asm/octeon/cvmx-spinlock.h

61  * @lock:   Lock to initialize
63 static inline void cvmx_spinlock_init(cvmx_spinlock_t *lock)
65 	lock->value = CVMX_SPINLOCK_UNLOCKED_VAL;
71  * @lock:   Lock to check
74 static inline int cvmx_spinlock_locked(cvmx_spinlock_t *lock)
76 	return lock->value != CVMX_SPINLOCK_UNLOCKED_VAL;
80  * Releases lock
82  * @lock:   pointer to lock structure
84 static inline void cvmx_spinlock_unlock(cvmx_spinlock_t *lock)
87 	lock->value = 0;
92  * Attempts to take the lock, but does not spin if lock is not available.
93  * May take some time to acquire the lock even if it is available
96  * @lock:   pointer to lock structure
98  * Returns 0: lock successfully taken
99  *	   1: lock not taken, held by someone else
103 static inline unsigned int cvmx_spinlock_trylock(cvmx_spinlock_t *lock)
109 			/* if lock held, fail immediately */
117 			[val] "+m"(lock->value), [tmp] "=&r"(tmp)
124  * Gets lock, spins until lock is taken
126  * @lock:   pointer to lock structure
128 static inline void cvmx_spinlock_lock(cvmx_spinlock_t *lock)
140 			[val] "+m"(lock->value), [tmp] "=&r"(tmp)
149  * compact data structures as only 1 bit is consumed for the lock.
154  * Gets lock, spins until lock is taken
156  * word used for the lock.
159  * @word:  word to lock bit 31 of
183  * Attempts to get lock, returns immediately with success/failure
185  * word used for the lock.
188  * @word:  word to lock bit 31 of
189  * Returns 0: lock successfully taken
190  *	   1: lock not taken, held by someone else
200 			/* if lock held, fail immediately */
217  * Releases bit lock
219  * Unconditionally clears bit 31 of the lock word.  Note that this is
221  * of the bits in the word are protected by the lock.