Ingo Molnar | fb1c8f9 | 2005-09-10 00:25:56 -0700 | [diff] [blame] | 1 | #ifndef __LINUX_SPINLOCK_API_SMP_H |
| 2 | #define __LINUX_SPINLOCK_API_SMP_H |
| 3 | |
| 4 | #ifndef __LINUX_SPINLOCK_H |
| 5 | # error "please don't include this file directly" |
| 6 | #endif |
| 7 | |
| 8 | /* |
| 9 | * include/linux/spinlock_api_smp.h |
| 10 | * |
| 11 | * spinlock API declarations on SMP (and debug) |
| 12 | * (implemented in kernel/spinlock.c) |
| 13 | * |
| 14 | * portions Copyright 2005, Red Hat, Inc., Ingo Molnar |
| 15 | * Released under the General Public License (GPL). |
| 16 | */ |
| 17 | |
| 18 | int in_lock_functions(unsigned long addr); |
| 19 | |
| 20 | #define assert_spin_locked(x) BUG_ON(!spin_is_locked(x)) |
| 21 | |
Josh Triplett | 9f50b93 | 2006-09-29 02:00:59 -0700 | [diff] [blame] | 22 | void __lockfunc _spin_lock(spinlock_t *lock) __acquires(lock); |
Ingo Molnar | 8a25d5d | 2006-07-03 00:24:54 -0700 | [diff] [blame] | 23 | void __lockfunc _spin_lock_nested(spinlock_t *lock, int subclass) |
Josh Triplett | 9f50b93 | 2006-09-29 02:00:59 -0700 | [diff] [blame] | 24 | __acquires(lock); |
Peter Zijlstra | b7d39af | 2008-08-11 09:30:24 +0200 | [diff] [blame] | 25 | void __lockfunc _spin_lock_nest_lock(spinlock_t *lock, struct lockdep_map *map) |
| 26 | __acquires(lock); |
Josh Triplett | 9f50b93 | 2006-09-29 02:00:59 -0700 | [diff] [blame] | 27 | void __lockfunc _read_lock(rwlock_t *lock) __acquires(lock); |
| 28 | void __lockfunc _write_lock(rwlock_t *lock) __acquires(lock); |
| 29 | void __lockfunc _spin_lock_bh(spinlock_t *lock) __acquires(lock); |
| 30 | void __lockfunc _read_lock_bh(rwlock_t *lock) __acquires(lock); |
| 31 | void __lockfunc _write_lock_bh(rwlock_t *lock) __acquires(lock); |
| 32 | void __lockfunc _spin_lock_irq(spinlock_t *lock) __acquires(lock); |
| 33 | void __lockfunc _read_lock_irq(rwlock_t *lock) __acquires(lock); |
| 34 | void __lockfunc _write_lock_irq(rwlock_t *lock) __acquires(lock); |
Ingo Molnar | fb1c8f9 | 2005-09-10 00:25:56 -0700 | [diff] [blame] | 35 | unsigned long __lockfunc _spin_lock_irqsave(spinlock_t *lock) |
Josh Triplett | 9f50b93 | 2006-09-29 02:00:59 -0700 | [diff] [blame] | 36 | __acquires(lock); |
Arjan van de Ven | cfd3ef2 | 2006-11-25 11:09:37 -0800 | [diff] [blame] | 37 | unsigned long __lockfunc _spin_lock_irqsave_nested(spinlock_t *lock, int subclass) |
| 38 | __acquires(lock); |
Ingo Molnar | fb1c8f9 | 2005-09-10 00:25:56 -0700 | [diff] [blame] | 39 | unsigned long __lockfunc _read_lock_irqsave(rwlock_t *lock) |
Josh Triplett | 9f50b93 | 2006-09-29 02:00:59 -0700 | [diff] [blame] | 40 | __acquires(lock); |
Ingo Molnar | fb1c8f9 | 2005-09-10 00:25:56 -0700 | [diff] [blame] | 41 | unsigned long __lockfunc _write_lock_irqsave(rwlock_t *lock) |
