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| author | Maarten Lankhorst <maarten.lankhorst@canonical.com> | 2014-01-09 11:03:15 +0100 |
|---|---|---|
| committer | Maarten Lankhorst <maarten.lankhorst@canonical.com> | 2014-09-30 14:04:00 +0200 |
| commit | f4f4e3e3e9f3bde110067b9e4487cb267d90055a (patch) | |
| tree | 8a90f83235d7ea09adc9ac64fb44a87e823feddb /drivers/gpu/drm/ttm | |
| parent | b5e9c1a25fcf8a0d664606251a53b5caa6a19d08 (diff) | |
| download | linux-f4f4e3e3e9f3bde110067b9e4487cb267d90055a.tar.bz2 | |
drm/ttm: add reservation_object as argument to ttm_bo_init
This allows importing reservation objects from dma-bufs.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Diffstat (limited to 'drivers/gpu/drm/ttm')
| -rw-r--r-- | drivers/gpu/drm/ttm/ttm_bo.c | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c index a11969acfea5..8f5cec67c47d 100644 --- a/drivers/gpu/drm/ttm/ttm_bo.c +++ b/drivers/gpu/drm/ttm/ttm_bo.c @@ -1068,6 +1068,7 @@ int ttm_bo_init(struct ttm_bo_device *bdev, struct file *persistent_swap_storage, size_t acc_size, struct sg_table *sg, + struct reservation_object *resv, void (*destroy) (struct ttm_buffer_object *)) { int ret = 0; @@ -1121,8 +1122,13 @@ int ttm_bo_init(struct ttm_bo_device *bdev, bo->persistent_swap_storage = persistent_swap_storage; bo->acc_size = acc_size; bo->sg = sg; - bo->resv = &bo->ttm_resv; - reservation_object_init(bo->resv); + if (resv) { + bo->resv = resv; + lockdep_assert_held(&bo->resv->lock.base); + } else { + bo->resv = &bo->ttm_resv; + reservation_object_init(&bo->ttm_resv); + } atomic_inc(&bo->glob->bo_count); drm_vma_node_reset(&bo->vma_node); @@ -1135,13 +1141,19 @@ int ttm_bo_init(struct ttm_bo_device *bdev, ret = drm_vma_offset_add(&bdev->vma_manager, &bo->vma_node, bo->mem.num_pages); - locked = ww_mutex_trylock(&bo->resv->lock); - WARN_ON(!locked); + /* passed reservation objects should already be locked, + * since otherwise lockdep will be angered in radeon. + */ + if (!resv) { + locked = ww_mutex_trylock(&bo->resv->lock); + WARN_ON(!locked); + } if (likely(!ret)) ret = ttm_bo_validate(bo, placement, interruptible, false); - ttm_bo_unreserve(bo); + if (!resv) + ttm_bo_unreserve(bo); if (unlikely(ret)) ttm_bo_unref(&bo); @@ -1199,7 +1211,7 @@ int ttm_bo_create(struct ttm_bo_device *bdev, acc_size = ttm_bo_acc_size(bdev, size, sizeof(struct ttm_buffer_object)); ret = ttm_bo_init(bdev, bo, size, type, placement, page_alignment, interruptible, persistent_swap_storage, acc_size, - NULL, NULL); + NULL, NULL, NULL); if (likely(ret == 0)) *p_bo = bo; |