diff options
| 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_drv.c | |
| parent | e3569fab49886123c81f18d675fb1719d73cf27d (diff) | |
| download | linux-b205795677c034a1975e75a466ad158950fde4b4.tar.gz linux-b205795677c034a1975e75a466ad158950fde4b4.tar.bz2 linux-b205795677c034a1975e75a466ad158950fde4b4.zip | |
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_drv.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c index 75bcd1789185..653a377dd342 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c @@ -705,6 +705,14 @@ MODULE_PARM_DESC(hws_gws_support, "Assume MEC2 FW supports GWS barriers (false = int queue_preemption_timeout_ms = 9000; module_param(queue_preemption_timeout_ms, int, 0644); MODULE_PARM_DESC(queue_preemption_timeout_ms, "queue preemption timeout in ms (1 = Minimum, 9000 = default)"); + +/** + * DOC: debug_evictions(bool) + * Enable extra debug messages to help determine the cause of evictions + */ +bool debug_evictions; +module_param(debug_evictions, bool, 0644); +MODULE_PARM_DESC(debug_evictions, "enable eviction debug messages (false = default)"); #endif /** |