From: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Date: Mon, 13 Nov 2017 14:47:52 -0500
Subject: drm/amdgpu: Get rid of dep_sync as a seperate object.
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Git-commit: cebb52b7bc325863600aff930407bba773010938
Patch-mainline: v4.16-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
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>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu.h | 1 -
drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 14 +++++++-------
drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c | 2 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_job.c | 22 ++++++++++------------
drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c | 15 ++++++++++-----
drivers/gpu/drm/amd/amdgpu/amdgpu_sync.h | 4 ++--
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 12 ++++++------
7 files changed, 36 insertions(+), 34 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -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 */
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@@ -786,7 +786,7 @@ static int amdgpu_bo_vm_update_pte(struc
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(struc
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(struc
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(struc
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(s
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
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;
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
@@ -164,7 +164,7 @@ int amdgpu_ib_schedule(struct amdgpu_rin
}
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);
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
@@ -60,7 +60,6 @@ int amdgpu_job_alloc(struct amdgpu_devic
(*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 am
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 *
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_depe
{
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_depe
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;
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c
@@ -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
*
*/
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_devi
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_devic
/* 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_devic
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
* 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);
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.h
@@ -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_devic
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);
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -488,7 +488,7 @@ static int amdgpu_vm_grab_reserved_vmid_
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_
/* 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 *
}
- 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 *
/* 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 *
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(s
addr = 0;
}
- r = amdgpu_sync_fence(adev, &job->sync, exclusive);
+ r = amdgpu_sync_fence(adev, &job->sync, exclusive, false);
if (r)
goto error_free;