drm/amdgpu: use a timer for fence fallback
Less overhead than a work item and also adds proper cleanup handling.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 615ce6d..3630cb5 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -389,7 +389,6 @@
* Fences.
*/
struct amdgpu_fence_driver {
- struct amdgpu_ring *ring;
uint64_t gpu_addr;
volatile uint32_t *cpu_addr;
/* sync_seq is protected by ring emission lock */
@@ -398,7 +397,7 @@
bool initialized;
struct amdgpu_irq_src *irq_src;
unsigned irq_type;
- struct delayed_work lockup_work;
+ struct timer_list fallback_timer;
wait_queue_head_t fence_queue;
};