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| author | Sinclair Yeh <syeh@vmware.com> | 2016-06-29 22:58:49 +0300 |
|---|---|---|
| committer | Sinclair Yeh <syeh@vmware.com> | 2016-07-01 20:47:49 +0300 |
| commit | 94477bff390aa4612d2332c8abafaae0a13d6923 (patch) | |
| tree | c80653a097332502fc4cab07b88aee4142b5d6c2 | |
| parent | 04319d89fbec72dfd60738003c3813b97c1d5f5a (diff) | |
| download | linux-94477bff390aa4612d2332c8abafaae0a13d6923.tar.xz | |
drm/ttm: Make ttm_bo_mem_compat available
There are cases where it is desired to see if a proposed placement
is compatible with a buffer object before calling ttm_bo_validate().
Signed-off-by: Sinclair Yeh <syeh@vmware.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Cc: <stable@vger.kernel.org>
---
This is the first of a 3-patch series to fix a black screen
issue observed on Ubuntu 16.04 server.
| -rw-r--r-- | drivers/gpu/drm/ttm/ttm_bo.c | 7 | ||||
| -rw-r--r-- | include/drm/ttm/ttm_bo_api.h | 14 |
2 files changed, 18 insertions, 3 deletions
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c index 39386f50af87..a71cf98c655f 100644 --- a/drivers/gpu/drm/ttm/ttm_bo.c +++ b/drivers/gpu/drm/ttm/ttm_bo.c @@ -1034,9 +1034,9 @@ out_unlock: return ret; } -static bool ttm_bo_mem_compat(struct ttm_placement *placement, - struct ttm_mem_reg *mem, - uint32_t *new_flags) +bool ttm_bo_mem_compat(struct ttm_placement *placement, + struct ttm_mem_reg *mem, + uint32_t *new_flags) { int i; @@ -1068,6 +1068,7 @@ static bool ttm_bo_mem_compat(struct ttm_placement *placement, return false; } +EXPORT_SYMBOL(ttm_bo_mem_compat); int ttm_bo_validate(struct ttm_buffer_object *bo, struct ttm_placement *placement, diff --git a/include/drm/ttm/ttm_bo_api.h b/include/drm/ttm/ttm_bo_api.h index c801d9028e37..4cecb0b75b9c 100644 --- a/include/drm/ttm/ttm_bo_api.h +++ b/include/drm/ttm/ttm_bo_api.h @@ -316,6 +316,20 @@ ttm_bo_reference(struct ttm_buffer_object *bo) */ extern int ttm_bo_wait(struct ttm_buffer_object *bo, bool interruptible, bool no_wait); + +/** + * ttm_bo_mem_compat - Check if proposed placement is compatible with a bo + * + * @placement: Return immediately if buffer is busy. + * @mem: The struct ttm_mem_reg indicating the region where the bo resides + * @new_flags: Describes compatible placement found + * + * Returns true if the placement is compatible + */ +extern bool ttm_bo_mem_compat(struct ttm_placement *placement, + struct ttm_mem_reg *mem, + uint32_t *new_flags); + /** * ttm_bo_validate * |