Lines Matching full:lock

33  * of the DRM heavyweight hardware lock.
34  * The lock is a read-write lock. Taking it in read mode and write mode
39  * It's allowed to leave kernel space with the vt lock held.
40  * If a user-space process dies while having the vt-lock,
41  * it will be released during the file descriptor release. The vt lock
42  * excludes write lock and read lock.
44  * The suspend mode is used to lock out all TTM users when preparing for
60  * @base: ttm base object used solely to release the lock if the client
61  * holding the lock dies.
62  * @queue: Queue for processes waiting for lock change-of-status.
63  * @lock: Spinlock protecting some lock members.
64  * @rw: Read-write lock counter. Protected by @lock.
65  * @flags: Lock state. Protected by @lock.
66  * @kill_takers: Boolean whether to kill takers of the lock.
73 	spinlock_t lock;  member
85  * @lock: Pointer to a struct ttm_lock
86  * Initializes the lock.
88 extern void ttm_lock_init(struct ttm_lock *lock);
93  * @lock: Pointer to a struct ttm_lock
95  * Releases a read lock.
97 extern void ttm_read_unlock(struct ttm_lock *lock);
102  * @lock: Pointer to a struct ttm_lock
103  * @interruptible: Interruptible sleeping while waiting for a lock.
105  * Takes the lock in read mode.
109 extern int ttm_read_lock(struct ttm_lock *lock, bool interruptible);
114  * @lock: Pointer to a struct ttm_lock
115  * @interruptible: Interruptible sleeping while waiting for a lock.
117  * Tries to take the lock in read mode. If the lock is already held
118  * in write mode, the function will return -EBUSY. If the lock is held
123  * -EBUSY The lock was already held in write mode.
126 extern int ttm_read_trylock(struct ttm_lock *lock, bool interruptible);
131  * @lock: Pointer to a struct ttm_lock
133  * Releases a write lock.
135 extern void ttm_write_unlock(struct ttm_lock *lock);
140  * @lock: Pointer to a struct ttm_lock
141  * @interruptible: Interruptible sleeping while waiting for a lock.
143  * Takes the lock in write mode.
147 extern int ttm_write_lock(struct ttm_lock *lock, bool interruptible);
152  * @lock: Pointer to a struct ttm_lock
154  * Downgrades a write lock to a read lock.
156 extern void ttm_lock_downgrade(struct ttm_lock *lock);
161  * @lock: Pointer to a struct ttm_lock
163  * Takes the lock in suspend mode. Excludes read and write mode.
165 extern void ttm_suspend_lock(struct ttm_lock *lock);
170  * @lock: Pointer to a struct ttm_lock
172  * Releases a suspend lock
174 extern void ttm_suspend_unlock(struct ttm_lock *lock);
179  * @lock: Pointer to a struct ttm_lock
180  * @interruptible: Interruptible sleeping while waiting for a lock.
181  * @tfile: Pointer to a struct ttm_object_file to register the lock with.
183  * Takes the lock in vt mode.
188 extern int ttm_vt_lock(struct ttm_lock *lock, bool interruptible,
194  * @lock: Pointer to a struct ttm_lock
196  * Releases a vt lock.
198  * -EINVAL If the lock was not held.
200 extern int ttm_vt_unlock(struct ttm_lock *lock);
205  * @lock: Pointer to a struct ttm_lock
207  * Releases a write lock.
209 extern void ttm_write_unlock(struct ttm_lock *lock);
214  * @lock: Pointer to a struct ttm_lock
215  * @interruptible: Interruptible sleeping while waiting for a lock.
217  * Takes the lock in write mode.
221 extern int ttm_write_lock(struct ttm_lock *lock, bool interruptible);
226  * @lock: Pointer to a struct ttm_lock
227  * @val: Boolean whether to kill processes taking the lock.
228  * @signal: Signal to send to the process taking the lock.
230  * The kill-when-taking-lock functionality is used to kill processes that keep
233  * - X server takes lock in write mode.
236  * - X server releases the lock on file release.
237  * - Another dri client wants to render, takes the lock and is killed.
240 static inline void ttm_lock_set_kill(struct ttm_lock *lock, bool val,  in ttm_lock_set_kill()  argument
243 	lock->kill_takers = val;  in ttm_lock_set_kill()
245 		lock->signal = signal;  in ttm_lock_set_kill()