Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

[karo-tx-linux.git] / include / drm / drm_modeset_lock.h

diff --git a/include/drm/drm_modeset_lock.h b/include/drm/drm_modeset_lock.h
index 402aa7a6a058dc68e3923d1ee2ad7296800d3d69..70595ff565baa45190faaae5c42630fe04a1beff 100644 (file)
--- a/include/drm/drm_modeset_lock.h
+++ b/include/drm/drm_modeset_lock.h
@@ -29,10 +29,11 @@
 struct drm_modeset_lock;
 
 /**
- * drm_modeset_acquire_ctx - locking context (see ww_acquire_ctx)
+ * struct drm_modeset_acquire_ctx - locking context (see ww_acquire_ctx)
  * @ww_ctx: base acquire ctx
  * @contended: used internally for -EDEADLK handling
  * @locked: list of held locks
+ * @trylock_only: trylock mode used in atomic contexts/panic notifiers
  *
  * Each thread competing for a set of locks must use one acquire
  * ctx.  And if any lock fxn returns -EDEADLK, it must backoff and
@@ -53,10 +54,15 @@ struct drm_modeset_acquire_ctx {
         * list of held locks (drm_modeset_lock)
         */
        struct list_head locked;
+
+       /**
+        * Trylock mode, use only for panic handlers!
+        */
+       bool trylock_only;
 };
 
 /**
- * drm_modeset_lock - used for locking modeset resources.
+ * struct drm_modeset_lock - used for locking modeset resources.
  * @mutex: resource locking
  * @head: used to hold it's place on state->locked list when
  *    part of an atomic update
@@ -120,6 +126,19 @@ int drm_modeset_lock_interruptible(struct drm_modeset_lock *lock,
 void drm_modeset_unlock(struct drm_modeset_lock *lock);
 
 struct drm_device;
+struct drm_crtc;
+struct drm_plane;
+
+void drm_modeset_lock_all(struct drm_device *dev);
+int __drm_modeset_lock_all(struct drm_device *dev, bool trylock);
+void drm_modeset_unlock_all(struct drm_device *dev);
+void drm_modeset_lock_crtc(struct drm_crtc *crtc,
+                          struct drm_plane *plane);
+void drm_modeset_unlock_crtc(struct drm_crtc *crtc);
+void drm_warn_on_modeset_not_all_locked(struct drm_device *dev);
+struct drm_modeset_acquire_ctx *
+drm_modeset_legacy_acquire_ctx(struct drm_crtc *crtc);
+
 int drm_modeset_lock_all_crtcs(struct drm_device *dev,
                struct drm_modeset_acquire_ctx *ctx);