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| author | Philip Yang <Philip.Yang@amd.com> | 2018-12-05 14:03:43 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-05-24 12:21:01 -0500 |
| commit | 89cd9d23e9a74d94f0db5bbbaf2ef1f6ede36ae5 (patch) | |
| tree | 9f046a94d4a043b1cf5beddcb1b0e27395156912 /drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h | |
| parent | 2c5a51f57042f9d686d72b96a41eb81dbfb86a64 (diff) | |
| download | blackbird-op-linux-89cd9d23e9a74d94f0db5bbbaf2ef1f6ede36ae5.tar.gz blackbird-op-linux-89cd9d23e9a74d94f0db5bbbaf2ef1f6ede36ae5.zip | |
drm/amdkfd: avoid HMM change cause circular lock
There is circular lock between gfx and kfd path with HMM change:
lock(dqm) -> bo::reserve -> amdgpu_mn_lock
To avoid this, move init/unint_mqd() out of lock(dqm), to remove nested
locking between mmap_sem and bo::reserve. The locking order
is: bo::reserve -> amdgpu_mn_lock(p->mn)
Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h')
0 files changed, 0 insertions, 0 deletions
