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drm/ttm: add optional LRU removal callback v2

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Useful for driver specific LRU handling.

v2: fix typo in comment

Reviewed-by: Sinclair Yeh <syeh@vmware.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König 2016-04-06 11:12:06 +02:00 committed by Alex Deucher
parent 00cfd664f6
commit c3ea576e05
2 changed files with 13 additions and 5 deletions
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12
drivers/gpu/drm/ttm/ttm_bo.c
View File

@ -186,8 +186,12 @@ EXPORT_SYMBOL(ttm_bo_add_to_lru);
int ttm_bo_del_from_lru(struct ttm_buffer_object *bo)
{
struct ttm_bo_device *bdev = bo->bdev;
int put_count = 0;
if (bdev->driver->lru_removal)
bdev->driver->lru_removal(bo);
if (!list_empty(&bo->swap)) {
list_del_init(&bo->swap);
++put_count;
@ -197,11 +201,6 @@ int ttm_bo_del_from_lru(struct ttm_buffer_object *bo)
++put_count;
}
/*
* TODO: Add a driver hook to delete from
* driver-specific LRU's here.
*/
return put_count;
}
@ -235,6 +234,9 @@ void ttm_bo_move_to_lru_tail(struct ttm_buffer_object *bo)
lockdep_assert_held(&bo->resv->lock.base);
if (bdev->driver->lru_removal)
bdev->driver->lru_removal(bo);
if (bo->mem.placement & TTM_PL_FLAG_NO_EVICT) {
list_del_init(&bo->swap);
list_del_init(&bo->lru);

6
include/drm/ttm/ttm_bo_driver.h
View File

@ -434,6 +434,12 @@ struct ttm_bo_driver {
*/
int (*io_mem_reserve)(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem);
void (*io_mem_free)(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem);
/**
* Optional driver callback for when BO is removed from the LRU.
* Called with LRU lock held immediately before the removal.
*/
void (*lru_removal)(struct ttm_buffer_object *bo);
};
/**