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From: Philipp Stanner <phasta@kernel.org>
To: "Luben Tuikov" <ltuikov89@gmail.com>,
	"Matthew Brost" <matthew.brost@intel.com>,
	"Danilo Krummrich" <dakr@kernel.org>,
	"Philipp Stanner" <pstanner@redhat.com>,
	"Maarten Lankhorst" <maarten.lankhorst@linux.intel.com>,
	"Maxime Ripard" <mripard@kernel.org>,
	"Thomas Zimmermann" <tzimmermann@suse.de>,
	"David Airlie" <airlied@gmail.com>,
	"Simona Vetter" <simona@ffwll.ch>,
	"Sumit Semwal" <sumit.semwal@linaro.org>,
	"Christian König" <christian.koenig@amd.com>
Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
	linux-media@vger.kernel.org, linaro-mm-sig@lists.linaro.org,
	Philipp Stanner <phasta@kernel.org>
Subject: [PATCH 2/3] drm/sched: Adjust outdated docu for run_job()
Date: Thu,  9 Jan 2025 14:37:11 +0100	[thread overview]
Message-ID: <20250109133710.39404-5-phasta@kernel.org> (raw)
In-Reply-To: <20250109133710.39404-2-phasta@kernel.org>

The documentation for drm_sched_backend_ops.run_job() mentions a certain
function called drm_sched_job_recovery(). This function does not exist.
What's actually meant is drm_sched_resubmit_jobs(), which is by now also
deprecated.

Remove the mention of the deprecated function.

Discourage the behavior of drm_sched_backend_ops.run_job() being called
multiple times for the same job.

Signed-off-by: Philipp Stanner <phasta@kernel.org>
---
 include/drm/gpu_scheduler.h | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/include/drm/gpu_scheduler.h b/include/drm/gpu_scheduler.h
index d5cd2a78f27c..c4e65f9f7f22 100644
--- a/include/drm/gpu_scheduler.h
+++ b/include/drm/gpu_scheduler.h
@@ -421,9 +421,12 @@ struct drm_sched_backend_ops {
 
 	/**
 	 * @run_job: Called to execute the job once all of the dependencies
-	 * have been resolved. This may be called multiple times, if
-	 * timedout_job() has happened and drm_sched_job_recovery() decides to
-	 * try it again.
+	 * have been resolved.
+	 *
+	 * The deprecated drm_sched_resubmit_jobs() (called from
+	 * drm_sched_backend_ops.timedout_job()) can invoke this again with the
+	 * same parameters. Doing this is strongly discouraged because it
+	 * violates dma_fence rules.
 	 *
 	 * @sched_job: the job to run
 	 *
-- 
2.47.1


  parent reply	other threads:[~2025-01-09 13:37 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-01-09 13:37 [PATCH 0/3] drm/sched: Documentation and refcount improvements Philipp Stanner
2025-01-09 13:37 ` [PATCH 1/3] drm/sched: Document run_job() refcount hazard Philipp Stanner
2025-01-09 13:44   ` Tvrtko Ursulin
2025-01-09 13:47     ` Philipp Stanner
2025-01-09 14:01   ` Christian König
2025-01-13 12:07     ` Philipp Stanner
2025-01-09 14:30   ` Danilo Krummrich
2025-01-10  9:14     ` Philipp Stanner
2025-01-09 13:37 ` Philipp Stanner [this message]
2025-01-13 10:20   ` [PATCH 2/3] drm/sched: Adjust outdated docu for run_job() Danilo Krummrich
2025-01-09 13:37 ` [PATCH 3/3] drm/sched: Update timedout_job()'s documentation Philipp Stanner
2025-01-13 11:46   ` Danilo Krummrich
2025-01-20 10:07     ` Philipp Stanner

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