Josh Triplett | 9f50b93 | 2006-09-29 02:00:59 -0700 | [diff] [blame] | 42 | __acquires(lock); |
Ingo Molnar | fb1c8f9 | 2005-09-10 00:25:56 -0700 | [diff] [blame] | 43 | int __lockfunc _spin_trylock(spinlock_t *lock); |
| 44 | int __lockfunc _read_trylock(rwlock_t *lock); |
| 45 | int __lockfunc _write_trylock(rwlock_t *lock); |
| 46 | int __lockfunc _spin_trylock_bh(spinlock_t *lock); |
Josh Triplett | 9f50b93 | 2006-09-29 02:00:59 -0700 | [diff] [blame] | 47 | void __lockfunc _spin_unlock(spinlock_t *lock) __releases(lock); |
| 48 | void __lockfunc _read_unlock(rwlock_t *lock) __releases(lock); |
| 49 | void __lockfunc _write_unlock(rwlock_t *lock) __releases(lock); |
| 50 | void __lockfunc _spin_unlock_bh(spinlock_t *lock) __releases(lock); |
| 51 | void __lockfunc _read_unlock_bh(rwlock_t *lock) __releases(lock); |
| 52 | void __lockfunc _write_unlock_bh(rwlock_t *lock) __releases(lock); |
| 53 | void __lockfunc _spin_unlock_irq(spinlock_t *lock) __releases(lock); |
| 54 | void __lockfunc _read_unlock_irq(rwlock_t *lock) __releases(lock); |
| 55 | void __lockfunc _write_unlock_irq(rwlock_t *lock) __releases(lock); |
Ingo Molnar | fb1c8f9 | 2005-09-10 00:25:56 -0700 | [diff] [blame] | 56 | void __lockfunc _spin_unlock_irqrestore(spinlock_t *lock, unsigned long flags) |
Josh Triplett | 9f50b93 | 2006-09-29 02:00:59 -0700 | [diff] [blame] | 57 | __releases(lock); |
Ingo Molnar | fb1c8f9 | 2005-09-10 00:25:56 -0700 | [diff] [blame] | 58 | void __lockfunc _read_unlock_irqrestore(rwlock_t *lock, unsigned long flags) |
Josh Triplett | 9f50b93 | 2006-09-29 02:00:59 -0700 | [diff] [blame] | 59 | __releases(lock); |
Ingo Molnar | fb1c8f9 | 2005-09-10 00:25:56 -0700 | [diff] [blame] | 60 | void __lockfunc _write_unlock_irqrestore(rwlock_t *lock, unsigned long flags) |
Josh Triplett | 9f50b93 | 2006-09-29 02:00:59 -0700 | [diff] [blame] | 61 | __releases(lock); |
Ingo Molnar | fb1c8f9 | 2005-09-10 00:25:56 -0700 | [diff] [blame] | 62 | |
Thomas Gleixner | 6beb000 | 2009-11-09 15:21:34 +0000 | [diff] [blame] | 63 | #ifdef CONFIG_INLINE_SPIN_LOCK |
Heiko Carstens | 892a7c6 | 2009-08-31 14:43:37 +0200 | [diff] [blame] | 64 | #define _spin_lock(lock) __spin_lock(lock) |
| 65 | #endif |
| 66 | |
Thomas Gleixner | 6beb000 | 2009-11-09 15:21:34 +0000 | [diff] [blame] | 67 | #ifdef CONFIG_INLINE_READ_LOCK |
Heiko Carstens | 892a7c6 | 2009-08-31 14:43:37 +0200 | [diff] [blame] | 68 | #define _read_lock(lock) __read_lock(lock) |
| 69 | #endif |
| 70 | |
Thomas Gleixner | 6beb000 | 2009-11-09 15:21:34 +0000 | [diff] [blame] | 71 | #ifdef CONFIG_INLINE_WRITE_LOCK |
