diff options
Diffstat (limited to 'lib/rwsem-spinlock.c')
-rw-r--r-- | lib/rwsem-spinlock.c | 38 |
1 files changed, 19 insertions, 19 deletions
diff --git a/lib/rwsem-spinlock.c b/lib/rwsem-spinlock.c index ffc9fc7f3b05..f2393c21fe85 100644 --- a/lib/rwsem-spinlock.c +++ b/lib/rwsem-spinlock.c | |||
@@ -22,9 +22,9 @@ int rwsem_is_locked(struct rw_semaphore *sem) | |||
22 | int ret = 1; | 22 | int ret = 1; |
23 | unsigned long flags; | 23 | unsigned long flags; |
24 | 24 | ||
25 | if (spin_trylock_irqsave(&sem->wait_lock, flags)) { | 25 | if (raw_spin_trylock_irqsave(&sem->wait_lock, flags)) { |
26 | ret = (sem->activity != 0); | 26 | ret = (sem->activity != 0); |
27 | spin_unlock_irqrestore(&sem->wait_lock, flags); | 27 | raw_spin_unlock_irqrestore(&sem->wait_lock, flags); |
28 | } | 28 | } |
29 | return ret; | 29 | return ret; |
30 | } | 30 | } |
@@ -44,7 +44,7 @@ void __init_rwsem(struct rw_semaphore *sem, const char *name, | |||
44 | lockdep_init_map(&sem->dep_map, name, key, 0); | 44 | lockdep_init_map(&sem->dep_map, name, key, 0); |
45 | #endif | 45 | #endif |
46 | sem->activity = 0; | 46 | sem->activity = 0; |
47 | spin_lock_init(&sem->wait_lock); | 47 | raw_spin_lock_init(&sem->wait_lock); |
48 | INIT_LIST_HEAD(&sem->wait_list); | 48 | INIT_LIST_HEAD(&sem->wait_list); |
49 | } | 49 | } |
50 | EXPORT_SYMBOL(__init_rwsem); | 50 | EXPORT_SYMBOL(__init_rwsem); |
@@ -145,12 +145,12 @@ void __sched __down_read(struct rw_semaphore *sem) | |||
145 | struct task_struct *tsk; | 145 | struct task_struct *tsk; |
146 | unsigned long flags; | 146 | unsigned long flags; |
147 | 147 | ||
148 | spin_lock_irqsave(&sem->wait_lock, flags); | 148 | raw_spin_lock_irqsave(&sem->wait_lock, flags); |
149 | 149 | ||
150 | if (sem->activity >= 0 && list_empty(&sem->wait_list)) { | 150 | if (sem->activity >= 0 && list_empty(&sem->wait_list)) { |
151 | /* granted */ | 151 | /* granted */ |
152 | sem->activity++; | 152 | sem->activity++; |
153 | spin_unlock_irqrestore(&sem->wait_lock, flags); | 153 | raw_spin_unlock_irqrestore(&sem->wait_lock, flags); |
154 | goto out; | 154 | goto out; |
155 | } | 155 | } |
156 | 156 | ||
@@ -165,7 +165,7 @@ void __sched __down_read(struct rw_semaphore *sem) | |||
165 | list_add_tail(&waiter.list, &sem->wait_list); | 165 | list_add_tail(&waiter.list, &sem->wait_list); |
166 | 166 | ||
167 | /* we don't need to touch the semaphore struct anymore */ | 167 | /* we don't need to touch the semaphore struct anymore */ |
168 | spin_unlock_irqrestore(&sem->wait_lock, flags); | 168 | raw_spin_unlock_irqrestore(&sem->wait_lock, flags); |
169 | 169 | ||
170 | /* wait to be given the lock */ | 170 | /* wait to be given the lock */ |
171 | for (;;) { | 171 | for (;;) { |
@@ -189,7 +189,7 @@ int __down_read_trylock(struct rw_semaphore *sem) | |||
189 | int ret = 0; | 189 | int ret = 0; |
190 | 190 | ||
191 | 191 | ||
192 | spin_lock_irqsave(&sem->wait_lock, flags); | 192 | raw_spin_lock_irqsave(&sem->wait_lock, flags); |
193 | 193 | ||
194 | if (sem->activity >= 0 && list_empty(&sem->wait_list)) { | 194 | if (sem->activity >= 0 && list_empty(&sem->wait_list)) { |
195 | /* granted */ | 195 | /* granted */ |
@@ -197,7 +197,7 @@ int __down_read_trylock(struct rw_semaphore *sem) | |||
197 | ret = 1; | 197 | ret = 1; |
198 | } | 198 | } |
199 | 199 | ||
200 | spin_unlock_irqrestore(&sem->wait_lock, flags); | 200 | raw_spin_unlock_irqrestore(&sem->wait_lock, flags); |
201 | 201 | ||
202 | return ret; | 202 | return ret; |
203 | } | 203 | } |
@@ -212,12 +212,12 @@ void __sched __down_write_nested(struct rw_semaphore *sem, int subclass) | |||
212 | struct task_struct *tsk; | 212 | struct task_struct *tsk; |
213 | unsigned long flags; | 213 | unsigned long flags; |
214 | 214 | ||
215 | spin_lock_irqsave(&sem->wait_lock, flags); | 215 | raw_spin_lock_irqsave(&sem->wait_lock, flags); |
216 | 216 | ||
