summaryrefslogtreecommitdiff
path: root/include/drm
diff options
context:
space:
mode:
authorRob Herring <robh@kernel.org>2019-08-05 17:33:57 +0300
committerRob Herring <robh@kernel.org>2019-08-09 00:54:10 +0300
commit17acb9f35ed736c177f85b8ee711f278e7aff421 (patch)
treed888de0d99ed6638215fec5dcc7073ca25b9ea77 /include/drm
parent3551a9fa2c5d3f3b0a34af67d33a0f2a5fecd94c (diff)
downloadlinux-17acb9f35ed736c177f85b8ee711f278e7aff421.tar.xz
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.h15
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,