Heiko Carstens | 892a7c6 | 2009-08-31 14:43:37 +0200 | [diff] [blame] | 72 | #define _write_lock(lock) __write_lock(lock) |
| 73 | #endif |
| 74 | |
Thomas Gleixner | 6beb000 | 2009-11-09 15:21:34 +0000 | [diff] [blame] | 75 | #ifdef CONFIG_INLINE_SPIN_LOCK_BH |
Heiko Carstens | 892a7c6 | 2009-08-31 14:43:37 +0200 | [diff] [blame] | 76 | #define _spin_lock_bh(lock) __spin_lock_bh(lock) |
| 77 | #endif |
| 78 | |
Thomas Gleixner | 6beb000 | 2009-11-09 15:21:34 +0000 | [diff] [blame] | 79 | #ifdef CONFIG_INLINE_READ_LOCK_BH |
Heiko Carstens | 892a7c6 | 2009-08-31 14:43:37 +0200 | [diff] [blame] | 80 | #define _read_lock_bh(lock) __read_lock_bh(lock) |
| 81 | #endif |
| 82 | |
Thomas Gleixner | 6beb000 | 2009-11-09 15:21:34 +0000 | [diff] [blame] | 83 | #ifdef CONFIG_INLINE_WRITE_LOCK_BH |
Heiko Carstens | 892a7c6 | 2009-08-31 14:43:37 +0200 | [diff] [blame] | 84 | #define _write_lock_bh(lock) __write_lock_bh(lock) |
| 85 | #endif |
| 86 | |
Thomas Gleixner | 6beb000 | 2009-11-09 15:21:34 +0000 | [diff] [blame] | 87 | #ifdef CONFIG_INLINE_SPIN_LOCK_IRQ |
Heiko Carstens | 892a7c6 | 2009-08-31 14:43:37 +0200 | [diff] [blame] | 88 | #define _spin_lock_irq(lock) __spin_lock_irq(lock) |
| 89 | #endif |
| 90 | |
Thomas Gleixner | 6beb000 | 2009-11-09 15:21:34 +0000 | [diff] [blame] | 91 | #ifdef CONFIG_INLINE_READ_LOCK_IRQ |
Heiko Carstens | 892a7c6 | 2009-08-31 14:43:37 +0200 | [diff] [blame] | 92 | #define _read_lock_irq(lock) __read_lock_irq(lock) |
| 93 | #endif |
| 94 | |
Thomas Gleixner | 6beb000 | 2009-11-09 15:21:34 +0000 | [diff] [blame] | 95 | #ifdef CONFIG_INLINE_WRITE_LOCK_IRQ |
Heiko Carstens | 892a7c6 | 2009-08-31 14:43:37 +0200 | [diff] [blame] | 96 | #define _write_lock_irq(lock) __write_lock_irq(lock) |
| 97 | #endif |
| 98 | |
Thomas Gleixner | 6beb000 | 2009-11-09 15:21:34 +0000 | [diff] [blame] | 99 | #ifdef CONFIG_INLINE_SPIN_LOCK_IRQSAVE |
Heiko Carstens | 892a7c6 | 2009-08-31 14:43:37 +0200 | [diff] [blame] | 100 | #define _spin_lock_irqsave(lock) __spin_lock_irqsave(lock) |
| 101 | #endif |
| 102 | |
Thomas Gleixner | 6beb000 | 2009-11-09 15:21:34 +0000 | [diff] [blame] | 103 | #ifdef CONFIG_INLINE_READ_LOCK_IRQSAVE |
Heiko Carstens | 892a7c6 | 2009-08-31 14:43:37 +0200 | [diff] [blame] | 104 | #define _read_lock_irqsave(lock) __read_lock_irqsave(lock) |
| 105 | #endif |
| 106 | |
Thomas Gleixner | 6beb000 | 2009-11-09 15:21:34 +0000 | [diff] [blame] | 107 | #ifdef CONFIG_INLINE_WRITE_LOCK_IRQSAVE |
Heiko Carstens | 892a7c6 | 2009-08-31 14:43:37 +0200 | [diff] [blame] | 108 | #define _write_lock_irqsave(lock) __write_lock_irqsave(lock) |
| 109 | #endif |
| 110 | |
Thomas Gleixner | 6beb000 | 2009-11-09 15:21:34 +0000 | [diff] [blame] | 111 | #ifdef CONFIG_INLINE_SPIN_TRYLOCK |
