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amdgpu: add an environment variable that overrides the context priority

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Reviewed-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
This commit is contained in:
Marek Olšák 2023-04-13 11:01:51 -04:00
parent 7784d57166
commit 98e1db5011
1 changed files with 12 additions and 0 deletions
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12
amdgpu/amdgpu_cs.c
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@ -56,10 +56,22 @@ drm_public int amdgpu_cs_ctx_create2(amdgpu_device_handle dev,
union drm_amdgpu_ctx args;
int i, j, k;
int r;
char *override_priority;
if (!dev || !context)
return -EINVAL;
override_priority = getenv("AMD_PRIORITY");
if (override_priority) {
/* The priority is a signed integer. The variable type is
* wrong. If parsing fails, priority is unchanged.
*/
if (sscanf(override_priority, "%i", &priority) == 1) {
printf("amdgpu: context priority changed to %i\n",
priority);
}
}
gpu_context = calloc(1, sizeof(struct amdgpu_context));
if (!gpu_context)
return -ENOMEM;