diff options
| author | Christian König <christian.koenig@amd.com> | 2016-02-11 17:48:30 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2016-02-17 01:24:07 +0300 |
| commit | c3874b758ad52708ffdbab3e7c58e70167ce5024 (patch) | |
| tree | d89f00c16563e854584c47ea144b5e2e7633bafd /drivers/gpu/drm/amd/amdgpu/amdgpu_display.c | |
| parent | 6800e2ea2e74635e5386fc4bb43b0b69edd85a19 (diff) | |
| download | linux-c3874b758ad52708ffdbab3e7c58e70167ce5024.tar.xz | |
drm/amdgpu: stop blocking for page filp fences
Just register an callback and reschedule the work item if necessary.
Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_display.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_display.c | 43 |
1 files changed, 27 insertions, 16 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c index 1d6ef1a95e74..edf91593ac87 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c @@ -35,24 +35,32 @@ #include <drm/drm_crtc_helper.h> #include <drm/drm_edid.h> -static void amdgpu_flip_wait_fence(struct amdgpu_device *adev, - struct fence **f) +static void amdgpu_flip_callback(struct fence *f, struct fence_cb *cb) { - long r; + struct amdgpu_flip_work *work = + container_of(cb, struct amdgpu_flip_work, cb); + struct amdgpu_device *adev = work->adev; + struct amdgpu_crtc *amdgpu_crtc = adev->mode_info.crtcs[work->crtc_id]; - if (*f == NULL) - return; + fence_put(f); + queue_work(amdgpu_crtc->pflip_queue, &work->flip_work); +} - r = fence_wait(*f, false); - if (r) - DRM_ERROR("failed to wait on page flip fence (%ld)!\n", r); +static bool amdgpu_flip_handle_fence(struct amdgpu_flip_work *work, + struct fence **f) +{ + struct fence *fence= *f; + + if (fence == NULL) + return false; - /* We continue with the page flip even if we failed to wait on - * the fence, otherwise the DRM core and userspace will be - * confused about which BO the CRTC is scanning out - */ - fence_put(*f); *f = NULL; + + if (!fence_add_callback(fence, &work->cb, amdgpu_flip_callback)) + return true; + + fence_put(*f); + return false; } static void amdgpu_flip_work_func(struct work_struct *__work) @@ -68,9 +76,12 @@ static void amdgpu_flip_work_func(struct work_struct *__work) int vpos, hpos, stat, min_udelay; struct drm_vblank_crtc *vblank = &crtc->dev->vblank[work->crtc_id]; - amdgpu_flip_wait_fence(adev, &work->excl); + if (amdgpu_flip_handle_fence(work, &work->excl)) + return; + for (i = 0; i < work->shared_count; ++i) - amdgpu_flip_wait_fence(adev, &work->shared[i]); + if (amdgpu_flip_handle_fence(work, &work->shared[i])) + return; /* We borrow the event spin lock for protecting flip_status */ spin_lock_irqsave(&crtc->dev->event_lock, flags); @@ -234,7 +245,7 @@ int amdgpu_crtc_page_flip(struct drm_crtc *crtc, /* update crtc fb */ crtc->primary->fb = fb; spin_unlock_irqrestore(&crtc->dev->event_lock, flags); - queue_work(amdgpu_crtc->pflip_queue, &work->flip_work); + amdgpu_flip_work_func(&work->flip_work); return 0; vblank_cleanup: |