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-rw-r--r--include/linux/spinlock.h100
1 files changed, 8 insertions, 92 deletions
diff --git a/include/linux/spinlock.h b/include/linux/spinlock.h
index 71dccfeb0d88..a9aaa709fb93 100644
--- a/include/linux/spinlock.h
+++ b/include/linux/spinlock.h
@@ -103,20 +103,6 @@ do { \
103 do { *(lock) = __SPIN_LOCK_UNLOCKED(lock); } while (0) 103 do { *(lock) = __SPIN_LOCK_UNLOCKED(lock); } while (0)
104#endif 104#endif
105 105
106#ifdef CONFIG_DEBUG_SPINLOCK
107 extern void __rwlock_init(rwlock_t *lock, const char *name,
108 struct lock_class_key *key);
109# define rwlock_init(lock) \
110do { \
111 static struct lock_class_key __key; \
112 \
113 __rwlock_init((lock), #lock, &__key); \
114} while (0)
115#else
116# define rwlock_init(lock) \
117 do { *(lock) = __RW_LOCK_UNLOCKED(lock); } while (0)
118#endif
119
120#define spin_is_locked(lock) __raw_spin_is_locked(&(lock)->raw_lock) 106#define spin_is_locked(lock) __raw_spin_is_locked(&(lock)->raw_lock)
121 107
122#ifdef CONFIG_GENERIC_LOCKBREAK 108#ifdef CONFIG_GENERIC_LOCKBREAK
@@ -146,43 +132,21 @@ static inline void smp_mb__after_lock(void) { smp_mb(); }
146#define _raw_spin_lock_flags(lock, flags) _raw_spin_lock(lock) 132#define _raw_spin_lock_flags(lock, flags) _raw_spin_lock(lock)
147 extern int _raw_spin_trylock(spinlock_t *lock); 133 extern int _raw_spin_trylock(spinlock_t *lock);
148 extern void _raw_spin_unlock(spinlock_t *lock); 134 extern void _raw_spin_unlock(spinlock_t *lock);
149 extern void _raw_read_lock(rwlock_t *lock);
150#define _raw_read_lock_flags(lock, flags) _raw_read_lock(lock)
151 extern int _raw_read_trylock(rwlock_t *lock);
152 extern void _raw_read_unlock(rwlock_t *lock);
153 extern void _raw_write_lock(rwlock_t *lock);
154#define _raw_write_lock_flags(lock, flags) _raw_write_lock(lock)
155 extern int _raw_write_trylock(rwlock_t *lock);
156 extern void _raw_write_unlock(rwlock_t *lock);
157#else 135#else
158# define _raw_spin_lock(lock) __raw_spin_lock(&(lock)->raw_lock) 136# define _raw_spin_lock(lock) __raw_spin_lock(&(lock)->raw_lock)
159# define _raw_spin_lock_flags(lock, flags) \ 137# define _raw_spin_lock_flags(lock, flags) \
160 __raw_spin_lock_flags(&(lock)->raw_lock, *(flags)) 138 __raw_spin_lock_flags(&(lock)->raw_lock, *(flags))
161# define _raw_spin_trylock(lock) __raw_spin_trylock(&(lock)->raw_lock) 139# define _raw_spin_trylock(lock) __raw_spin_trylock(&(lock)->raw_lock)
162# define _raw_spin_unlock(lock) __raw_spin_unlock(&(lock)->raw_lock) 140# define _raw_spin_unlock(lock) __raw_spin_unlock(&(lock)->raw_lock)
163# define _raw_read_lock(rwlock) __raw_read_lock(&(rwlock)->raw_lock)
164# define _raw_read_lock_flags(lock, flags) \
165 __raw_read_lock_flags(&(lock)->raw_lock, *(flags))
166# define _raw_read_trylock(rwlock) __raw_read_trylock(&(rwlock)->raw_lock)
167# define _raw_read_unlock(rwlock) __raw_read_unlock(&(rwlock)->raw_lock)
168# define _raw_write_lock(rwlock) __raw_write_lock(&(rwlock)->raw_lock)
169# define _raw_write_lock_flags(lock, flags) \
170 __raw_write_lock_flags(&(lock)->raw_lock, *(flags))
171# define _raw_write_trylock(rwlock) __raw_write_trylock(&(rwlock)->raw_lock)
172# define _raw_write_unlock(rwlock) __raw_write_unlock(&(rwlock)->raw_lock)
173#endif 141#endif
174 142
175#define read_can_lock(rwlock) __raw_read_can_lock(&(rwlock)->raw_lock)
176#define write_can_lock(rwlock) __raw_write_can_lock(&(rwlock)->raw_lock)
177
178/* 143/*
179 * Define the various spin_lock and rw_lock methods. Note we define these 144 * Define the various spin_lock methods. Note we define these
180 * regardless of whether CONFIG_SMP or CONFIG_PREEMPT are set. The various 145 * regardless of whether CONFIG_SMP or CONFIG_PREEMPT are set. The
181 * methods are defined as nops in the case they are not required. 146 * various methods are defined as nops in the case they are not
147 * required.
