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authorRandy Dunlap <rdunlap@infradead.org>2013-03-05 13:00:24 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2013-03-12 23:42:10 -0400
commit6c23cbbd5056b155401b0a2b5567d530e6c750c4 (patch)
treea0c0fbca6fee7ba2660c2f030c15b274f198930c /kernel/futex.c
parent20f22ab42e9c832bde6e9a7ed04cdc73ec737e5b (diff)
futex: fix kernel-doc notation and spello
Fix kernel-doc warning in futex.c and convert 'Returns' to the new Return: kernel-doc notation format. Warning(kernel/futex.c:2286): Excess function parameter 'clockrt' description in 'futex_wait_requeue_pi' Fix one spello. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/futex.c')
-rw-r--r--kernel/futex.c46
1 files changed, 23 insertions, 23 deletions
diff --git a/kernel/futex.c b/kernel/futex.c
index f0090a993dab..b26dcfc02c94 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -223,7 +223,8 @@ static void drop_futex_key_refs(union futex_key *key)
223 * @rw: mapping needs to be read/write (values: VERIFY_READ, 223 * @rw: mapping needs to be read/write (values: VERIFY_READ,
224 * VERIFY_WRITE) 224 * VERIFY_WRITE)
225 * 225 *
226 * Returns a negative error code or 0 226 * Return: a negative error code or 0
227 *
227 * The key words are stored in *key on success. 228 * The key words are stored in *key on success.
228 * 229 *
229 * For shared mappings, it's (page->index, file_inode(vma->vm_file), 230 * For shared mappings, it's (page->index, file_inode(vma->vm_file),
@@ -705,9 +706,9 @@ lookup_pi_state(u32 uval, struct futex_hash_bucket *hb,
705 * be "current" except in the case of requeue pi. 706 * be "current" except in the case of requeue pi.
706 * @set_waiters: force setting the FUTEX_WAITERS bit (1) or not (0) 707 * @set_waiters: force setting the FUTEX_WAITERS bit (1) or not (0)
707 * 708 *
708 * Returns: 709 * Return:
709 * 0 - ready to wait 710 * 0 - ready to wait;
710 * 1 - acquired the lock 711 * 1 - acquired the lock;
711 * <0 - error 712 * <0 - error
712 * 713 *
713 * The hb->lock and futex_key refs shall be held by the caller. 714 * The hb->lock and futex_key refs shall be held by the caller.
@@ -1191,9 +1192,9 @@ void requeue_pi_wake_futex(struct futex_q *q, union futex_key *key,
1191 * then direct futex_lock_pi_atomic() to force setting the FUTEX_WAITERS bit. 1192 * then direct futex_lock_pi_atomic() to force setting the FUTEX_WAITERS bit.
1192 * hb1 and hb2 must be held by the caller. 1193 * hb1 and hb2 must be held by the caller.
1193 * 1194 *
1194 * Returns: 1195 * Return:
1195 * 0 - failed to acquire the lock atomicly 1196 * 0 - failed to acquire the lock atomically;
1196 * 1 - acquired the lock 1197 * 1 - acquired the lock;
1197 * <0 - error 1198 * <0 - error
1198 */ 1199 */
1199static int futex_proxy_trylock_atomic(u32 __user *pifutex, 1200static int futex_proxy_trylock_atomic(u32 __user *pifutex,
@@ -1254,8 +1255,8 @@ static int futex_proxy_trylock_atomic(u32 __user *pifutex,
1254 * Requeue waiters on uaddr1 to uaddr2. In the requeue_pi case, try to acquire 1255 * Requeue waiters on uaddr1 to uaddr2. In the requeue_pi case, try to acquire
1255 * uaddr2 atomically on behalf of the top waiter. 1256 * uaddr2 atomically on behalf of the top waiter.
1256 * 1257 *
1257 * Returns: 1258 * Return:
1258 * >=0 - on success, the number of tasks requeued or woken 1259 * >=0 - on success, the number of tasks requeued or woken;
1259 * <0 - on error 1260 * <0 - on error
1260 */ 1261 */
1261static int futex_requeue(u32 __user *uaddr1, unsigned int flags, 1262static int futex_requeue(u32 __user *uaddr1, unsigned int flags,
@@ -1536,8 +1537,8 @@ static inline void queue_me(struct futex_q *q, struct futex_hash_bucket *hb)
1536 * The q->lock_ptr must not be held by the caller. A call to unqueue_me() must 1537 * The q->lock_ptr must not be held by the caller. A call to unqueue_me() must
1537 * be paired with exactly one earlier call to queue_me(). 1538 * be paired with exactly one earlier call to queue_me().
1538 * 1539 *
1539 * Returns: 1540 * Return:
1540 * 1 - if the futex_q was still queued (and we removed unqueued it) 1541 * 1 - if the futex_q was still queued (and we removed unqueued it);
1541 * 0 - if the futex_q was already removed by the waking thread 1542 * 0 - if the futex_q was already removed by the waking thread
1542 */ 1543 */
1543static int unqueue_me(struct futex_q *q) 1544static int unqueue_me(struct futex_q *q)
@@ -1707,9 +1708,9 @@ static long futex_wait_restart(struct restart_block *restart);
1707 * the pi_state owner as well as handle race conditions that may allow us to 1708 * the pi_state owner as well as handle race conditions that may allow us to
1708 * acquire the lock. Must be called with the hb lock held. 1709 * acquire the lock. Must be called with the hb lock held.
