diff options
| author | Thomas Hellström <thomas.hellstrom@linux.intel.com> | 2025-03-05 10:22:18 +0100 |
|---|---|---|
| committer | Thomas Hellström <thomas.hellstrom@linux.intel.com> | 2025-03-05 17:08:59 +0100 |
| commit | 70d645deac98303d1bf9ab08a4e68da52bf8c1e1 (patch) | |
| tree | 08b504b501ada5b6344c63f7cddd9c71fea387f5 /include | |
| parent | f3bcfd04a52fb1b1702349bed2bccc1126b97f89 (diff) | |
drm/ttm: Add helpers for shrinking
Add a number of helpers for shrinking that access core TTM and
core MM functionality in a way that make them unsuitable for
driver open-coding.
v11:
- New patch (split off from previous) and additional helpers.
v13:
- Adapt to ttm_backup interface change.
- Take resource off LRU when backed up.
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Acked-by: Dave Airlie <airlied@redhat.com>
Acked-by: Christian König <christian.koenig@amd.com>
Link: https://lore.kernel.org/intel-xe/20250305092220.123405-6-thomas.hellstrom@linux.intel.com
Diffstat (limited to 'include')
| -rw-r--r-- | include/drm/ttm/ttm_bo.h | 21 | ||||
| -rw-r--r-- | include/drm/ttm/ttm_tt.h | 2 |
2 files changed, 23 insertions, 0 deletions
diff --git a/include/drm/ttm/ttm_bo.h b/include/drm/ttm/ttm_bo.h index 1509268849c0..903cd1030110 100644 --- a/include/drm/ttm/ttm_bo.h +++ b/include/drm/ttm/ttm_bo.h @@ -226,6 +226,27 @@ s64 ttm_lru_walk_for_evict(struct ttm_lru_walk *walk, struct ttm_device *bdev, struct ttm_resource_manager *man, s64 target); /** + * struct ttm_bo_shrink_flags - flags to govern the bo shrinking behaviour + * @purge: Purge the content rather than backing it up. + * @writeback: Attempt to immediately write content to swap space. + * @allow_move: Allow moving to system before shrinking. This is typically + * not desired for zombie- or ghost objects (with zombie object meaning + * objects with a zero gem object refcount) + */ +struct ttm_bo_shrink_flags { + u32 purge : 1; + u32 writeback : 1; + u32 allow_move : 1; +}; + +long ttm_bo_shrink(struct ttm_operation_ctx *ctx, struct ttm_buffer_object *bo, + const struct ttm_bo_shrink_flags flags); + +bool ttm_bo_shrink_suitable(struct ttm_buffer_object *bo, struct ttm_operation_ctx *ctx); + +bool ttm_bo_shrink_avoid_wait(void); + +/** * ttm_bo_get - reference a struct ttm_buffer_object * * @bo: The buffer object. diff --git a/include/drm/ttm/ttm_tt.h b/include/drm/ttm/ttm_tt.h index c736c01ac2ca..13cf47f3322f 100644 --- a/include/drm/ttm/ttm_tt.h +++ b/include/drm/ttm/ttm_tt.h @@ -298,6 +298,8 @@ long ttm_tt_backup(struct ttm_device *bdev, struct ttm_tt *tt, int ttm_tt_restore(struct ttm_device *bdev, struct ttm_tt *tt, const struct ttm_operation_ctx *ctx); +int ttm_tt_setup_backup(struct ttm_tt *tt); + #if IS_ENABLED(CONFIG_AGP) #include <linux/agp_backend.h> |