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| author | Thomas Zimmermann <tzimmermann@suse.de> | 2019-09-06 14:20:56 +0200 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2019-09-09 12:52:24 +0200 |
| commit | 2236439bc6679caa905d65def47dacd12466c2e9 (patch) | |
| tree | 84bc753c4b72e203f9f457c32558d6dad550020b /include/drm/drm_gem_vram_helper.h | |
| parent | f3309105b87956bdadfcc35bf0cefc463f427c9b (diff) | |
| download | linux-2236439bc6679caa905d65def47dacd12466c2e9.tar.gz linux-2236439bc6679caa905d65def47dacd12466c2e9.tar.xz | |
drm/vram: Implement lazy unmapping for GEM VRAM buffers
Frequent mapping and unmapping a buffer object adds overhead for
modifying the page table and creates debug output. Unmapping a buffer
is only required when the memory manager evicts the buffer from its
current location.
v4:
* WARN_ON if buffer is still mapped during BO cleanup
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reported-and-tested-by: Davidlohr Bueso <dbueso@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20190906122056.32018-5-tzimmermann@suse.de
Diffstat (limited to 'include/drm/drm_gem_vram_helper.h')
| -rw-r--r-- | include/drm/drm_gem_vram_helper.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/drm/drm_gem_vram_helper.h b/include/drm/drm_gem_vram_helper.h index 4f0e207ee097..b47c46516466 100644 --- a/include/drm/drm_gem_vram_helper.h +++ b/include/drm/drm_gem_vram_helper.h @@ -112,6 +112,10 @@ int drm_gem_vram_fill_create_dumb(struct drm_file *file, void drm_gem_vram_bo_driver_evict_flags(struct ttm_buffer_object *bo, struct ttm_placement *pl); +void drm_gem_vram_bo_driver_move_notify(struct ttm_buffer_object *bo, + bool evict, + struct ttm_mem_reg *new_mem); + int drm_gem_vram_bo_driver_verify_access(struct ttm_buffer_object *bo, struct file *filp); |