Heiko Carstens | 892a7c6 | 2009-08-31 14:43:37 +0200 | [diff] [blame] | 112 | #define _spin_trylock(lock) __spin_trylock(lock) |
| 113 | #endif |
| 114 | |
Thomas Gleixner | 6beb000 | 2009-11-09 15:21:34 +0000 | [diff] [blame] | 115 | #ifdef CONFIG_INLINE_READ_TRYLOCK |
Heiko Carstens | 892a7c6 | 2009-08-31 14:43:37 +0200 | [diff] [blame] | 116 | #define _read_trylock(lock) __read_trylock(lock) |
| 117 | #endif |
| 118 | |
Thomas Gleixner | 6beb000 | 2009-11-09 15:21:34 +0000 | [diff] [blame] | 119 | #ifdef CONFIG_INLINE_WRITE_TRYLOCK |
Heiko Carstens | 892a7c6 | 2009-08-31 14:43:37 +0200 | [diff] [blame] | 120 | #define _write_trylock(lock) __write_trylock(lock) |
| 121 | #endif |
| 122 | |
Thomas Gleixner | 6beb000 | 2009-11-09 15:21:34 +0000 | [diff] [blame] | 123 | #ifdef CONFIG_INLINE_SPIN_TRYLOCK_BH |
Heiko Carstens | 892a7c6 | 2009-08-31 14:43:37 +0200 | [diff] [blame] | 124 | #define _spin_trylock_bh(lock) __spin_trylock_bh(lock) |
| 125 | #endif |
| 126 | |
Thomas Gleixner | 6beb000 | 2009-11-09 15:21:34 +0000 | [diff] [blame] | 127 | #ifdef CONFIG_INLINE_SPIN_UNLOCK |
Heiko Carstens | 892a7c6 | 2009-08-31 14:43:37 +0200 | [diff] [blame] | 128 | #define _spin_unlock(lock) __spin_unlock(lock) |
| 129 | #endif |
| 130 | |
Thomas Gleixner | 6beb000 | 2009-11-09 15:21:34 +0000 | [diff] [blame] | 131 | #ifdef CONFIG_INLINE_READ_UNLOCK |
Heiko Carstens | 892a7c6 | 2009-08-31 14:43:37 +0200 | [diff] [blame] | 132 | #define _read_unlock(lock) __read_unlock(lock) |
| 133 | #endif |
| 134 | |
Thomas Gleixner | 6beb000 | 2009-11-09 15:21:34 +0000 | [diff] [blame] | 135 | #ifdef CONFIG_INLINE_WRITE_UNLOCK |
Heiko Carstens | 892a7c6 | 2009-08-31 14:43:37 +0200 | [diff] [blame] | 136 | #define _write_unlock(lock) __write_unlock(lock) |
| 137 | #endif |
| 138 | |
Thomas Gleixner | 6beb000 | 2009-11-09 15:21:34 +0000 | [diff] [blame] | 139 | #ifdef CONFIG_INLINE_SPIN_UNLOCK_BH |
Heiko Carstens | 892a7c6 | 2009-08-31 14:43:37 +0200 | [diff] [blame] | 140 | #define _spin_unlock_bh(lock) __spin_unlock_bh(lock) |
| 141 | #endif |
| 142 | |
Thomas Gleixner | 6beb000 | 2009-11-09 15:21:34 +0000 | [diff] [blame] | 143 | #ifdef CONFIG_INLINE_READ_UNLOCK_BH |
Heiko Carstens | 892a7c6 | 2009-08-31 14:43:37 +0200 | [diff] [blame] | 144 | #define _read_unlock_bh(lock) __read_unlock_bh(lock) |
| 145 | #endif |
| 146 | |
Thomas Gleixner | 6beb000 | 2009-11-09 15:21:34 +0000 | [diff] [blame] | 147 | #ifdef CONFIG_INLINE_WRITE_UNLOCK_BH |
Heiko Carstens | 892a7c6 | 2009-08-31 14:43:37 +0200 | [diff] [blame] | 148 | #define _write_unlock_bh(lock) __write_unlock_bh(lock) |
| 149 | #endif |
| 150 | |
