6.10-stable review patch. If anyone has any objections, please let me know.
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From: Lucas Stach l.stach@pengutronix.de
commit 704d3d60fec451f37706368d9d3e320322978986 upstream.
Since 45ecaea73883 ("drm/sched: Partial revert of 'drm/sched: Keep s_fence->parent pointer'") still active jobs aren't put back in the pending list on drm_sched_start(), as they don't have a active parent fence anymore, so if the GPU is still working and the timeout is extended, all currently active jobs will be freed.
To avoid prematurely freeing jobs that are still active on the GPU, don't block the scheduler until we are fully committed to actually reset the GPU.
As the current job is already removed from the pending list and will not be put back when drm_sched_start() isn't called, we must make sure to put the job back on the pending list when extending the timeout.
Cc: stable@vger.kernel.org #6.0 Signed-off-by: Lucas Stach l.stach@pengutronix.de Reviewed-by: Philipp Zabel p.zabel@pengutronix.de Reviewed-by: Christian Gmeiner cgmeiner@igalia.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/etnaviv/etnaviv_sched.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-)
--- a/drivers/gpu/drm/etnaviv/etnaviv_sched.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_sched.c @@ -38,9 +38,6 @@ static enum drm_gpu_sched_stat etnaviv_s u32 dma_addr; int change;
- /* block scheduler */ - drm_sched_stop(&gpu->sched, sched_job); - /* * If the GPU managed to complete this jobs fence, the timout is * spurious. Bail out. @@ -63,6 +60,9 @@ static enum drm_gpu_sched_stat etnaviv_s goto out_no_timeout; }
+ /* block scheduler */ + drm_sched_stop(&gpu->sched, sched_job); + if(sched_job) drm_sched_increase_karma(sched_job);
@@ -76,8 +76,7 @@ static enum drm_gpu_sched_stat etnaviv_s return DRM_GPU_SCHED_STAT_NOMINAL;
out_no_timeout: - /* restart scheduler after GPU is usable again */ - drm_sched_start(&gpu->sched, true); + list_add(&sched_job->list, &sched_job->sched->pending_list); return DRM_GPU_SCHED_STAT_NOMINAL; }