| 520,7 → 520,7 |
|---|
| * @man: An array of mem_type_managers. |
| * @fence_lock: Protects the synchronizing members on *all* bos belonging |
| * to this device. |
| * @addr_space_mm: Range manager for the device address space. |
| * @vma_manager: Address space manager |
| * lru_lock: Spinlock that protects the buffer+device lru lists and |
| * ddestroy lists. |
| * @val_seq: Current validation sequence. |
| 774,8 → 774,58 |
|---|
| bool interruptible); |
| extern void ttm_mem_io_unlock(struct ttm_mem_type_manager *man); |
| |
| extern void ttm_bo_del_sub_from_lru(struct ttm_buffer_object *bo); |
| extern void ttm_bo_add_to_lru(struct ttm_buffer_object *bo); |
| |
| /** |
| * ttm_bo_reserve_nolru: |
| * |
| * @bo: A pointer to a struct ttm_buffer_object. |
| * @interruptible: Sleep interruptible if waiting. |
| * @no_wait: Don't sleep while trying to reserve, rather return -EBUSY. |
| * @use_ticket: If @bo is already reserved, Only sleep waiting for |
| * it to become unreserved if @ticket->stamp is older. |
| * |
| * Will not remove reserved buffers from the lru lists. |
| * Otherwise identical to ttm_bo_reserve. |
| * |
| * Returns: |
| * -EDEADLK: The reservation may cause a deadlock. |
| * Release all buffer reservations, wait for @bo to become unreserved and |
| * try again. (only if use_sequence == 1). |
| * -ERESTARTSYS: A wait for the buffer to become unreserved was interrupted by |
| * a signal. Release all buffer reservations and return to user-space. |
| * -EBUSY: The function needed to sleep, but @no_wait was true |
| * -EALREADY: Bo already reserved using @ticket. This error code will only |
| * be returned if @use_ticket is set to true. |
| */ |
| static inline int ttm_bo_reserve_nolru(struct ttm_buffer_object *bo, |
| bool interruptible, |
| bool no_wait, bool use_ticket, |
| struct ww_acquire_ctx *ticket) |
| { |
| int ret = 0; |
| /* |
| if (no_wait) { |
| bool success; |
| if (WARN_ON(ticket)) |
| return -EBUSY; |
| |
| success = ww_mutex_trylock(&bo->resv->lock); |
| return success ? 0 : -EBUSY; |
| } |
| |
| if (interruptible) |
| ret = ww_mutex_lock_interruptible(&bo->resv->lock, ticket); |
| else |
| ret = ww_mutex_lock(&bo->resv->lock, ticket); |
| if (ret == -EINTR) |
| return -ERESTARTSYS; |
| */ |
| return ret; |
| } |
| |
| /** |
| * ttm_bo_reserve: |
| * |
| * @bo: A pointer to a struct ttm_buffer_object. |
| 884,7 → 934,7 |
|---|
| ttm_bo_add_to_lru(bo); |
| spin_unlock(&bo->glob->lru_lock); |
| } |
| ww_mutex_unlock(&bo->resv->lock); |
| // ww_mutex_unlock(&bo->resv->lock); |
| } |
| |
| /** |