Thomas Gleixner | 6beb000 | 2009-11-09 15:21:34 +0000 | [diff] [blame] | 151 | #ifdef CONFIG_INLINE_SPIN_UNLOCK_IRQ |
Heiko Carstens | 892a7c6 | 2009-08-31 14:43:37 +0200 | [diff] [blame] | 152 | #define _spin_unlock_irq(lock) __spin_unlock_irq(lock) |
| 153 | #endif |
| 154 | |
Thomas Gleixner | 6beb000 | 2009-11-09 15:21:34 +0000 | [diff] [blame] | 155 | #ifdef CONFIG_INLINE_READ_UNLOCK_IRQ |
Heiko Carstens | 892a7c6 | 2009-08-31 14:43:37 +0200 | [diff] [blame] | 156 | #define _read_unlock_irq(lock) __read_unlock_irq(lock) |
| 157 | #endif |
| 158 | |
Thomas Gleixner | 6beb000 | 2009-11-09 15:21:34 +0000 | [diff] [blame] | 159 | #ifdef CONFIG_INLINE_WRITE_UNLOCK_IRQ |
Heiko Carstens | 892a7c6 | 2009-08-31 14:43:37 +0200 | [diff] [blame] | 160 | #define _write_unlock_irq(lock) __write_unlock_irq(lock) |
| 161 | #endif |
| 162 | |
Thomas Gleixner | 6beb000 | 2009-11-09 15:21:34 +0000 | [diff] [blame] | 163 | #ifdef CONFIG_INLINE_SPIN_UNLOCK_IRQRESTORE |
Heiko Carstens | 892a7c6 | 2009-08-31 14:43:37 +0200 | [diff] [blame] | 164 | #define _spin_unlock_irqrestore(lock, flags) __spin_unlock_irqrestore(lock, flags) |
| 165 | #endif |
| 166 | |
Thomas Gleixner | 6beb000 | 2009-11-09 15:21:34 +0000 | [diff] [blame] | 167 | #ifdef CONFIG_INLINE_READ_UNLOCK_IRQRESTORE |
Heiko Carstens | 892a7c6 | 2009-08-31 14:43:37 +0200 | [diff] [blame] | 168 | #define _read_unlock_irqrestore(lock, flags) __read_unlock_irqrestore(lock, flags) |
| 169 | #endif |
| 170 | |
Thomas Gleixner | 6beb000 | 2009-11-09 15:21:34 +0000 | [diff] [blame] | 171 | #ifdef CONFIG_INLINE_WRITE_UNLOCK_IRQRESTORE |
Heiko Carstens | 892a7c6 | 2009-08-31 14:43:37 +0200 | [diff] [blame] | 172 | #define _write_unlock_irqrestore(lock, flags) __write_unlock_irqrestore(lock, flags) |
| 173 | #endif |
| 174 | |
Heiko Carstens | 69d0ee7 | 2009-08-31 14:43:36 +0200 | [diff] [blame] | 175 | static inline int __spin_trylock(spinlock_t *lock) |
| 176 | { |
| 177 | preempt_disable(); |
| 178 | if (_raw_spin_trylock(lock)) { |
| 179 | spin_acquire(&lock->dep_map, 0, 1, _RET_IP_); |
| 180 | return 1; |
| 181 | } |
| 182 | preempt_enable(); |
| 183 | return 0; |
| 184 | } |
| 185 | |
| 186 | static inline int __read_trylock(rwlock_t *lock) |
| 187 | { |
| 188 | preempt_disable(); |
| 189 | if (_raw_read_trylock(lock)) { |
| 190 | rwlock_acquire_read(&lock->dep_map, 0, 1, _RET_IP_); |
| 191 | return 1; |
| 192 | } |
| 193 | preempt_enable(); |
| 194 | return 0; |
| 195 | } |
| 196 | |
| 197 | static inline int __write_trylock(rwlock_t *lock) |
| 198 | { |
| 199 | preempt_disable(); |
| 200 | if (_raw_write_trylock(lock)) { |
| 201 | rwlock_acquire(&lock->dep_map, 0, 1, _RET_IP_); |
| 202 | return 1; |
| 203 | } |
| 204 | preempt_enable(); |
