diff options
Diffstat (limited to 'include/drm/drm_modeset_lock.h')
| -rw-r--r-- | include/drm/drm_modeset_lock.h | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/include/drm/drm_modeset_lock.h b/include/drm/drm_modeset_lock.h index 402aa7a6a058..70595ff565ba 100644 --- 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); |