[PATCH 07/12] drm/amdgpu: rework job synchronization
Christian König
ckoenig.leichtzumerken at gmail.com
Mon Jan 6 15:03:30 UTC 2020
For unlocked page table updates we need to be able
to sync to fences of a specific VM.
Signed-off-by: Christian König <christian.koenig at amd.com>
---
.../gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 6 +--
drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 8 +--
drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 3 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c | 49 ++++++++++++-------
drivers/gpu/drm/amd/amdgpu/amdgpu_sync.h | 15 ++++--
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 7 +--
drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c | 3 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_vm_sdma.c | 2 +-
8 files changed, 59 insertions(+), 34 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
index d8db5ecdf9c1..9e7889c28f3e 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
@@ -848,9 +848,9 @@ static int process_sync_pds_resv(struct amdkfd_process_info *process_info,
vm_list_node) {
struct amdgpu_bo *pd = peer_vm->root.base.bo;
- ret = amdgpu_sync_resv(NULL,
- sync, pd->tbo.base.resv,
- AMDGPU_FENCE_OWNER_KFD, false);
+ ret = amdgpu_sync_resv(NULL, sync, pd->tbo.base.resv,
+ AMDGPU_SYNC_NE_OWNER,
+ AMDGPU_FENCE_OWNER_KFD);
if (ret)
return ret;
}
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
index cf79f30c0af6..d7b5efaa091c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@@ -662,10 +662,12 @@ static int amdgpu_cs_sync_rings(struct amdgpu_cs_parser *p)
list_for_each_entry(e, &p->validated, tv.head) {
struct amdgpu_bo *bo = ttm_to_amdgpu_bo(e->tv.bo);
struct dma_resv *resv = bo->tbo.base.resv;
+ enum amdgpu_sync_mode sync_mode;
- r = amdgpu_sync_resv(p->adev, &p->job->sync, resv, &fpriv->vm,
- amdgpu_bo_explicit_sync(bo));
-
+ sync_mode = amdgpu_bo_explicit_sync(bo) ?
+ AMDGPU_SYNC_EXPLICIT : AMDGPU_SYNC_NE_OWNER;
+ r = amdgpu_sync_resv(p->adev, &p->job->sync, resv, sync_mode,
+ &fpriv->vm);
if (r)
return r;
}
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
index ca9f74585890..46c76e2e1281 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -1419,7 +1419,8 @@ int amdgpu_bo_sync_wait(struct amdgpu_bo *bo, void *owner, bool intr)
int r;
amdgpu_sync_create(&sync);
- amdgpu_sync_resv(adev, &sync, bo->tbo.base.resv, owner, false);
+ amdgpu_sync_resv(adev, &sync, bo->tbo.base.resv,
+ AMDGPU_SYNC_NE_OWNER, owner);
r = amdgpu_sync_wait(&sync, intr);
amdgpu_sync_free(&sync);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c
index a09b6b9c27d1..c124f64e7aae 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c
@@ -202,18 +202,17 @@ int amdgpu_sync_vm_fence(struct amdgpu_sync *sync, struct dma_fence *fence)
*
* @sync: sync object to add fences from reservation object to
* @resv: reservation object with embedded fence
- * @explicit_sync: true if we should only sync to the exclusive fence
+ * @mode: how owner affects which fences we sync to
+ * @owner: owner of the planned job submission
*
* Sync to the fence
*/
-int amdgpu_sync_resv(struct amdgpu_device *adev,
- struct amdgpu_sync *sync,
- struct dma_resv *resv,
- void *owner, bool explicit_sync)
+int amdgpu_sync_resv(struct amdgpu_device *adev, struct amdgpu_sync *sync,
+ struct dma_resv *resv, enum amdgpu_sync_mode mode,
+ void *owner)
{
struct dma_resv_list *flist;
struct dma_fence *f;
- void *fence_owner;
unsigned i;
int r = 0;
@@ -229,6 +228,8 @@ int amdgpu_sync_resv(struct amdgpu_device *adev,
return r;
for (i = 0; i < flist->shared_count; ++i) {
+ void *fence_owner;
+
f = rcu_dereference_protected(flist->shared[i],
dma_resv_held(resv));
/* We only want to trigger KFD eviction fences on
@@ -239,20 +240,34 @@ int amdgpu_sync_resv(struct amdgpu_device *adev,
owner != AMDGPU_FENCE_OWNER_UNDEFINED)
continue;
- if (amdgpu_sync_same_dev(adev, f)) {
- /* VM updates only sync with moves but not with user
- * command submissions or KFD evictions fences
- */
- if (owner == AMDGPU_FENCE_OWNER_VM &&
- fence_owner != AMDGPU_FENCE_OWNER_UNDEFINED)
+ /* VM updates only sync with moves but not with user
+ * command submissions or KFD evictions fences
+ */
+ if (fence_owner != AMDGPU_FENCE_OWNER_UNDEFINED &&
+ owner == AMDGPU_FENCE_OWNER_VM)
+ continue;
+
+ /* Ignore fences depending on the sync mode */
+ switch (mode) {
+ case AMDGPU_SYNC_ALWAYS:
+ break;
+
+ case AMDGPU_SYNC_NE_OWNER:
+ if (amdgpu_sync_same_dev(adev, f) &&
+ fence_owner == owner)
continue;
+ break;
- /* Ignore fence from the same owner and explicit one as
- * long as it isn't undefined.