| 205 | return 0; |
| 206 | } |
| 207 | |
| 208 | /* |
| 209 | * If lockdep is enabled then we use the non-preemption spin-ops |
| 210 | * even on CONFIG_PREEMPT, because lockdep assumes that interrupts are |
| 211 | * not re-enabled during lock-acquire (which the preempt-spin-ops do): |
| 212 | */ |
| 213 | #if !defined(CONFIG_GENERIC_LOCKBREAK) || defined(CONFIG_DEBUG_LOCK_ALLOC) |
| 214 | |
| 215 | static inline void __read_lock(rwlock_t *lock) |
| 216 | { |
| 217 | preempt_disable(); |
| 218 | rwlock_acquire_read(&lock->dep_map, 0, 0, _RET_IP_); |
| 219 | LOCK_CONTENDED(lock, _raw_read_trylock, _raw_read_lock); |
| 220 | } |
| 221 | |
| 222 | static inline unsigned long __spin_lock_irqsave(spinlock_t *lock) |
| 223 | { |
| 224 | unsigned long flags; |
| 225 | |
| 226 | local_irq_save(flags); |
| 227 | preempt_disable(); |
| 228 | spin_acquire(&lock->dep_map, 0, 0, _RET_IP_); |
| 229 | /* |
| 230 | * On lockdep we dont want the hand-coded irq-enable of |
| 231 | * _raw_spin_lock_flags() code, because lockdep assumes |
| 232 | * that interrupts are not re-enabled during lock-acquire: |
| 233 | */ |
| 234 | #ifdef CONFIG_LOCKDEP |
| 235 | LOCK_CONTENDED(lock, _raw_spin_trylock, _raw_spin_lock); |
| 236 | #else |
| 237 | _raw_spin_lock_flags(lock, &flags); |
| 238 | #endif |
| 239 | return flags; |
| 240 | } |
| 241 | |
| 242 | static inline void __spin_lock_irq(spinlock_t *lock) |
| 243 | { |
| 244 | local_irq_disable(); |
| 245 | preempt_disable(); |
| 246 | spin_acquire(&lock->dep_map, 0, 0, _RET_IP_); |
| 247 | LOCK_CONTENDED(lock, _raw_spin_trylock, _raw_spin_lock); |
| 248 | } |
| 249 | |
| 250 | static inline void __spin_lock_bh(spinlock_t *lock) |
| 251 | { |
| 252 | local_bh_disable(); |
| 253 | preempt_disable(); |
| 254 | spin_acquire(&lock->dep_map, 0, 0, _RET_IP_); |
| 255 | LOCK_CONTENDED(lock, _raw_spin_trylock, _raw_spin_lock); |
| 256 | } |
| 257 | |
| 258 | static inline unsigned long __read_lock_irqsave(rwlock_t *lock) |
| 259 | { |
| 260 | unsigned long flags; |
| 261 | |
| 262 | local_irq_save(flags); |
| 263 | preempt_disable(); |
| 264 | rwlock_acquire_read(&lock->dep_map, 0, 0, _RET_IP_); |
| 265 | LOCK_CONTENDED_FLAGS(lock, _raw_read_trylock, _raw_read_lock, |
| 266 | _raw_read_lock_flags, &flags); |
| 267 | return flags; |
| 268 | } |
| 269 | |
| 270 | static inline void __read_lock_irq(rwlock_t *lock) |
| 271 | { |
| 272 | local_irq_disable(); |
| 273 | preempt_disable(); |
| 274 | rwlock_acquire_read(&lock->dep_map, 0, 0, _RET_IP_); |
| 275 | LOCK_CONTENDED(lock, _raw_read_trylock, _raw_read_lock); |
| 276 | } |
| 277 | |
| 278 | static inline void __read_lock_bh(rwlock_t *lock) |
| 279 | { |
