Commit 69fb704c authored by Sinclair Yeh's avatar Sinclair Yeh Committed by Sasha Levin

drm/ttm: Make ttm_bo_mem_compat available

[ Upstream commit 94477bff ]

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: default avatarSinclair Yeh <syeh@vmware.com>
Reviewed-by: default avatarThomas 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.
Signed-off-by: default avatarSasha Levin <alexander.levin@verizon.com>
parent 3837836c
......@@ -1000,9 +1000,9 @@ static int ttm_bo_move_buffer(struct ttm_buffer_object *bo,
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;
......@@ -1034,6 +1034,7 @@ 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,
......
......@@ -316,6 +316,20 @@ ttm_bo_reference(struct ttm_buffer_object *bo)
*/
extern int ttm_bo_wait(struct ttm_buffer_object *bo, bool lazy,
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
*
......
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