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

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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1
drivers/gpu/drm/amd/amdgpu/amdgpu.h
View File

@ -1121,7 +1121,6 @@ struct amdgpu_job {
struct amdgpu_vm *vm;
struct amdgpu_ring *ring;
struct amdgpu_sync sync;
struct amdgpu_sync dep_sync;
struct amdgpu_sync sched_sync;
struct amdgpu_ib *ibs;
struct dma_fence *fence; /* the hw fence */

14
drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
View File

@ -786,7 +786,7 @@ static int amdgpu_bo_vm_update_pte(struct amdgpu_cs_parser *p)
return r;
r = amdgpu_sync_fence(adev, &p->job->sync,
fpriv->prt_va->last_pt_update);
fpriv->prt_va->last_pt_update, false);
if (r)
return r;
@ -800,7 +800,7 @@ static int amdgpu_bo_vm_update_pte(struct amdgpu_cs_parser *p)
return r;
f = bo_va->last_pt_update;
r = amdgpu_sync_fence(adev, &p->job->sync, f);
r = amdgpu_sync_fence(adev, &p->job->sync, f, false);
if (r)
return r;
}
@ -823,7 +823,7 @@ static int amdgpu_bo_vm_update_pte(struct amdgpu_cs_parser *p)
return r;
f = bo_va->last_pt_update;
r = amdgpu_sync_fence(adev, &p->job->sync, f);
r = amdgpu_sync_fence(adev, &p->job->sync, f, false);
if (r)
return r;
}
@ -834,7 +834,7 @@ static int amdgpu_bo_vm_update_pte(struct amdgpu_cs_parser *p)
if (r)
return r;
r = amdgpu_sync_fence(adev, &p->job->sync, vm->last_update);
r = amdgpu_sync_fence(adev, &p->job->sync, vm->last_update, false);
if (r)
return r;
@ -1038,8 +1038,8 @@ static int amdgpu_cs_process_fence_dep(struct amdgpu_cs_parser *p,
amdgpu_ctx_put(ctx);
return r;
} else if (fence) {
r = amdgpu_sync_fence(p->adev, &p->job->dep_sync,
fence);
r = amdgpu_sync_fence(p->adev, &p->job->sync, fence,
true);
dma_fence_put(fence);
amdgpu_ctx_put(ctx);
if (r)
@ -1058,7 +1058,7 @@ static int amdgpu_syncobj_lookup_and_add_to_sync(struct amdgpu_cs_parser *p,
if (r)
return r;
r = amdgpu_sync_fence(p->adev, &p->job->dep_sync, fence);
r = amdgpu_sync_fence(p->adev, &p->job->sync, fence, true);
dma_fence_put(fence);
return r;

2
drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
View File

@ -164,7 +164,7 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned num_ibs,
}
if (ring->funcs->emit_pipeline_sync && job &&
((tmp = amdgpu_sync_get_fence(&job->sched_sync)) ||
((tmp = amdgpu_sync_get_fence(&job->sched_sync, NULL)) ||
amdgpu_vm_need_pipeline_sync(ring, job))) {
need_pipe_sync = true;
dma_fence_put(tmp);

22
drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
View File

@ -60,7 +60,6 @@ int amdgpu_job_alloc(struct amdgpu_device *adev, unsigned num_ibs,
(*job)->num_ibs = num_ibs;
amdgpu_sync_create(&(*job)->sync);
amdgpu_sync_create(&(*job)->dep_sync);
amdgpu_sync_create(&(*job)->sched_sync);
(*job)->vram_lost_counter = atomic_read(&adev->vram_lost_counter);
@ -104,7 +103,6 @@ static void amdgpu_job_free_cb(struct amd_sched_job *s_job)
amdgpu_ring_priority_put(job->ring, s_job->s_priority);
dma_fence_put(job->fence);
amdgpu_sync_free(&job->sync);
amdgpu_sync_free(&job->dep_sync);
amdgpu_sync_free(&job->sched_sync);
kfree(job);
}
@ -115,7 +113,6 @@ void amdgpu_job_free(struct amdgpu_job *job)
dma_fence_put(job->fence);
amdgpu_sync_free(&job->sync);
amdgpu_sync_free(&job->dep_sync);
amdgpu_sync_free(&job->sched_sync);
kfree(job);
}
@ -149,17 +146,18 @@ static struct dma_fence *amdgpu_job_dependency(struct amd_sched_job *sched_job,
{
struct amdgpu_job *job = to_amdgpu_job(sched_job);
struct amdgpu_vm *vm = job->vm;
struct dma_fence *fence = amdgpu_sync_get_fence(&job->dep_sync);
bool explicit = false;
int r;
struct dma_fence *fence = amdgpu_sync_get_fence(&job->sync, &explicit);
if (amd_sched_dependency_optimized(fence, s_entity)) {
r = amdgpu_sync_fence(job->adev, &job->sched_sync, fence);
if (r)
DRM_ERROR("Error adding fence to sync (%d)\n", r);
if (fence && explicit) {
if (amd_sched_dependency_optimized(fence, s_entity)) {
r = amdgpu_sync_fence(job->adev, &job->sched_sync, fence, false);
if (r)
DRM_ERROR("Error adding fence to sync (%d)\n", r);
}
}
if (!fence)
fence = amdgpu_sync_get_fence(&job->sync);
while (fence == NULL && vm && !job->vm_id) {
struct amdgpu_ring *ring = job->ring;
@ -169,7 +167,7 @@ static struct dma_fence *amdgpu_job_dependency(struct amd_sched_job *sched_job,
if (r)
DRM_ERROR("Error getting VM ID (%d)\n", r);
fence = amdgpu_sync_get_fence(&job->sync);
fence = amdgpu_sync_get_fence(&job->sync, NULL);
}
return fence;