| 280 | local_bh_disable(); |
| 281 | preempt_disable(); |
| 282 | rwlock_acquire_read(&lock->dep_map, 0, 0, _RET_IP_); |
| 283 | LOCK_CONTENDED(lock, _raw_read_trylock, _raw_read_lock); |
| 284 | } |
| 285 | |
| 286 | static inline unsigned long __write_lock_irqsave(rwlock_t *lock) |
| 287 | { |
| 288 | unsigned long flags; |
| 289 | |
| 290 | local_irq_save(flags); |
| 291 | preempt_disable(); |
| 292 | rwlock_acquire(&lock->dep_map, 0, 0, _RET_IP_); |
| 293 | LOCK_CONTENDED_FLAGS(lock, _raw_write_trylock, _raw_write_lock, |
| 294 | _raw_write_lock_flags, &flags); |
| 295 | return flags; |
| 296 | } |
| 297 | |
| 298 | static inline void __write_lock_irq(rwlock_t *lock) |
| 299 | { |
| 300 | local_irq_disable(); |
| 301 | preempt_disable(); |
| 302 | rwlock_acquire(&lock->dep_map, 0, 0, _RET_IP_); |
| 303 | LOCK_CONTENDED(lock, _raw_write_trylock, _raw_write_lock); |
| 304 | } |
| 305 | |
| 306 | static inline void __write_lock_bh(rwlock_t *lock) |
| 307 | { |
| 308 | local_bh_disable(); |
| 309 | preempt_disable(); |
| 310 | rwlock_acquire(&lock->dep_map, 0, 0, _RET_IP_); |
| 311 | LOCK_CONTENDED(lock, _raw_write_trylock, _raw_write_lock); |
| 312 | } |
| 313 | |
| 314 | static inline void __spin_lock(spinlock_t *lock) |
| 315 | { |
| 316 | preempt_disable(); |
| 317 | spin_acquire(&lock->dep_map, 0, 0, _RET_IP_); |
| 318 | LOCK_CONTENDED(lock, _raw_spin_trylock, _raw_spin_lock); |
| 319 | } |
| 320 | |
| 321 | static inline void __write_lock(rwlock_t *lock) |
| 322 | { |
| 323 | preempt_disable(); |
| 324 | rwlock_acquire(&lock->dep_map, 0, 0, _RET_IP_); |
| 325 | LOCK_CONTENDED(lock, _raw_write_trylock, _raw_write_lock); |
| 326 | } |
| 327 | |
| 328 | #endif /* CONFIG_PREEMPT */ |
| 329 | |
| 330 | static inline void __spin_unlock(spinlock_t *lock) |
| 331 | { |
| 332 | spin_release(&lock->dep_map, 1, _RET_IP_); |
| 333 | _raw_spin_unlock(lock); |
| 334 | preempt_enable(); |
| 335 | } |
| 336 | |
| 337 | static inline void __write_unlock(rwlock_t *lock) |
| 338 | { |
| 339 | rwlock_release(&lock->dep_map, 1, _RET_IP_); |
| 340 | _raw_write_unlock(lock); |
| 341 | preempt_enable(); |
| 342 | } |
| 343 | |
| 344 | static inline void __read_unlock(rwlock_t *lock) |
| 345 | { |
| 346 | rwlock_release(&lock->dep_map, 1, _RET_IP_); |
| 347 | _raw_read_unlock(lock); |
| 348 | preempt_enable(); |
| 349 | } |
| 350 | |
| 351 | static inline void __spin_unlock_irqrestore(spinlock_t *lock, |
| 352 | unsigned long flags) |
| 353 | { |
| 354 | spin_release(&lock->dep_map, 1, _RET_IP_); |
| 355 | _raw_spin_unlock(lock); |
| 356 | local_irq_restore(flags); |
| 357 | preempt_enable(); |
| 358 | } |
| 359 | |
| 360 | static inline void __spin_unlock_irq(spinlock_t *lock) |