1709 * 1710 *
1710 * Returns: 1711 * Return:
1711 * 1 - success, lock taken 1712 * 1 - success, lock taken;
1712 * 0 - success, lock not taken 1713 * 0 - success, lock not taken;
1713 * <0 - on error (-EFAULT) 1714 * <0 - on error (-EFAULT)
1714 */ 1715 */
1715static int fixup_owner(u32 __user *uaddr, struct futex_q *q, int locked) 1716static int fixup_owner(u32 __user *uaddr, struct futex_q *q, int locked)
@@ -1824,8 +1825,8 @@ static void futex_wait_queue_me(struct futex_hash_bucket *hb, struct futex_q *q,
1824 * Return with the hb lock held and a q.key reference on success, and unlocked 1825 * Return with the hb lock held and a q.key reference on success, and unlocked
1825 * with no q.key reference on failure. 1826 * with no q.key reference on failure.
1826 * 1827 *
1827 * Returns: 1828 * Return:
1828 * 0 - uaddr contains val and hb has been locked 1829 * 0 - uaddr contains val and hb has been locked;
1829 * <1 - -EFAULT or -EWOULDBLOCK (uaddr does not contain val) and hb is unlocked 1830 * <1 - -EFAULT or -EWOULDBLOCK (uaddr does not contain val) and hb is unlocked
1830 */ 1831 */
1831static int futex_wait_setup(u32 __user *uaddr, u32 val, unsigned int flags, 1832static int futex_wait_setup(u32 __user *uaddr, u32 val, unsigned int flags,
@@ -2203,9 +2204,9 @@ pi_faulted:
2203 * the wakeup and return the appropriate error code to the caller. Must be 2204 * the wakeup and return the appropriate error code to the caller. Must be
2204 * called with the hb lock held. 2205 * called with the hb lock held.
2205 * 2206 *
2206 * Returns 2207 * Return:
2207 * 0 - no early wakeup detected 2208 * 0 = no early wakeup detected;
2208 * <0 - -ETIMEDOUT or -ERESTARTNOINTR 2209 * <0 = -ETIMEDOUT or -ERESTARTNOINTR
2209 */ 2210 */
2210static inline 2211static inline
2211int handle_early_requeue_pi_wakeup(struct futex_hash_bucket *hb, 2212int handle_early_requeue_pi_wakeup(struct futex_hash_bucket *hb,
@@ -2247,7 +2248,6 @@ int handle_early_requeue_pi_wakeup(struct futex_hash_bucket *hb,
2247 * @val: the expected value of uaddr 2248 * @val: the expected value of uaddr
2248 * @abs_time: absolute timeout 2249 * @abs_time: absolute timeout
2249 * @bitset: 32 bit wakeup bitset set by userspace, defaults to all 2250 * @bitset: 32 bit wakeup bitset set by userspace, defaults to all
2250 * @clockrt: whether to use CLOCK_REALTIME (1) or CLOCK_MONOTONIC (0)
2251 * @uaddr2: the pi futex we will take prior to returning to user-space 2251 * @uaddr2: the pi futex we will take prior to returning to user-space
2252 * 2252 *
2253 * The caller will wait on uaddr and will be requeued by futex_requeue() to 2253 * The caller will wait on uaddr and will be requeued by futex_requeue() to
@@ -2258,7 +2258,7 @@ int handle_early_requeue_pi_wakeup(struct futex_hash_bucket *hb,
2258 * there was a need to. 2258 * there was a need to.
2259 * 2259 *
2260 * We call schedule in futex_wait_queue_me() when we enqueue and return there 2260 * We call schedule in futex_wait_queue_me() when we enqueue and return there
2261 * via the following: 2261 * via the following--
2262 * 1) wakeup on uaddr2 after an atomic lock acquisition by futex_requeue() 2262 * 1) wakeup on uaddr2 after an atomic lock acquisition by futex_requeue()
2263 * 2) wakeup on uaddr2 after a requeue 2263 * 2) wakeup on uaddr2 after a requeue
2264 * 3) signal 2264 * 3) signal
@@ -2276,8 +2276,8 @@ int handle_early_requeue_pi_wakeup(struct futex_hash_bucket *hb,
2276 * 2276 *
2277 * If 4 or 7, we cleanup and return with -ETIMEDOUT. 2277 * If 4 or 7, we cleanup and return with -ETIMEDOUT.
2278 * 2278 *
2279 * Returns: 2279 * Return:
2280 * 0 - On success 2280 * 0 - On success;
2281 * <0 - On error 2281 * <0 - On error
2282 */ 2282 */
2283static int futex_wait_requeue_pi(u32 __user *uaddr, unsigned int flags, 2283static int futex_wait_requeue_pi(u32 __user *uaddr, unsigned int flags,