diff options
| -rw-r--r-- | drivers/gpu/drm/ttm/ttm_bo.c | 30 | ||||
| -rw-r--r-- | include/drm/ttm/ttm_bo_driver.h | 28 |
2 files changed, 1 insertions, 57 deletions
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c index dd47b2a9a791..0e3754a3a303 100644 --- a/drivers/gpu/drm/ttm/ttm_bo.c +++ b/drivers/gpu/drm/ttm/ttm_bo.c | |||
| @@ -1716,40 +1716,12 @@ int ttm_bo_wait(struct ttm_buffer_object *bo, | |||
| 1716 | } | 1716 | } |
| 1717 | EXPORT_SYMBOL(ttm_bo_wait); | 1717 | EXPORT_SYMBOL(ttm_bo_wait); |
| 1718 | 1718 | ||
| 1719 | void ttm_bo_unblock_reservation(struct ttm_buffer_object *bo) | ||
| 1720 | { | ||
| 1721 | atomic_set(&bo->reserved, 0); | ||
| 1722 | wake_up_all(&bo->event_queue); | ||
| 1723 | } | ||
| 1724 | |||
| 1725 | int ttm_bo_block_reservation(struct ttm_buffer_object *bo, bool interruptible, | ||
| 1726 | bool no_wait) | ||
| 1727 | { | ||
| 1728 | int ret; | ||
| 1729 | |||
| 1730 | while (unlikely(atomic_cmpxchg(&bo->reserved, 0, 1) != 0)) { | ||
| 1731 | if (no_wait) | ||
| 1732 | return -EBUSY; | ||
| 1733 | else if (interruptible) { | ||
| 1734 | ret = wait_event_interruptible | ||
| 1735 | (bo->event_queue, atomic_read(&bo->reserved) == 0); | ||
| 1736 | if (unlikely(ret != 0)) | ||
| 1737 | return ret; | ||
| 1738 | } else { | ||
| 1739 | wait_event(bo->event_queue, | ||
| 1740 | atomic_read(&bo->reserved) == 0); | ||
| 1741 | } | ||
| 1742 | } | ||
| 1743 | return 0; | ||
| 1744 | } | ||
| 1745 | |||
| 1746 | int ttm_bo_synccpu_write_grab(struct ttm_buffer_object *bo, bool no_wait) | 1719 | int ttm_bo_synccpu_write_grab(struct ttm_buffer_object *bo, bool no_wait) |
| 1747 | { | 1720 | { |
| 1748 | int ret = 0; | 1721 | int ret = 0; |
| 1749 | 1722 | ||
| 1750 | /* | 1723 | /* |
| 1751 | * Using ttm_bo_reserve instead of ttm_bo_block_reservation | 1724 | * Using ttm_bo_reserve makes sure the lru lists are updated. |
| 1752 | * makes sure the lru lists are updated. | ||
| 1753 | */ | 1725 | */ |
| 1754 | 1726 | ||
| 1755 | ret = ttm_bo_reserve(bo, true, no_wait, false, 0); | 1727 | ret = ttm_bo_reserve(bo, true, no_wait, false, 0); |
diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h index e929c27ede22..6b9db917e717 100644 --- a/include/drm/ttm/ttm_bo_driver.h +++ b/include/drm/ttm/ttm_bo_driver.h | |||
| @@ -789,34 +789,6 @@ extern void ttm_bo_unreserve(struct ttm_buffer_object *bo); | |||
| 789 | extern int ttm_bo_wait_unreserved(struct ttm_buffer_object *bo, | 789 | extern int ttm_bo_wait_unreserved(struct ttm_buffer_object *bo, |
| 790 | bool interruptible); | 790 | bool interruptible); |
| 791 | 791 | ||
| 792 | /** | ||
| 793 | * ttm_bo_block_reservation | ||
| 794 | * | ||
| 795 | * @bo: A pointer to a struct ttm_buffer_object. | ||
| 796 | * @interruptible: Use interruptible sleep when waiting. | ||
| 797 | * @no_wait: Don't sleep, but rather return -EBUSY. | ||
| 798 | * | ||
| 799 | * Block reservation for validation by simply reserving the buffer. | ||
| 800 | * This is intended for single buffer use only without eviction, | ||
| 801 | * and thus needs no deadlock protection. | ||
| 802 | * | ||
| 803 | * Returns: | ||
| 804 | * -EBUSY: If no_wait == 1 and the buffer is already reserved. | ||
| 805 | * -ERESTARTSYS: If interruptible == 1 and the process received a signal | ||
| 806 | * while sleeping. | ||
| 807 | */ | ||
| 808 | extern int ttm_bo_block_reservation(struct ttm_buffer_object *bo, | ||
| 809 | bool interruptible, bool no_wait); | ||
| 810 | |||
| 811 | /** | ||
| 812 | * ttm_bo_unblock_reservation | ||
| 813 | * | ||
| 814 | * @bo: A pointer to a struct ttm_buffer_object. | ||
| 815 | * | ||
| 816 | * Unblocks reservation leaving lru lists untouched. | ||
| 817 | */ | ||
| 818 | extern void ttm_bo_unblock_reservation(struct ttm_buffer_object *bo); | ||
| 819 | |||
| 820 | /* | 792 | /* |
| 821 | * ttm_bo_util.c | 793 | * ttm_bo_util.c |
| 822 | */ | 794 | */ |