217 | if (sem->activity == 0 && list_empty(&sem->wait_list)) { | 217 | if (sem->activity == 0 && list_empty(&sem->wait_list)) { |
218 | /* granted */ | 218 | /* granted */ |
219 | sem->activity = -1; | 219 | sem->activity = -1; |
220 | spin_unlock_irqrestore(&sem->wait_lock, flags); | 220 | raw_spin_unlock_irqrestore(&sem->wait_lock, flags); |
221 | goto out; | 221 | goto out; |
222 | } | 222 | } |
223 | 223 | ||
@@ -232,7 +232,7 @@ void __sched __down_write_nested(struct rw_semaphore *sem, int subclass) | |||
232 | list_add_tail(&waiter.list, &sem->wait_list); | 232 | list_add_tail(&waiter.list, &sem->wait_list); |
233 | 233 | ||
234 | /* we don't need to touch the semaphore struct anymore */ | 234 | /* we don't need to touch the semaphore struct anymore */ |
235 | spin_unlock_irqrestore(&sem->wait_lock, flags); | 235 | raw_spin_unlock_irqrestore(&sem->wait_lock, flags); |
236 | 236 | ||
237 | /* wait to be given the lock */ | 237 | /* wait to be given the lock */ |
238 | for (;;) { | 238 | for (;;) { |
@@ -260,7 +260,7 @@ int __down_write_trylock(struct rw_semaphore *sem) | |||
260 | unsigned long flags; | 260 | unsigned long flags; |
261 | int ret = 0; | 261 | int ret = 0; |
262 | 262 | ||
263 | spin_lock_irqsave(&sem->wait_lock, flags); | 263 | raw_spin_lock_irqsave(&sem->wait_lock, flags); |
264 | 264 | ||
265 | if (sem->activity == 0 && list_empty(&sem->wait_list)) { | 265 | if (sem->activity == 0 && list_empty(&sem->wait_list)) { |
266 | /* granted */ | 266 | /* granted */ |
@@ -268,7 +268,7 @@ int __down_write_trylock(struct rw_semaphore *sem) | |||
268 | ret = 1; | 268 | ret = 1; |
269 | } | 269 | } |
270 | 270 | ||
271 | spin_unlock_irqrestore(&sem->wait_lock, flags); | 271 | raw_spin_unlock_irqrestore(&sem->wait_lock, flags); |
272 | 272 | ||
273 | return ret; | 273 | return ret; |
274 | } | 274 | } |
@@ -280,12 +280,12 @@ void __up_read(struct rw_semaphore *sem) | |||
280 | { | 280 | { |
281 | unsigned long flags; | 281 | unsigned long flags; |
282 | 282 | ||
283 | spin_lock_irqsave(&sem->wait_lock, flags); | 283 | raw_spin_lock_irqsave(&sem->wait_lock, flags); |
284 | 284 | ||
285 | if (--sem->activity == 0 && !list_empty(&sem->wait_list)) | 285 | if (--sem->activity == 0 && !list_empty(&sem->wait_list)) |
286 | sem = __rwsem_wake_one_writer(sem); | 286 | sem = __rwsem_wake_one_writer(sem); |
287 | 287 | ||
288 | spin_unlock_irqrestore(&sem->wait_lock, flags); | 288 | raw_spin_unlock_irqrestore(&sem->wait_lock, flags); |
289 | } | 289 | } |
290 | 290 | ||
291 | /* | 291 | /* |
@@ -295,13 +295,13 @@ void __up_write(struct rw_semaphore *sem) | |||
295 | { | 295 | { |
296 | unsigned long flags; | 296 | unsigned long flags; |
297 | 297 | ||
298 | spin_lock_irqsave(&sem->wait_lock, flags); | 298 | raw_spin_lock_irqsave(&sem->wait_lock, flags); |
299 | 299 | ||
300 | sem->activity = 0; | 300 | sem->activity = 0; |
301 | if (!list_empty(&sem->wait_list)) | 301 | if (!list_empty(&sem->wait_list)) |
302 | sem = __rwsem_do_wake(sem, 1); | 302 | sem = __rwsem_do_wake(sem, 1); |
303 | 303 | ||
304 | spin_unlock_irqrestore(&sem->wait_lock, flags); | 304 | raw_spin_unlock_irqrestore(&sem->wait_lock, flags); |
305 | } | 305 | } |
306 | 306 | ||
307 | /* | 307 | /* |
@@ -312,12 +312,12 @@ void __downgrade_write(struct rw_semaphore *sem) | |||
312 | { | 312 | { |
313 | unsigned long flags; | 313 | unsigned long flags; |
314 | 314 | ||
315 | spin_lock_irqsave(&sem->wait_lock, flags); | 315 | raw_spin_lock_irqsave(&sem->wait_lock, flags); |
316 | 316 | ||
317 | sem->activity = 1; | 317 | sem->activity = 1; |
318 | if (!list_empty(&sem->wait_list)) | 318 | if (!list_empty(&sem->wait_list)) |
319 | sem = __rwsem_do_wake(sem, 0); | 319 | sem = __rwsem_do_wake(sem, 0); |
320 | 320 | ||
321 | spin_unlock_irqrestore(&sem->wait_lock, flags); | 321 | raw_spin_unlock_irqrestore(&sem->wait_lock, flags); |
322 | } | 322 | } |
323 | 323 | ||