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