Am 10.05.2017 um 11:42 schrieb Chunming Zhou:
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.
Change-Id: I26d3a2794272ba94b25753d4bf367326d12f6939
Signed-off-by: Chunming Zhou <david1.z...@amd.com>
Reviewed-by: Christian König <christian.koe...@amd.com> for the whole
series.
---
drivers/gpu/drm/amd/amdgpu/amdgpu.h | 1 +
drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c | 7 ++++++-
drivers/gpu/drm/amd/amdgpu/amdgpu_job.c | 13 +++++++++----
3 files changed, 16 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 787acd7..ef018bf 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -1162,6 +1162,7 @@ struct amdgpu_job {
struct amdgpu_vm *vm;
struct amdgpu_ring *ring;
struct amdgpu_sync sync;
+ struct amdgpu_sync sched_sync;
struct amdgpu_ib *ibs;
struct fence *fence; /* the hw fence */
uint32_t preamble_status;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
index 2c6624d..86ad507 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
@@ -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 fence *tmp;
bool skip_preamble, need_ctx_switch;
unsigned patch_offset = ~0;
struct amdgpu_vm *vm;
@@ -167,8 +168,12 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned
num_ibs,
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);
+ fence_put(tmp);
+ }
if (vm) {
amdgpu_ring_insert_nop(ring, extra_nop); /* prevent CE go too
fast than DE */
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
index cfa97ab..ee7c9de 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
@@ -60,6 +60,7 @@ int amdgpu_job_alloc(struct amdgpu_device *adev, unsigned
num_ibs,
(*job)->need_pipeline_sync = false;
amdgpu_sync_create(&(*job)->sync);
+ amdgpu_sync_create(&(*job)->sched_sync);
return 0;
}
@@ -98,6 +99,7 @@ static void amdgpu_job_free_cb(struct amd_sched_job *s_job)
fence_put(job->fence);
amdgpu_sync_free(&job->sync);
+ amdgpu_sync_free(&job->sched_sync);
kfree(job);
}
@@ -107,6 +109,7 @@ void amdgpu_job_free(struct amdgpu_job *job)
fence_put(job->fence);
amdgpu_sync_free(&job->sync);
+ amdgpu_sync_free(&job->sched_sync);
kfree(job);
}
@@ -139,10 +142,10 @@ static struct fence *amdgpu_job_dependency(struct amd_sched_job *sched_job)
struct amdgpu_vm *vm = job->vm;
struct fence *fence = amdgpu_sync_get_fence(&job->sync);
+ int r;
while (fence == NULL && vm && !job->vm_id) {
struct amdgpu_ring *ring = job->ring;
- int r;
r = amdgpu_vm_grab_id(vm, ring, &job->sync,
&job->base.s_fence->finished,
@@ -153,9 +156,11 @@ static struct fence *amdgpu_job_dependency(struct
amd_sched_job *sched_job)
fence = amdgpu_sync_get_fence(&job->sync);
}
- if (amd_sched_dependency_optimized(fence, sched_job->s_entity))
- job->need_pipeline_sync = true;
-
+ if (amd_sched_dependency_optimized(fence, sched_job->s_entity)) {
+ r = amdgpu_sync_fence(job->adev, &job->sched_sync, fence);
+ if (r)
+ DRM_ERROR("Error adding fence to sync (%d)\n", r);
+ }
return fence;
}
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