| 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 |
|---|
| * 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 |
|---|
| 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); |
| |