From nobody Wed Oct 8 07:24:30 2025 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4E35E273818; Tue, 1 Jul 2025 13:22:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751376164; cv=none; b=N5esQMU654XqHoAbFa0++NJiPfodcjk/uJmQJd7C6FLemo4SnzBu5e+macbBSQnGgxgoWwvFz7FF7EJDOxJ8PIEkRAWV/Ov5PKzr/a1BEB9axncvNqcN+Qb15sesbs4raylxyKHx3Gc3MX2pm79T3o7fnpGeDXDh9W5KlI2xRqg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751376164; c=relaxed/simple; bh=YPEvwsrhEYilovZE/FzKLWSDVL/XkoOF8+zmDx8isVw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=OsO0rOQZO4pyfeEh12FN4vJObE/0b2diS0XkR5vzuCVlk5sFmLTKLFrkFQ3PU6UwUphC2iMos+M3KE/7T5XqgMCkmrfoijfR3stVd6jvBvAUGqt0Gg/ACLdtZrFoYj2SZhirBhNOhC0/YnML3gX2Raci8HVnfpKnhHH6GTuL/f4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=eJWzypBb; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="eJWzypBb" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 37C21C4CEEB; Tue, 1 Jul 2025 13:22:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1751376164; bh=YPEvwsrhEYilovZE/FzKLWSDVL/XkoOF8+zmDx8isVw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=eJWzypBbI9YtnzazLXUr4k+L5FjPNNBvtjlZBTnC3q4zfJuLUhsK2AdaT28MFA7Oq +W0ZCKoackXsY2UqpkVVQp+OoferUgFLtK0FsjuPno3gSVhQlMZKQg6AKkNtTLysqg D67DCdkCRGIUQb4LjYZWQ0FtTXTCX4HehKAB+AlhD7jUdJr2nXXQvjNVaSpm2xMyql WiINbodPorB0fIEvQqF4ysV6XCKckJsdMmdBebF5WJLH3v5f4Ndmx0Ns1V4Gy5aOHS rVREw5a4Uefw49RsBhOdZdUKx0XvY29OFO2+5MVIZp/bT76+lcWQraYxP/TIdagE9L UYx/PiOjyy9Pw== 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, linaro-mm-sig@lists.linaro.org Subject: [PATCH 5/6] drm/nouveau: Add new callback for scheduler teardown Date: Tue, 1 Jul 2025 15:21:43 +0200 Message-ID: <20250701132142.76899-8-phasta@kernel.org> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250701132142.76899-3-phasta@kernel.org> References: <20250701132142.76899-3-phasta@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" 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/nouv= eau/nouveau_fence.c index 869d4335c0f4..9f345a008717 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; } =20 +void +nouveau_fence_cancel(struct nouveau_fence *fence) +{ + struct nouveau_fence_chan *fctx =3D nouveau_fctx(fence); + unsigned long flags; + + spin_lock_irqsave(&fctx->lock, flags); + if (!dma_fence_is_signaled_locked(&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/nouv= eau/nouveau_fence.h index 183dd43ecfff..9957a919bd38 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 **); =20 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 *, boo= l exclusive, bool intr); =20 diff --git a/drivers/gpu/drm/nouveau/nouveau_sched.c b/drivers/gpu/drm/nouv= eau/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" =20 #define NOUVEAU_SCHED_JOB_TIMEOUT_MS 10000 =20 @@ -393,10 +394,23 @@ nouveau_sched_free_job(struct drm_sched_job *sched_jo= b) nouveau_job_fini(job); } =20 +static void +nouveau_sched_cancel_job(struct drm_sched_job *sched_job) +{ + struct nouveau_fence *fence; + struct nouveau_job *job; + + job =3D to_nouveau_job(sched_job); + fence =3D to_nouveau_fence(job->done_fence); + + nouveau_fence_cancel(fence); +} + static const struct drm_sched_backend_ops nouveau_sched_ops =3D { .run_job =3D nouveau_sched_run_job, .timedout_job =3D nouveau_sched_timedout_job, .free_job =3D nouveau_sched_free_job, + .cancel_job =3D nouveau_sched_cancel_job, }; =20 static int @@ -482,7 +496,6 @@ nouveau_sched_create(struct nouveau_sched **psched, str= uct nouveau_drm *drm, return 0; } =20 - static void nouveau_sched_fini(struct nouveau_sched *sched) { --=20 2.49.0