Add few optimizations to userq fence driver.
v1:(Christian):
- Remove unnecessary comments.
- In drm_exec_init call give num_bo_handles as last parameter it would
making allocation of the array more efficient
- Handle return value of __xa_store() and improve the error handling of
amdgpu_userq_fence_driver_alloc().
v2:(Christian):
- Revert userq_xa xarray init to XA_FLAGS_LOCK_IRQ.
- move the xa_unlock before the error check of the call xa_err(__xa_store())
and moved this change to a separate patch as this is adding a missing error
handling.
- Removed the unnecessary comments.
Signed-off-by: Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@xxxxxxx>
---
.../gpu/drm/amd/amdgpu/amdgpu_userq_fence.c | 44 ++++++++++++-------
.../gpu/drm/amd/amdgpu/amdgpu_userq_fence.h | 2 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_userqueue.c | 6 +--
.../gpu/drm/amd/include/amdgpu_userqueue.h | 2 +-
4 files changed, 32 insertions(+), 22 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_userq_fence.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_userq_fence.c
index 8d2a0331cd96..f3576c31428c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_userq_fence.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_userq_fence.c
@@ -76,7 +76,8 @@ int amdgpu_userq_fence_driver_alloc(struct amdgpu_device *adev,
fence_drv = kzalloc(sizeof(*fence_drv), GFP_KERNEL);
if (!fence_drv) {
DRM_ERROR("Failed to allocate memory for fence driver\n");
- return -ENOMEM;
+ r = -ENOMEM;
+ goto free_fence_drv;
}
/* Acquire seq64 memory */
@@ -84,7 +85,8 @@ int amdgpu_userq_fence_driver_alloc(struct amdgpu_device *adev,
&fence_drv->cpu_addr);
if (r) {
kfree(fence_drv);
- return -ENOMEM;
+ r = -ENOMEM;
+ goto free_seq64;
}
memset(fence_drv->cpu_addr, 0, sizeof(u64));
@@ -94,7 +96,7 @@ int amdgpu_userq_fence_driver_alloc(struct amdgpu_device *adev,
spin_lock_init(&fence_drv->fence_list_lock);
fence_drv->adev = adev;
- fence_drv->uq_fence_drv_xa_ref = &userq->uq_fence_drv_xa;
+ fence_drv->fence_drv_xa_ptr = &userq->fence_drv_xa;
fence_drv->context = dma_fence_context_alloc(1);
get_task_comm(fence_drv->timeline_name, current);
@@ -106,6 +108,13 @@ int amdgpu_userq_fence_driver_alloc(struct amdgpu_device *adev,
userq->fence_drv = fence_drv;
return 0;
+
+free_seq64:
+ amdgpu_seq64_free(adev, fence_drv->gpu_addr);
+free_fence_drv:
+ kfree(fence_drv);
+
+ return r;
}
void amdgpu_userq_fence_driver_process(struct amdgpu_userq_fence_driver *fence_drv)
@@ -147,7 +156,7 @@ void amdgpu_userq_fence_driver_destroy(struct kref *ref)
struct amdgpu_device *adev = fence_drv->adev;
struct amdgpu_userq_fence *fence, *tmp;
struct xarray *xa = &adev->userq_xa;
- unsigned long index;
+ unsigned long index, flags;
struct dma_fence *f;
spin_lock(&fence_drv->fence_list_lock);
@@ -164,11 +173,11 @@ void amdgpu_userq_fence_driver_destroy(struct kref *ref)
}
spin_unlock(&fence_drv->fence_list_lock);
- xa_lock(xa);
+ xa_lock_irqsave(xa, flags);
xa_for_each(xa, index, xa_fence_drv)
if (xa_fence_drv == fence_drv)
__xa_erase(xa, index);
- xa_unlock(xa);
+ xa_unlock_irqrestore(xa, flags);
/* Free seq64 memory */
amdgpu_seq64_free(adev, fence_drv->gpu_addr);
@@ -212,12 +221,12 @@ int amdgpu_userq_fence_create(struct amdgpu_usermode_queue *userq,
amdgpu_userq_fence_driver_get(fence_drv);
dma_fence_get(fence);
- if (!xa_empty(&userq->uq_fence_drv_xa)) {
+ if (!xa_empty(&userq->fence_drv_xa)) {
struct amdgpu_userq_fence_driver *stored_fence_drv;
unsigned long index, count = 0;
int i = 0;
- xa_for_each(&userq->uq_fence_drv_xa, index, stored_fence_drv)
+ xa_for_each(&userq->fence_drv_xa, index, stored_fence_drv)
count++;
userq_fence->fence_drv_array =
@@ -226,9 +235,9 @@ int amdgpu_userq_fence_create(struct amdgpu_usermode_queue *userq,
GFP_KERNEL);
if (userq_fence->fence_drv_array) {
- xa_for_each(&userq->uq_fence_drv_xa, index, stored_fence_drv) {
+ xa_for_each(&userq->fence_drv_xa, index, stored_fence_drv) {
userq_fence->fence_drv_array[i] = stored_fence_drv;
- xa_erase(&userq->uq_fence_drv_xa, index);
+ xa_erase(&userq->fence_drv_xa, index);
i++;
}
}
@@ -378,7 +387,6 @@ int amdgpu_userq_signal_ioctl(struct drm_device *dev, void *data,
struct drm_exec exec;
