Reference in a new issue

Blame

Copy permalink

Reference in a new issue

Copy permalink

Lin.Cao f5ee8a39f0 drm/sched: Remove optimization that causes hang when killing dependent jobs ... commit 15f77764e9 upstream. When application A submits jobs and application B submits a job with a dependency on A's fence, the normal flow wakes up the scheduler after processing each job. However, the optimization in drm_sched_entity_add_dependency_cb() uses a callback that only clears dependencies without waking up the scheduler. When application A is killed before its jobs can run, the callback gets triggered but only clears the dependency without waking up the scheduler, causing the scheduler to enter sleep state and application B to hang. Remove the optimization by deleting drm_sched_entity_clear_dep() and its usage, ensuring the scheduler is always woken up when dependencies are cleared. Fixes: 777dbd458c ("drm/amdgpu: drop a dummy wakeup scheduler") Cc: stable@vger.kernel.org # v4.6+ Signed-off-by: Lin.Cao <lincao12@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Philipp Stanner <phasta@kernel.org> Link: https://lore.kernel.org/r/20250717084453.921097-1-lincao12@amd.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		History 2025-08-01 09:48:42 +01:00
..
drm	drm/sched: Remove optimization that causes hang when killing dependent jobs	2025-08-01 09:48:42 +01:00
host1x	gpu: host1x: Do not assume that a NULL domain means no DMA IOMMU	2025-03-28 22:03:27 +01:00
ipu-v3	Driver core changes for 6.11-rc1	2024-07-25 10:42:22 -07:00
trace	gpu/trace: add a gpu total memory usage tracepoint	2020-03-03 17:52:41 -05:00
vga	drm: Do delayed switcheroo in drm_lastclose()	2024-08-13 16:21:07 +02:00
Makefile	gpu: host1x: Add context bus	2022-06-01 11:50:42 +02:00