- */
- if (owner != AMDGPU_FENCE_OWNER_UNDEFINED &&
- (fence_owner == owner || explicit_sync))
+ case AMDGPU_SYNC_EQ_OWNER:
+ if (amdgpu_sync_same_dev(adev, f) &&
+ fence_owner != owner)
+ continue;
+ break;
+
+ case AMDGPU_SYNC_EXPLICIT:
+ if (owner != AMDGPU_FENCE_OWNER_UNDEFINED)
continue;
+ break;
}
r = amdgpu_sync_fence(sync, f, false);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.h
index d62c2b81d92b..cfbe5788b8b9 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.h
@@ -31,6 +31,13 @@ struct dma_resv;
struct amdgpu_device;
struct amdgpu_ring;
+enum amdgpu_sync_mode {
+ AMDGPU_SYNC_ALWAYS,
+ AMDGPU_SYNC_NE_OWNER,
+ AMDGPU_SYNC_EQ_OWNER,
+ AMDGPU_SYNC_EXPLICIT
+};
+
/*
* Container for fences used to sync command submissions.
*/
@@ -43,11 +50,9 @@ void amdgpu_sync_create(struct amdgpu_sync *sync);
int amdgpu_sync_fence(struct amdgpu_sync *sync, struct dma_fence *f,
bool explicit);
int amdgpu_sync_vm_fence(struct amdgpu_sync *sync, struct dma_fence *fence);
-int amdgpu_sync_resv(struct amdgpu_device *adev,
- struct amdgpu_sync *sync,
- struct dma_resv *resv,
- void *owner,
- bool explicit_sync);
+int amdgpu_sync_resv(struct amdgpu_device *adev, struct amdgpu_sync *sync,
+ struct dma_resv *resv, enum amdgpu_sync_mode mode,
+ void *owner);
struct dma_fence *amdgpu_sync_peek_fence(struct amdgpu_sync *sync,
struct amdgpu_ring *ring);
struct dma_fence *amdgpu_sync_get_fence(struct amdgpu_sync *sync,
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index 81f6764f1ba6..05aeb55039f4 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -2086,8 +2086,8 @@ int amdgpu_copy_buffer(struct amdgpu_ring *ring, uint64_t src_offset,
}
if (resv) {
r = amdgpu_sync_resv(adev, &job->sync, resv,
- AMDGPU_FENCE_OWNER_UNDEFINED,
- false);
+ AMDGPU_SYNC_ALWAYS,
+ AMDGPU_FENCE_OWNER_UNDEFINED);
if (r) {
DRM_ERROR("sync failed (%d).\n", r);
goto error_free;
@@ -2171,7 +2171,8 @@ int amdgpu_fill_buffer(struct amdgpu_bo *bo,
if (resv) {
r = amdgpu_sync_resv(adev, &job->sync, resv,
- AMDGPU_FENCE_OWNER_UNDEFINED, false);
+ AMDGPU_SYNC_ALWAYS,
+ AMDGPU_FENCE_OWNER_UNDEFINED);
if (r) {
DRM_ERROR("sync failed (%d).\n", r);
goto error_free;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
index d587ffe2af8e..099ad8d7fc15 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
@@ -1098,7 +1098,8 @@ static int amdgpu_uvd_send_msg(struct amdgpu_ring *ring, struct amdgpu_bo *bo,
goto err_free;
} else {
r = amdgpu_sync_resv(adev, &job->sync, bo->tbo.base.resv,
- AMDGPU_FENCE_OWNER_UNDEFINED, false);
+ AMDGPU_SYNC_NE_OWNER,
+ AMDGPU_FENCE_OWNER_UNDEFINED);
if (r)
goto err_free;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_sdma.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_sdma.c
index 4bbd8ff778ea..3b61317c0f08 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_sdma.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_sdma.c
@@ -80,7 +80,7 @@ static int amdgpu_vm_sdma_prepare(struct amdgpu_vm_update_params *p,
return 0;
return amdgpu_sync_resv(p->adev, &p->job->sync, root->tbo.base.resv,
- owner, false);
+ AMDGPU_SYNC_NE_OWNER, owner);
}
/**
--
2.17.1
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