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drm/ttm: add lru notify to bo driver v2

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allow driver do somethings when lru changed.
v2:
address Michel's comments.

Signed-off-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Chunming Zhou 2019-01-10 17:56:39 +08:00 • committed by Alex Deucher
parent 466bcb75b0
commit ae6d343541
2 changed files with 16 additions and 4 deletions
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11
drivers/gpu/drm/ttm/ttm_bo.c
View file

@ -198,19 +198,22 @@ static void ttm_bo_ref_bug(struct kref *list_kref)
void ttm_bo_del_from_lru(struct ttm_buffer_object *bo) void ttm_bo_del_from_lru(struct ttm_buffer_object *bo)
{ {
struct ttm_bo_device *bdev = bo->bdev;
bool notify = false;
if (!list_empty(&bo->swap)) { if (!list_empty(&bo->swap)) {
list_del_init(&bo->swap); list_del_init(&bo->swap);
kref_put(&bo->list_kref, ttm_bo_ref_bug); kref_put(&bo->list_kref, ttm_bo_ref_bug);
notify = true;
} }
if (!list_empty(&bo->lru)) { if (!list_empty(&bo->lru)) {
list_del_init(&bo->lru); list_del_init(&bo->lru);
kref_put(&bo->list_kref, ttm_bo_ref_bug); kref_put(&bo->list_kref, ttm_bo_ref_bug);
notify = true;
} }
/* if (notify && bdev->driver->del_from_lru_notify)
* TODO: Add a driver hook to delete from bdev->driver->del_from_lru_notify(bo);
* driver-specific LRU's here.
*/
} }
void ttm_bo_del_sub_from_lru(struct ttm_buffer_object *bo) void ttm_bo_del_sub_from_lru(struct ttm_buffer_object *bo)

9
include/drm/ttm/ttm_bo_driver.h
View file

@ -381,6 +381,15 @@ struct ttm_bo_driver {
*/ */
int (*access_memory)(struct ttm_buffer_object *bo, unsigned long offset, int (*access_memory)(struct ttm_buffer_object *bo, unsigned long offset,
void *buf, int len, int write); void *buf, int len, int write);
/**
* struct ttm_bo_driver member del_from_lru_notify
*
* @bo: the buffer object deleted from lru
*
* notify driver that a BO was deleted from LRU.
*/
void (*del_from_lru_notify)(struct ttm_buffer_object *bo);
}; };
/** /**