diff options
author | Christian König <christian.koenig@amd.com> | 2019-09-19 12:56:15 +0200 |
---|---|---|
committer | Christian König <christian.koenig@amd.com> | 2019-10-25 11:40:50 +0200 |
commit | 9165fb879f62a73577867180e890f410f3a239ad (patch) | |
tree | 7b437f77168f3c8d7a614a4f019b5dba4446bf0d /include/drm/ttm | |
parent | drm/ttm, drm/vmwgfx: move cpu_writers handling into vmwgfx (diff) | |
download | linux-9165fb879f62a73577867180e890f410f3a239ad.tar.xz linux-9165fb879f62a73577867180e890f410f3a239ad.zip |
drm/ttm: always keep BOs on the LRU
This allows blocking for BOs to become available
in the memory management.
Amdgpu is doing this for quite a while now during CS. Now
apply the new behavior to all drivers using TTM.
Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Thomas Hellstrom <thellstrom@vmware.com>
Link: https://patchwork.freedesktop.org/patch/332878/
Diffstat (limited to 'include/drm/ttm')
-rw-r--r-- | include/drm/ttm/ttm_bo_api.h | 24 | ||||
-rw-r--r-- | include/drm/ttm/ttm_bo_driver.h | 20 | ||||
-rw-r--r-- | include/drm/ttm/ttm_execbuf_util.h | 2 |
3 files changed, 4 insertions, 42 deletions
diff --git a/include/drm/ttm/ttm_bo_api.h b/include/drm/ttm/ttm_bo_api.h index 9fb1408c6199..54fa457b26ab 100644 --- a/include/drm/ttm/ttm_bo_api.h +++ b/include/drm/ttm/ttm_bo_api.h @@ -361,30 +361,6 @@ int ttm_bo_validate(struct ttm_buffer_object *bo, void ttm_bo_put(struct ttm_buffer_object *bo); /** - * ttm_bo_add_to_lru - * - * @bo: The buffer object. - * - * Add this bo to the relevant mem type lru and, if it's backed by - * system pages (ttms) to the swap list. - * This function must be called with struct ttm_bo_global::lru_lock held, and - * is typically called immediately prior to unreserving a bo. - */ -void ttm_bo_add_to_lru(struct ttm_buffer_object *bo); - -/** - * ttm_bo_del_from_lru - * - * @bo: The buffer object. - * - * Remove this bo from all lru lists used to lookup and reserve an object. - * This function must be called with struct ttm_bo_global::lru_lock held, - * and is usually called just immediately after the bo has been reserved to - * avoid recursive reservation from lru lists. - */ -void ttm_bo_del_from_lru(struct ttm_buffer_object *bo); - -/** * ttm_bo_move_to_lru_tail * * @bo: The buffer object. diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h index 27b9d5be197f..1976828ec0bd 100644 --- a/include/drm/ttm/ttm_bo_driver.h +++ b/include/drm/ttm/ttm_bo_driver.h @@ -631,9 +631,6 @@ void ttm_mem_io_free_vm(struct ttm_buffer_object *bo); int ttm_mem_io_lock(struct ttm_mem_type_manager *man, bool interruptible); void ttm_mem_io_unlock(struct ttm_mem_type_manager *man); -void ttm_bo_del_sub_from_lru(struct ttm_buffer_object *bo); -void ttm_bo_add_to_lru(struct ttm_buffer_object *bo); - /** * __ttm_bo_reserve: * @@ -727,15 +724,9 @@ static inline int ttm_bo_reserve(struct ttm_buffer_object *bo, bool interruptible, bool no_wait, struct ww_acquire_ctx *ticket) { - int ret; - WARN_ON(!kref_read(&bo->kref)); - ret = __ttm_bo_reserve(bo, interruptible, no_wait, ticket); - if (likely(ret == 0)) - ttm_bo_del_sub_from_lru(bo); - - return ret; + return __ttm_bo_reserve(bo, interruptible, no_wait, ticket); } /** @@ -762,9 +753,7 @@ static inline int ttm_bo_reserve_slowpath(struct ttm_buffer_object *bo, else dma_resv_lock_slow(bo->base.resv, ticket); - if (likely(ret == 0)) - ttm_bo_del_sub_from_lru(bo); - else if (ret == -EINTR) + if (ret == -EINTR) ret = -ERESTARTSYS; return ret; @@ -780,10 +769,7 @@ static inline int ttm_bo_reserve_slowpath(struct ttm_buffer_object *bo, static inline void ttm_bo_unreserve(struct ttm_buffer_object *bo) { spin_lock(&bo->bdev->glob->lru_lock); - if (list_empty(&bo->lru)) - ttm_bo_add_to_lru(bo); - else - ttm_bo_move_to_lru_tail(bo, NULL); + ttm_bo_move_to_lru_tail(bo, NULL); spin_unlock(&bo->bdev->glob->lru_lock); dma_resv_unlock(bo->base.resv); } diff --git a/include/drm/ttm/ttm_execbuf_util.h b/include/drm/ttm/ttm_execbuf_util.h index 7e46cc678e7e..5a19843bb80d 100644 --- a/include/drm/ttm/ttm_execbuf_util.h +++ b/include/drm/ttm/ttm_execbuf_util.h @@ -99,7 +99,7 @@ extern void ttm_eu_backoff_reservation(struct ww_acquire_ctx *ticket, extern int ttm_eu_reserve_buffers(struct ww_acquire_ctx *ticket, struct list_head *list, bool intr, - struct list_head *dups, bool del_lru); + struct list_head *dups); /** * function ttm_eu_fence_buffer_objects. |