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drm/ttm, drm/vmwgfx: move cpu_writers handling into vmwgfx

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This feature is only used by vmwgfx and superfluous for everybody else.

Signed-off-by: Christian König <christian.koenig@amd.com>
Co-developed-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Tested-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/333650/
This commit is contained in:
Christian König
2019-10-01 10:02:58 +02:00
parent c6a5f8daff
commit 7fb03cc3e0
7 changed files with 19 additions and 71 deletions
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32
include/drm/ttm/ttm_bo_api.h
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@@ -147,7 +147,6 @@ struct ttm_tt;
* holds a pointer to a persistent shmem object.
* @ttm: TTM structure holding system pages.
* @evicted: Whether the object was evicted without user-space knowing.
* @cpu_writes: For synchronization. Number of cpu writers.
* @lru: List head for the lru list.
* @ddestroy: List head for the delayed destroy list.
* @swap: List head for swap LRU list.
@@ -198,12 +197,6 @@ struct ttm_buffer_object {
struct ttm_tt *ttm;
bool evicted;
/**
* Members protected by the bo::reserved lock only when written to.
*/
atomic_t cpu_writers;
/**
* Members protected by the bdev::lru_lock.
*/
@@ -441,31 +434,6 @@ void ttm_bo_unlock_delayed_workqueue(struct ttm_bo_device *bdev, int resched);
bool ttm_bo_eviction_valuable(struct ttm_buffer_object *bo,
const struct ttm_place *place);
/**
* ttm_bo_synccpu_write_grab
*
* @bo: The buffer object:
* @no_wait: Return immediately if buffer is busy.
*
* Synchronizes a buffer object for CPU RW access. This means
* command submission that affects the buffer will return -EBUSY
* until ttm_bo_synccpu_write_release is called.
*
* Returns
* -EBUSY if the buffer is busy and no_wait is true.
* -ERESTARTSYS if interrupted by a signal.
*/
int ttm_bo_synccpu_write_grab(struct ttm_buffer_object *bo, bool no_wait);
/**
* ttm_bo_synccpu_write_release:
*
* @bo : The buffer object.
*
* Releases a synccpu lock.
*/
void ttm_bo_synccpu_write_release(struct ttm_buffer_object *bo);
/**
* ttm_bo_acc_size
*