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drm/scheduler: Job timeout handler returns status (v3)

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This patch does not change current behaviour.

The driver's job timeout handler now returns
status indicating back to the DRM layer whether
the device (GPU) is no longer available, such as
after it's been unplugged, or whether all is
normal, i.e. current behaviour.

All drivers which make use of the
drm_sched_backend_ops' .timedout_job() callback
have been accordingly renamed and return the
would've-been default value of
DRM_GPU_SCHED_STAT_NOMINAL to restart the task's
timeout timer--this is the old behaviour, and is
preserved by this patch.

v2: Use enum as the status of a driver's job
    timeout callback method.

v3: Return scheduler/device information, rather
    than task information.

Cc: Alexander Deucher <Alexander.Deucher@amd.com>
Cc: Andrey Grodzovsky <Andrey.Grodzovsky@amd.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Russell King <linux+etnaviv@armlinux.org.uk>
Cc: Christian Gmeiner <christian.gmeiner@gmail.com>
Cc: Qiang Yu <yuq825@gmail.com>
Cc: Rob Herring <robh@kernel.org>
Cc: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Cc: Steven Price <steven.price@arm.com>
Cc: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Cc: Eric Anholt <eric@anholt.net>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Luben Tuikov <luben.tuikov@amd.com>
Acked-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Acked-by: Christian König <christian.koenig@amd.com>
Acked-by: Steven Price <steven.price@arm.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/415095/
(cherry picked from commit a6a1f036c7)
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
This commit is contained in:
Luben Tuikov
2021-01-20 15:09:59 -05:00
committed by Maarten Lankhorst
parent 78e4ba40f1
commit c10983e14e
7 changed files with 52 additions and 28 deletions
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4
drivers/gpu/drm/lima/lima_sched.c
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@@ -415,7 +415,7 @@ out:
mutex_unlock(&dev->error_task_list_lock);
}
static void lima_sched_timedout_job(struct drm_sched_job *job)
static enum drm_gpu_sched_stat lima_sched_timedout_job(struct drm_sched_job *job)
{
struct lima_sched_pipe *pipe = to_lima_pipe(job->sched);
struct lima_sched_task *task = to_lima_task(job);
@@ -449,6 +449,8 @@ static void lima_sched_timedout_job(struct drm_sched_job *job)
drm_sched_resubmit_jobs(&pipe->base);
drm_sched_start(&pipe->base, true);
return DRM_GPU_SCHED_STAT_NOMINAL;
}
static void lima_sched_free_job(struct drm_sched_job *job)