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drm/amdgpu: add sched sync for amdgpu job v2

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this is an improvement for previous patch, the sched_sync is to store fence
that could be skipped as scheduled, when job is executed, we didn't need
pipeline_sync if all fences in sched_sync are signalled, otherwise insert
pipeline_sync still.

v2: handle error when adding fence to sync failed.

Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com> (v1)
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Chunming Zhou
2017-05-09 15:50:22 +08:00
committed by Alex Deucher
parent a022c54e60
commit df83d1ebc9
3 changed files with 17 additions and 5 deletions
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8
drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
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@@ -121,6 +121,7 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned num_ibs,
{
struct amdgpu_device *adev = ring->adev;
struct amdgpu_ib *ib = &ibs[0];
struct dma_fence *tmp;
bool skip_preamble, need_ctx_switch;
unsigned patch_offset = ~0;
struct amdgpu_vm *vm;
@@ -160,8 +161,13 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned num_ibs,
dev_err(adev->dev, "scheduling IB failed (%d).\n", r);
return r;
}
if (ring->funcs->emit_pipeline_sync && job && job->need_pipeline_sync)
if (ring->funcs->emit_pipeline_sync && job &&
(tmp = amdgpu_sync_get_fence(&job->sched_sync))) {
job->need_pipeline_sync = true;
amdgpu_ring_emit_pipeline_sync(ring);
dma_fence_put(tmp);
}
if (vm) {
r = amdgpu_vm_flush(ring, job);