u64 wptr;
- /* Array of syncobj handles */
num_syncobj_handles = args->num_syncobj_handles;
syncobj_handles = memdup_user(u64_to_user_ptr(args->syncobj_handles_array),
sizeof(u32) * num_syncobj_handles);
@@ -400,7 +408,6 @@ int amdgpu_userq_signal_ioctl(struct drm_device *dev, void *data,
}
}
- /* Array of bo handles */
num_bo_handles = args->num_bo_handles;
bo_handles = memdup_user(u64_to_user_ptr(args->bo_handles_array),
sizeof(u32) * num_bo_handles);
@@ -422,7 +429,9 @@ int amdgpu_userq_signal_ioctl(struct drm_device *dev, void *data,
}
}
- drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT, 0);
+ drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT, num_bo_handles);
+
+ /* Lock all BOs with retry handling */
drm_exec_until_all_locked(&exec) {
r = drm_exec_prepare_array(&exec, gobj, num_bo_handles, 1);
drm_exec_retry_on_contention(&exec);
@@ -527,7 +536,6 @@ int amdgpu_userq_wait_ioctl(struct drm_device *dev, void *data,
goto free_timeline_handles;
}
- /* Array of GEM object handles */
gobj = kmalloc_array(num_bo_handles, sizeof(*gobj), GFP_KERNEL);
if (!gobj) {
r = -ENOMEM;
@@ -542,7 +550,9 @@ int amdgpu_userq_wait_ioctl(struct drm_device *dev, void *data,
}
}
- drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT, 0);
+ drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT, num_bo_handles);
+
+ /* Lock all BOs with retry handling */
drm_exec_until_all_locked(&exec) {
r = drm_exec_prepare_array(&exec, gobj, num_bo_handles, 0);
drm_exec_retry_on_contention(&exec);
@@ -702,8 +712,8 @@ int amdgpu_userq_wait_ioctl(struct drm_device *dev, void *data,
* Otherwise, we would gather those references until we don't
* have any more space left and crash.
*/
- if (fence_drv->uq_fence_drv_xa_ref) {
- r = xa_alloc(fence_drv->uq_fence_drv_xa_ref, &index, fence_drv,
+ if (fence_drv->fence_drv_xa_ptr) {
+ r = xa_alloc(fence_drv->fence_drv_xa_ptr, &index, fence_drv,
xa_limit_32b, GFP_KERNEL);
if (r)
goto free_fences;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_userq_fence.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_userq_fence.h
index f72424248cc5..89c82ba38b50 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_userq_fence.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_userq_fence.h
@@ -54,7 +54,7 @@ struct amdgpu_userq_fence_driver {
spinlock_t fence_list_lock;
struct list_head fences;
struct amdgpu_device *adev;
- struct xarray *uq_fence_drv_xa_ref;
+ struct xarray *fence_drv_xa_ptr;
char timeline_name[TASK_COMM_LEN];
};
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_userqueue.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_userqueue.c
index e7f7354e0c0e..9b24218f7ad2 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_userqueue.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_userqueue.c
@@ -48,8 +48,8 @@ static void amdgpu_userq_walk_and_drop_fence_drv(struct xarray *xa)
static void
amdgpu_userq_fence_driver_free(struct amdgpu_usermode_queue *userq)
{
- amdgpu_userq_walk_and_drop_fence_drv(&userq->uq_fence_drv_xa);
- xa_destroy(&userq->uq_fence_drv_xa);
+ amdgpu_userq_walk_and_drop_fence_drv(&userq->fence_drv_xa);
+ xa_destroy(&userq->fence_drv_xa);
/* Drop the fence_drv reference held by user queue */
amdgpu_userq_fence_driver_put(userq->fence_drv);
}
@@ -348,7 +348,7 @@ amdgpu_userqueue_create(struct drm_file *filp, union drm_amdgpu_userq *args)
}
queue->doorbell_index = index;
- xa_init_flags(&queue->uq_fence_drv_xa, XA_FLAGS_ALLOC);
+ xa_init_flags(&queue->fence_drv_xa, XA_FLAGS_ALLOC);
r = amdgpu_userq_fence_driver_alloc(adev, queue);
if (r) {
DRM_ERROR("Failed to alloc fence driver\n");
diff --git a/drivers/gpu/drm/amd/include/amdgpu_userqueue.h b/drivers/gpu/drm/amd/include/amdgpu_userqueue.h
index d035b5c2b14b..6eb094a54f4b 100644
--- a/drivers/gpu/drm/amd/include/amdgpu_userqueue.h
+++ b/drivers/gpu/drm/amd/include/amdgpu_userqueue.h
@@ -52,7 +52,7 @@ struct amdgpu_usermode_queue {
struct amdgpu_userq_obj db_obj;
struct amdgpu_userq_obj fw_obj;
struct amdgpu_userq_obj wptr_obj;
- struct xarray uq_fence_drv_xa;
+ struct xarray fence_drv_xa;
struct amdgpu_userq_fence_driver *fence_drv;
struct dma_fence *last_fence;
};
--
2.34.1
