From: Rob Clark robdclark@chromium.org
Our initial logic for excluding dma-bufs was not quite right. In particular we want msm_gem_get/put_pages() path used for exported dma-bufs to increment/decrement the pin-count.
Also, in case the importer is vmap'ing the dma-buf, we need to be sure to update the object's status, because it is now no longer potentially evictable.
Fixes: 63f17ef83428 drm/msm: Support evicting GEM objects to swap Signed-off-by: Rob Clark robdclark@chromium.org --- drivers/gpu/drm/msm/msm_gem.c | 16 +++++++++++++++- drivers/gpu/drm/msm/msm_gem.h | 4 ++-- 2 files changed, 17 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c index 09ef4ec6eb34..17f85d2f23ab 100644 --- a/drivers/gpu/drm/msm/msm_gem.c +++ b/drivers/gpu/drm/msm/msm_gem.c @@ -190,13 +190,25 @@ struct page **msm_gem_get_pages(struct drm_gem_object *obj) }
p = get_pages(obj); + + if (!IS_ERR(p)) { + msm_obj->pin_count++; + update_inactive(msm_obj); + } + msm_gem_unlock(obj); return p; }
void msm_gem_put_pages(struct drm_gem_object *obj) { - /* when we start tracking the pin count, then do something here */ + struct msm_gem_object *msm_obj = to_msm_bo(obj); + + msm_gem_lock(obj); + msm_obj->pin_count--; + GEM_WARN_ON(msm_obj->pin_count < 0); + update_inactive(msm_obj); + msm_gem_unlock(obj); }
int msm_gem_mmap_obj(struct drm_gem_object *obj, @@ -646,6 +658,8 @@ static void *get_vaddr(struct drm_gem_object *obj, unsigned madv) ret = -ENOMEM; goto fail; } + + update_inactive(msm_obj); }
return msm_obj->vaddr; diff --git a/drivers/gpu/drm/msm/msm_gem.h b/drivers/gpu/drm/msm/msm_gem.h index 1b519fcd8418..66fb40b87122 100644 --- a/drivers/gpu/drm/msm/msm_gem.h +++ b/drivers/gpu/drm/msm/msm_gem.h @@ -228,7 +228,7 @@ static inline bool is_active(struct msm_gem_object *msm_obj) /* imported/exported objects are not purgeable: */ static inline bool is_unpurgeable(struct msm_gem_object *msm_obj) { - return msm_obj->base.dma_buf && msm_obj->base.import_attach; + return msm_obj->base.import_attach || msm_obj->pin_count; }
static inline bool is_purgeable(struct msm_gem_object *msm_obj) @@ -278,7 +278,7 @@ static inline void mark_unpurgeable(struct msm_gem_object *msm_obj)
static inline bool is_unevictable(struct msm_gem_object *msm_obj) { - return is_unpurgeable(msm_obj) || msm_obj->pin_count || msm_obj->vaddr; + return is_unpurgeable(msm_obj) || msm_obj->vaddr; }
static inline void mark_evictable(struct msm_gem_object *msm_obj)