diff options
| author | Christian König <christian.koenig@amd.com> | 2022-02-15 19:29:59 +0300 |
|---|---|---|
| committer | Christian König <christian.koenig@amd.com> | 2022-03-29 11:54:58 +0300 |
| commit | 7842cf65b0401814a9df518a86a41641255c84d3 (patch) | |
| tree | ca45d159d8384a5c69461aef352bca3bf7d9e9c5 /drivers | |
| parent | 6ce4431c7ba7954c4fa6a96ce16ca1b2943e1a83 (diff) | |
| download | linux-7842cf65b0401814a9df518a86a41641255c84d3.tar.xz | |
drm/ttm: de-inline ttm_bo_pin/unpin
Those functions are going to become more complex, don't inline them any
more.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20220321132601.2161-4-christian.koenig@amd.com
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/ttm/ttm_bo.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c index b119af33e7d7..fe0fa5fb7945 100644 --- a/drivers/gpu/drm/ttm/ttm_bo.c +++ b/drivers/gpu/drm/ttm/ttm_bo.c @@ -633,6 +633,38 @@ int ttm_mem_evict_first(struct ttm_device *bdev, return ret; } +/** + * ttm_bo_pin - Pin the buffer object. + * @bo: The buffer object to pin + * + * Make sure the buffer is not evicted any more during memory pressure. + * @bo must be unpinned again by calling ttm_bo_unpin(). + */ +void ttm_bo_pin(struct ttm_buffer_object *bo) +{ + dma_resv_assert_held(bo->base.resv); + WARN_ON_ONCE(!kref_read(&bo->kref)); + ++bo->pin_count; +} +EXPORT_SYMBOL(ttm_bo_pin); + +/** + * ttm_bo_unpin - Unpin the buffer object. + * @bo: The buffer object to unpin + * + * Allows the buffer object to be evicted again during memory pressure. + */ +void ttm_bo_unpin(struct ttm_buffer_object *bo) +{ + dma_resv_assert_held(bo->base.resv); + WARN_ON_ONCE(!kref_read(&bo->kref)); + if (bo->pin_count) + --bo->pin_count; + else + WARN_ON_ONCE(true); +} +EXPORT_SYMBOL(ttm_bo_unpin); + /* * Add the last move fence to the BO and reserve a new shared slot. We only use * a shared slot to avoid unecessary sync and rely on the subsequent bo move to |