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drm/amdgpu: Put enable gfx off feature to a delay thread

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delay to enable gfx off feature to avoid gfx on/off frequently
suggested by Alex and Evan.

Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Rex Zhu
2018-07-27 21:06:30 +08:00
committed by Alex Deucher
parent d23ee13fba
commit 1e317b99f0
3 changed files with 23 additions and 2 deletions
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2
drivers/gpu/drm/amd/amdgpu/amdgpu.h
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@@ -954,6 +954,8 @@ struct amdgpu_gfx {
bool gfx_off_state; /* true: enabled, false: disabled */
struct mutex gfx_off_mutex;
uint32_t gfx_off_req_count; /* default 1, enable gfx off: dec 1, disable gfx off: add 1 */
struct delayed_work gfx_off_delay_work;
/* pipe reservation */
struct mutex pipe_reserve_mutex;
DECLARE_BITMAP (pipe_reserve_bitmap, AMDGPU_MAX_COMPUTE_QUEUES);