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drm/amdgpu: Move fence SW fallback warning v3 

Only print the warning if there was actually some fence processed
from the SW fallback timer.

v2: Add return value to amdgpu_fence_process to let
amdgpu_fence_fallback know fences were actually
processed and then print the warning.

v3: Always return true if seq != last_seq

Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Acked-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Andrey Grodzovsky 2018-09-25 10:24:16 -04:00 committed by Alex Deucher
parent 425c31437f
commit 95d7fc4a41
2 changed files with 9 additions and 5 deletions
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10
drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
View File

@ -216,8 +216,10 @@ static void amdgpu_fence_schedule_fallback(struct amdgpu_ring *ring)
* Checks the current fence value and calculates the last
* signalled fence value. Wakes the fence queue if the
* sequence number has increased.
*
* Returns true if fence was processed
*/
void amdgpu_fence_process(struct amdgpu_ring *ring)
bool amdgpu_fence_process(struct amdgpu_ring *ring)
{
struct amdgpu_fence_driver *drv = &ring->fence_drv;
uint32_t seq, last_seq;
@ -234,7 +236,7 @@ void amdgpu_fence_process(struct amdgpu_ring *ring)
amdgpu_fence_schedule_fallback(ring);
if (unlikely(seq == last_seq))
return;
return false;
last_seq &= drv->num_fences_mask;
seq &= drv->num_fences_mask;
@ -261,6 +263,8 @@ void amdgpu_fence_process(struct amdgpu_ring *ring)
dma_fence_put(fence);
} while (last_seq != seq);
return true;
}
/**
@ -275,8 +279,8 @@ static void amdgpu_fence_fallback(struct timer_list *t)
struct amdgpu_ring *ring = from_timer(ring, t,
fence_drv.fallback_timer);
if (amdgpu_fence_process(ring))
DRM_WARN("Fence fallback timer expired on ring %s\n", ring->name);
amdgpu_fence_process(ring);
}
/**

2
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
View File

@ -97,7 +97,7 @@ void amdgpu_fence_driver_resume(struct amdgpu_device *adev);
int amdgpu_fence_emit(struct amdgpu_ring *ring, struct dma_fence **fence,
unsigned flags);
int amdgpu_fence_emit_polling(struct amdgpu_ring *ring, uint32_t *s);
void amdgpu_fence_process(struct amdgpu_ring *ring);
bool amdgpu_fence_process(struct amdgpu_ring *ring);
int amdgpu_fence_wait_empty(struct amdgpu_ring *ring);
signed long amdgpu_fence_wait_polling(struct amdgpu_ring *ring,
uint32_t wait_seq,