allow driver do somethings when lru changed.
v2:
address Michel's comments.
Change-Id: Ie82053da49272881d4b52b1c406f7c221a3fcadf
Signed-off-by: Chunming Zhou <david1.zhou@xxxxxxx>
---
drivers/gpu/drm/ttm/ttm_bo.c | 11 +++++++----
include/drm/ttm/ttm_bo_driver.h | 9 +++++++++
2 files changed, 16 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index 0ec08394e17a..de088c8070fb 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -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)
{
+ struct ttm_bo_device *bdev = bo->bdev;
+ bool notify = false;
+
if (!list_empty(&bo->swap)) {
list_del_init(&bo->swap);
kref_put(&bo->list_kref, ttm_bo_ref_bug);
+ notify = true;
}
if (!list_empty(&bo->lru)) {
list_del_init(&bo->lru);
kref_put(&bo->list_kref, ttm_bo_ref_bug);
+ notify = true;
}
- /*
- * TODO: Add a driver hook to delete from
- * driver-specific LRU's here.
- */
+ if (notify && bdev->driver->del_from_lru_notify)
+ bdev->driver->del_from_lru_notify(bo);
}
void ttm_bo_del_sub_from_lru(struct ttm_buffer_object *bo)
diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h
index 1021106438b2..15829b24277c 100644
--- a/include/drm/ttm/ttm_bo_driver.h
+++ b/include/drm/ttm/ttm_bo_driver.h
@@ -381,6 +381,15 @@ struct ttm_bo_driver {
*/
int (*access_memory)(struct ttm_buffer_object *bo, unsigned long offset,
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);
};
/**
--
2.17.1
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