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| author |   Rob Herring <robh@kernel.org> | 2019-08-05 08:33:57 -0600 |
|---|---|---|
| committer | Rob Herring <robh@kernel.org> | 2019-08-08 15:54:10 -0600 |
| commit | 17acb9f35ed736c177f85b8ee711f278e7aff421 (patch) | |
| tree | d888de0d99ed6638215fec5dcc7073ca25b9ea77 /include/drm | |
| parent | drm/panfrost: Remove completed features still in TODO (diff) | |
| download | linux-dev-17acb9f35ed736c177f85b8ee711f278e7aff421.tar.xz linux-dev-17acb9f35ed736c177f85b8ee711f278e7aff421.zip | |
drm/shmem: Add madvise state and purge helpers
Add support to the shmem GEM helpers for tracking madvise state and
purging pages. This is based on the msm implementation.
The BO provides a list_head, but the list management is handled outside
of the shmem helpers as there are different locking requirements.
Cc: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <maxime.ripard@bootlin.com>
Cc: Sean Paul <sean@poorly.run>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Eric Anholt <eric@anholt.net>
Acked-by: Acked-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190805143358.21245-1-robh@kernel.org
Diffstat (limited to 'include/drm')
| -rw-r--r-- | include/drm/drm_gem_shmem_helper.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/drm/drm_gem_shmem_helper.h b/include/drm/drm_gem_shmem_helper.h index 038b6d313447..ce1600fdfc3e 100644 --- a/include/drm/drm_gem_shmem_helper.h +++ b/include/drm/drm_gem_shmem_helper.h @@ -44,6 +44,9 @@ struct drm_gem_shmem_object { */ unsigned int pages_use_count; + int madv; + struct list_head madv_list; + /** * @pages_mark_dirty_on_put: * @@ -121,6 +124,18 @@ void drm_gem_shmem_unpin(struct drm_gem_object *obj); void *drm_gem_shmem_vmap(struct drm_gem_object *obj); void drm_gem_shmem_vunmap(struct drm_gem_object *obj, void *vaddr); +int drm_gem_shmem_madvise(struct drm_gem_object *obj, int madv); + +static inline bool drm_gem_shmem_is_purgeable(struct drm_gem_shmem_object *shmem) +{ + return (shmem->madv > 0) && + !shmem->vmap_use_count && shmem->sgt && + !shmem->base.dma_buf && !shmem->base.import_attach; +} + +void drm_gem_shmem_purge_locked(struct drm_gem_object *obj); +void drm_gem_shmem_purge(struct drm_gem_object *obj); + struct drm_gem_shmem_object * drm_gem_shmem_create_with_handle(struct drm_file *file_priv, struct drm_device *dev, size_t size, |