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| author | xinhui pan <xinhui.pan@amd.com> | 2021-09-11 09:41:29 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-09-14 15:59:58 -0400 |
| commit | 0fcfb30019d3e0b891a201e41262b926648c38b0 (patch) | |
| tree | bccd8e5b5b0e287f17d3685271ddc2a0939afc3c /drivers | |
| parent | 405a81ae3fe81a175ef51e6f4ed240744370163e (diff) | |
| download | linux-stable-0fcfb30019d3e0b891a201e41262b926648c38b0.tar.gz linux-stable-0fcfb30019d3e0b891a201e41262b926648c38b0.tar.bz2 linux-stable-0fcfb30019d3e0b891a201e41262b926648c38b0.zip | |
drm/amdgpu: Fix a race of IB test
Direct IB submission should be exclusive. So use write lock.
Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c index 97d88f3e1c4c..074ffcf0dac2 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c @@ -1358,7 +1358,7 @@ static int amdgpu_debugfs_test_ib_show(struct seq_file *m, void *unused) } /* Avoid accidently unparking the sched thread during GPU reset */ - r = down_read_killable(&adev->reset_sem); + r = down_write_killable(&adev->reset_sem); if (r) return r; @@ -1387,7 +1387,7 @@ static int amdgpu_debugfs_test_ib_show(struct seq_file *m, void *unused) kthread_unpark(ring->sched.thread); } - up_read(&adev->reset_sem); + up_write(&adev->reset_sem); pm_runtime_mark_last_busy(dev->dev); pm_runtime_put_autosuspend(dev->dev); |