| 361 | { |
| 362 | spin_release(&lock->dep_map, 1, _RET_IP_); |
| 363 | _raw_spin_unlock(lock); |
| 364 | local_irq_enable(); |
| 365 | preempt_enable(); |
| 366 | } |
| 367 | |
| 368 | static inline void __spin_unlock_bh(spinlock_t *lock) |
| 369 | { |
| 370 | spin_release(&lock->dep_map, 1, _RET_IP_); |
| 371 | _raw_spin_unlock(lock); |
| 372 | preempt_enable_no_resched(); |
| 373 | local_bh_enable_ip((unsigned long)__builtin_return_address(0)); |
| 374 | } |
| 375 | |
| 376 | static inline void __read_unlock_irqrestore(rwlock_t *lock, unsigned long flags) |
| 377 | { |
| 378 | rwlock_release(&lock->dep_map, 1, _RET_IP_); |
| 379 | _raw_read_unlock(lock); |
| 380 | local_irq_restore(flags); |
| 381 | preempt_enable(); |
| 382 | } |
| 383 | |
| 384 | static inline void __read_unlock_irq(rwlock_t *lock) |
| 385 | { |
| 386 | rwlock_release(&lock->dep_map, 1, _RET_IP_); |
| 387 | _raw_read_unlock(lock); |
| 388 | local_irq_enable(); |
| 389 | preempt_enable(); |
| 390 | } |
| 391 | |
| 392 | static inline void __read_unlock_bh(rwlock_t *lock) |
| 393 | { |
| 394 | rwlock_release(&lock->dep_map, 1, _RET_IP_); |
| 395 | _raw_read_unlock(lock); |
| 396 | preempt_enable_no_resched(); |
| 397 | local_bh_enable_ip((unsigned long)__builtin_return_address(0)); |
| 398 | } |
| 399 | |
| 400 | static inline void __write_unlock_irqrestore(rwlock_t *lock, |
| 401 | unsigned long flags) |
| 402 | { |
| 403 | rwlock_release(&lock->dep_map, 1, _RET_IP_); |
| 404 | _raw_write_unlock(lock); |
| 405 | local_irq_restore(flags); |
| 406 | preempt_enable(); |
| 407 | } |
| 408 | |
| 409 | static inline void __write_unlock_irq(rwlock_t *lock) |
| 410 | { |
| 411 | rwlock_release(&lock->dep_map, 1, _RET_IP_); |
| 412 | _raw_write_unlock(lock); |
| 413 | local_irq_enable(); |
| 414 | preempt_enable(); |
| 415 | } |
| 416 | |
| 417 | static inline void __write_unlock_bh(rwlock_t *lock) |
| 418 | { |
| 419 | rwlock_release(&lock->dep_map, 1, _RET_IP_); |
| 420 | _raw_write_unlock(lock); |
| 421 | preempt_enable_no_resched(); |
| 422 | local_bh_enable_ip((unsigned long)__builtin_return_address(0)); |
| 423 | } |
| 424 | |
| 425 | static inline int __spin_trylock_bh(spinlock_t *lock) |
| 426 | { |
| 427 | local_bh_disable(); |
| 428 | preempt_disable(); |
| 429 | if (_raw_spin_trylock(lock)) { |
| 430 | spin_acquire(&lock->dep_map, 0, 1, _RET_IP_); |
| 431 | return 1; |
| 432 | } |
| 433 | preempt_enable_no_resched(); |
| 434 | local_bh_enable_ip((unsigned long)__builtin_return_address(0)); |
| 435 | return 0; |
| 436 | } |
| 437 | |
Ingo Molnar | fb1c8f9 | 2005-09-10 00:25:56 -0700 | [diff] [blame] | 438 | #endif /* __LINUX_SPINLOCK_API_SMP_H */ |