.100159-2-phasta@kernel.org> References: <20250603093130.100159-2-phasta@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: nouveau@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Nouveau development list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: nouveau-bounces@lists.freedesktop.org Sender: "Nouveau" There is a new callback for always tearing the scheduler down in a leak-free, deadlock-free manner. Port Nouveau as its first user by providing the scheduler with a callback that ensures the fence context gets killed in drm_sched_fini(). Signed-off-by: Philipp Stanner --- drivers/gpu/drm/nouveau/nouveau_fence.c | 15 +++++++++++++++ drivers/gpu/drm/nouveau/nouveau_fence.h | 1 + drivers/gpu/drm/nouveau/nouveau_sched.c | 15 ++++++++++++++- 3 files changed, 30 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_fence.c b/drivers/gpu/drm/nouveau/nouveau_fence.c index 869d4335c0f4..1c30ce686c6a 100644 --- a/drivers/gpu/drm/nouveau/nouveau_fence.c +++ b/drivers/gpu/drm/nouveau/nouveau_fence.c @@ -240,6 +240,21 @@ nouveau_fence_emit(struct nouveau_fence *fence) return ret; } +void +nouveau_fence_cancel(struct nouveau_fence *fence) +{ + struct nouveau_fence_chan *fctx = nouveau_fctx(fence); + unsigned long flags; + + spin_lock_irqsave(&fctx->lock, flags); + if (!dma_fence_is_signaled(&fence->base)) { + dma_fence_set_error(&fence->base, -ECANCELED); + if (nouveau_fence_signal(fence)) + nvif_event_block(&fctx->event); + } + spin_unlock_irqrestore(&fctx->lock, flags); +} + bool nouveau_fence_done(struct nouveau_fence *fence) { diff --git a/drivers/gpu/drm/nouveau/nouveau_fence.h b/drivers/gpu/drm/nouveau/nouveau_fence.h index c3595c2197b5..4d8f78cd6ebc 100644 --- a/drivers/gpu/drm/nouveau/nouveau_fence.h +++ b/drivers/gpu/drm/nouveau/nouveau_fence.h @@ -29,6 +29,7 @@ void nouveau_fence_unref(struct nouveau_fence **); int nouveau_fence_emit(struct nouveau_fence *); bool nouveau_fence_done(struct nouveau_fence *); +void nouveau_fence_cancel(struct nouveau_fence *fence); int nouveau_fence_wait(struct nouveau_fence *, bool lazy, bool intr); int nouveau_fence_sync(struct nouveau_bo *, struct nouveau_channel *, bool exclusive, bool intr); diff --git a/drivers/gpu/drm/nouveau/nouveau_sched.c b/drivers/gpu/drm/nouveau/nouveau_sched.c index 460a5fb02412..2ec62059c351 100644 --- a/drivers/gpu/drm/nouveau/nouveau_sched.c +++ b/drivers/gpu/drm/nouveau/nouveau_sched.c @@ -11,6 +11,7 @@ #include "nouveau_exec.h" #include "nouveau_abi16.h" #include "nouveau_sched.h" +#include "nouveau_chan.h" #define NOUVEAU_SCHED_JOB_TIMEOUT_MS 10000 @@ -393,10 +394,23 @@ nouveau_sched_free_job(struct drm_sched_job *sched_job) nouveau_job_fini(job); } +static void +nouveau_sched_cancel_job(struct drm_sched_job *sched_job) +{ + struct nouveau_fence *fence; + struct nouveau_job *job; + + job = to_nouveau_job(sched_job); + fence = to_nouveau_fence(job->done_fence); + + nouveau_fence_cancel(fence); +} + static const struct drm_sched_backend_ops nouveau_sched_ops = { .run_job = nouveau_sched_run_job, .timedout_job = nouveau_sched_timedout_job, .free_job = nouveau_sched_free_job, + .cancel_job = nouveau_sched_cancel_job, }; static int @@ -482,7 +496,6 @@ nouveau_sched_create(struct nouveau_sched **psched, struct nouveau_drm *drm, return 0; } - static void nouveau_sched_fini(struct nouveau_sched *sched) { -- 2.49.0