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android_kernel_motorola_sm6375/drivers/gpu
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Filename Latest commit message Latest commit date
Philip Yang 0b2cb9ea6b drm/amdkfd: KFD release_work possible circular locking 
[ Upstream commit 1b9366c601039d60546794c63fbb83ce8e53b978 ]

If waiting for gpu reset done in KFD release_work, thers is WARNING:
possible circular locking dependency detected

  #2  kfd_create_process
        kfd_process_mutex
          flush kfd release work

  #1  kfd release work
        wait for amdgpu reset work

  #0  amdgpu_device_gpu_reset
        kgd2kfd_pre_reset
          kfd_process_mutex

  Possible unsafe locking scenario:

        CPU0                    CPU1
        ----                    ----
   lock((work_completion)(&p->release_work));
                  lock((wq_completion)kfd_process_wq);
                  lock((work_completion)(&p->release_work));
   lock((wq_completion)amdgpu-reset-dev);

To fix this, KFD create process move flush release work outside
kfd_process_mutex.

Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-06-04 14:32:32 +02:00
..
drm drm/amdkfd: KFD release_work possible circular locking 2025-06-04 14:32:32 +02:00
host1x gpu: host1x: Do not setup DMA for virtual devices 2024-05-17 11:43:52 +02:00
ipu-v3
vga
Makefile