For now just filter or wait for user fences.
Signed-off-by: Christian König christian.koenig@amd.com --- drivers/gpu/drm/drm_syncobj.c | 15 ++++++++++++--- include/drm/drm_syncobj.h | 25 +++++++++++++++++++++---- 2 files changed, 33 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/drm_syncobj.c b/drivers/gpu/drm/drm_syncobj.c index 5a961ea90a35..8d25a2dd107b 100644 --- a/drivers/gpu/drm/drm_syncobj.c +++ b/drivers/gpu/drm/drm_syncobj.c @@ -386,7 +386,7 @@ int drm_syncobj_find_fence(struct drm_file *file_private, struct drm_syncobj *syncobj = drm_syncobj_find(file_private, handle); struct syncobj_wait_entry wait; u64 timeout = nsecs_to_jiffies64(DRM_SYNCOBJ_WAIT_FOR_SUBMIT_TIMEOUT); - int ret; + long ret;
if (!syncobj) return -ENOENT; @@ -398,10 +398,19 @@ int drm_syncobj_find_fence(struct drm_file *file_private, if (flags & DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT) { might_sleep(); lockdep_assert_none_held_once(); + *fence = drm_syncobj_user_fence_get(syncobj); + if (*fence) { + ret = dma_fence_wait_user(*fence, timeout); + if (ret < 0) + return ret; + if (ret == 0) + return -ETIME; + timeout = ret; + } + } else { + *fence = drm_syncobj_fence_get(syncobj); }
- *fence = drm_syncobj_fence_get(syncobj); - if (*fence) { ret = dma_fence_chain_find_seqno(fence, point); if (!ret) { diff --git a/include/drm/drm_syncobj.h b/include/drm/drm_syncobj.h index 6cf7243a1dc5..acc3979815eb 100644 --- a/include/drm/drm_syncobj.h +++ b/include/drm/drm_syncobj.h @@ -28,6 +28,7 @@
#include <linux/dma-fence.h> #include <linux/dma-fence-chain.h> +#include <linux/dma-fence-unwrap.h>
struct drm_file;
@@ -89,18 +90,18 @@ drm_syncobj_put(struct drm_syncobj *obj) }
/** - * drm_syncobj_fence_get - get a reference to a fence in a sync object + * drm_syncobj_user_fence_get - get an user fence from a sync object * @syncobj: sync object. * * This acquires additional reference to &drm_syncobj.fence contained in @obj, - * if not NULL. It is illegal to call this without already holding a reference. - * No locks required. + * if not NULL. It is illegal to call this without holding a reference to the + * syncobj. No locks required. * * Returns: * Either the fence of @obj or NULL if there's none. */ static inline struct dma_fence * -drm_syncobj_fence_get(struct drm_syncobj *syncobj) +drm_syncobj_user_fence_get(struct drm_syncobj *syncobj) { struct dma_fence *fence;
@@ -111,6 +112,22 @@ drm_syncobj_fence_get(struct drm_syncobj *syncobj) return fence; }
+/** + * drm_syncobj_fence_get - get a reference to a fence in a sync object + * @syncobj: sync object. + * + * Same functionality as drm_syncobj_user_fence_get(), but user fences are + * filtered out. + * + * Returns: + * Either the fence of @obj or NULL if there's none. + */ +static inline struct dma_fence * +drm_syncobj_fence_get(struct drm_syncobj *syncobj) +{ + return dma_fence_filter_user(drm_syncobj_user_fence_get(syncobj)); +} + struct drm_syncobj *drm_syncobj_find(struct drm_file *file_private, u32 handle); void drm_syncobj_add_point(struct drm_syncobj *syncobj,