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| author | Felix Kuehling <Felix.Kuehling@amd.com> | 2020-06-11 23:19:37 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-07-01 01:59:21 -0400 |
| commit | b205795677c034a1975e75a466ad158950fde4b4 (patch) | |
| tree | 131a04e30eb868e0ff6c925631d7c500f8a65c69 /drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c | |
| parent | e3569fab49886123c81f18d675fb1719d73cf27d (diff) | |
drm/amdkfd: Add eviction debug messages
Use WARN to print messages with backtrace when evictions are triggered.
This can help determine the root cause of evictions and help spot driver
bugs triggering evictions unintentionally, or help with performance tuning
by avoiding conditions that cause evictions in a specific workload.
The messages are controlled by a new module parameter that can be changed
at runtime:
echo Y > /sys/module/amdgpu/parameters/debug_evictions
echo N > /sys/module/amdgpu/parameters/debug_evictions
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Philip Yang <Philip.Yang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c index b87ca171986a..072f0e1185a8 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c @@ -275,6 +275,8 @@ int amdgpu_sync_resv(struct amdgpu_device *adev, struct amdgpu_sync *sync, continue; } + WARN(debug_evictions && fence_owner == AMDGPU_FENCE_OWNER_KFD, + "Adding eviction fence to sync obj"); r = amdgpu_sync_fence(sync, f, false); if (r) break; |