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drm/amdgpu: Get rid of dep_sync as a seperate object.

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Instead mark fence as explicit in it's amdgpu_sync_entry.

v2:
Fix use after free bug and add new parameter description.
Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Andrey Grodzovsky
2017-11-13 14:47:52 -05:00
committed by Alex Deucher
parent 97489129c2
commit cebb52b7bc
7 changed files with 36 additions and 34 deletions
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15
drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c
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@@ -35,6 +35,7 @@
struct amdgpu_sync_entry {
struct hlist_node node;
struct dma_fence *fence;
bool explicit;
};
static struct kmem_cache *amdgpu_sync_slab;
@@ -141,7 +142,7 @@ static bool amdgpu_sync_add_later(struct amdgpu_sync *sync, struct dma_fence *f)
*
*/
int amdgpu_sync_fence(struct amdgpu_device *adev, struct amdgpu_sync *sync,
struct dma_fence *f)
struct dma_fence *f, bool explicit)
{
struct amdgpu_sync_entry *e;
@@ -159,6 +160,8 @@ int amdgpu_sync_fence(struct amdgpu_device *adev, struct amdgpu_sync *sync,
if (!e)
return -ENOMEM;
e->explicit = explicit;
hash_add(sync->fences, &e->node, f->context);
e->fence = dma_fence_get(f);
return 0;
@@ -189,7 +192,7 @@ int amdgpu_sync_resv(struct amdgpu_device *adev,
/* always sync to the exclusive fence */
f = reservation_object_get_excl(resv);
r = amdgpu_sync_fence(adev, sync, f);
r = amdgpu_sync_fence(adev, sync, f, false);
if (explicit_sync)
return r;
@@ -220,7 +223,7 @@ int amdgpu_sync_resv(struct amdgpu_device *adev,
continue;
}
r = amdgpu_sync_fence(adev, sync, f);
r = amdgpu_sync_fence(adev, sync, f, false);
if (r)
break;
}
@@ -275,19 +278,21 @@ struct dma_fence *amdgpu_sync_peek_fence(struct amdgpu_sync *sync,
* amdgpu_sync_get_fence - get the next fence from the sync object
*
* @sync: sync object to use
* @explicit: true if the next fence is explicit
*
* Get and removes the next fence from the sync object not signaled yet.
*/
struct dma_fence *amdgpu_sync_get_fence(struct amdgpu_sync *sync)
struct dma_fence *amdgpu_sync_get_fence(struct amdgpu_sync *sync, bool *explicit)
{
struct amdgpu_sync_entry *e;
struct hlist_node *tmp;
struct dma_fence *f;
int i;
hash_for_each_safe(sync->fences, i, tmp, e, node) {
f = e->fence;
if (explicit)
*explicit = e->explicit;
hash_del(&e->node);
kmem_cache_free(amdgpu_sync_slab, e);