15
drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c
View File

@ -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);

4
drivers/gpu/drm/amd/amdgpu/amdgpu_sync.h
View File

@ -41,7 +41,7 @@ struct amdgpu_sync {
void amdgpu_sync_create(struct amdgpu_sync *sync);
int amdgpu_sync_fence(struct amdgpu_device *adev, struct amdgpu_sync *sync,
struct dma_fence *f);
struct dma_fence *f, bool explicit);
int amdgpu_sync_resv(struct amdgpu_device *adev,
struct amdgpu_sync *sync,
struct reservation_object *resv,
@ -49,7 +49,7 @@ int amdgpu_sync_resv(struct amdgpu_device *adev,
bool explicit_sync);
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);
struct dma_fence *amdgpu_sync_get_fence(struct amdgpu_sync *sync, bool *explicit);
int amdgpu_sync_wait(struct amdgpu_sync *sync, bool intr);
void amdgpu_sync_free(struct amdgpu_sync *sync);
int amdgpu_sync_init(void);

12
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
View File

@ -488,7 +488,7 @@ static int amdgpu_vm_grab_reserved_vmid_locked(struct amdgpu_vm *vm,
id->pd_gpu_addr = 0;
tmp = amdgpu_sync_peek_fence(&id->active, ring);
if (tmp) {
r = amdgpu_sync_fence(adev, sync, tmp);
r = amdgpu_sync_fence(adev, sync, tmp, false);
return r;
}
}
@ -496,7 +496,7 @@ static int amdgpu_vm_grab_reserved_vmid_locked(struct amdgpu_vm *vm,
/* Good we can use this VMID. Remember this submission as
* user of the VMID.
*/
r = amdgpu_sync_fence(ring->adev, &id->active, fence);
r = amdgpu_sync_fence(ring->adev, &id->active, fence, false);
if (r)
goto out;
@ -583,7 +583,7 @@ int amdgpu_vm_grab_id(struct amdgpu_vm *vm, struct amdgpu_ring *ring,
}
r = amdgpu_sync_fence(ring->adev, sync, &array->base);
r = amdgpu_sync_fence(ring->adev, sync, &array->base, false);
dma_fence_put(&array->base);
if (r)
goto error;
@ -626,7 +626,7 @@ int amdgpu_vm_grab_id(struct amdgpu_vm *vm, struct amdgpu_ring *ring,
/* Good we can use this VMID. Remember this submission as
* user of the VMID.
*/
r = amdgpu_sync_fence(ring->adev, &id->active, fence);
r = amdgpu_sync_fence(ring->adev, &id->active, fence, false);
if (r)
goto error;
@ -646,7 +646,7 @@ int amdgpu_vm_grab_id(struct amdgpu_vm *vm, struct amdgpu_ring *ring,
id = idle;
/* Remember this submission as user of the VMID */
r = amdgpu_sync_fence(ring->adev, &id->active, fence);
r = amdgpu_sync_fence(ring->adev, &id->active, fence, false);
if (r)
goto error;
@ -1657,7 +1657,7 @@ static int amdgpu_vm_bo_update_mapping(struct amdgpu_device *adev,
addr = 0;
}
r = amdgpu_sync_fence(adev, &job->sync, exclusive);
r = amdgpu_sync_fence(adev, &job->sync, exclusive, false);
if (r)
goto error_free;