182 */ 148 */
183#define spin_trylock(lock) __cond_lock(lock, _spin_trylock(lock)) 149#define spin_trylock(lock) __cond_lock(lock, _spin_trylock(lock))
184#define read_trylock(lock) __cond_lock(lock, _read_trylock(lock))
185#define write_trylock(lock) __cond_lock(lock, _write_trylock(lock))
186 150
187#define spin_lock(lock) _spin_lock(lock) 151#define spin_lock(lock) _spin_lock(lock)
188 152
@@ -198,9 +162,6 @@ static inline void smp_mb__after_lock(void) { smp_mb(); }
198# define spin_lock_nest_lock(lock, nest_lock) _spin_lock(lock) 162# define spin_lock_nest_lock(lock, nest_lock) _spin_lock(lock)
199#endif 163#endif
200 164
201#define write_lock(lock) _write_lock(lock)
202#define read_lock(lock) _read_lock(lock)
203
204#if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK) 165#if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK)
205 166
206#define spin_lock_irqsave(lock, flags) \ 167#define spin_lock_irqsave(lock, flags) \
@@ -208,16 +169,6 @@ static inline void smp_mb__after_lock(void) { smp_mb(); }
208 typecheck(unsigned long, flags); \ 169 typecheck(unsigned long, flags); \
209 flags = _spin_lock_irqsave(lock); \ 170 flags = _spin_lock_irqsave(lock); \
210 } while (0) 171 } while (0)
211#define read_lock_irqsave(lock, flags) \
212 do { \
213 typecheck(unsigned long, flags); \
214 flags = _read_lock_irqsave(lock); \
215 } while (0)
216#define write_lock_irqsave(lock, flags) \
217 do { \
218 typecheck(unsigned long, flags); \
219 flags = _write_lock_irqsave(lock); \
220 } while (0)
221 172
222#ifdef CONFIG_DEBUG_LOCK_ALLOC 173#ifdef CONFIG_DEBUG_LOCK_ALLOC
223#define spin_lock_irqsave_nested(lock, flags, subclass) \ 174#define spin_lock_irqsave_nested(lock, flags, subclass) \
@@ -240,16 +191,7 @@ static inline void smp_mb__after_lock(void) { smp_mb(); }
240 typecheck(unsigned long, flags); \ 191 typecheck(unsigned long, flags); \
241 _spin_lock_irqsave(lock, flags); \ 192 _spin_lock_irqsave(lock, flags); \
242 } while (0) 193 } while (0)
243#define read_lock_irqsave(lock, flags) \ 194
244 do { \
245 typecheck(unsigned long, flags); \
246 _read_lock_irqsave(lock, flags); \
247 } while (0)
248#define write_lock_irqsave(lock, flags) \
249 do { \
250 typecheck(unsigned long, flags); \
251 _write_lock_irqsave(lock, flags); \
252 } while (0)
253#define spin_lock_irqsave_nested(lock, flags, subclass) \ 195#define spin_lock_irqsave_nested(lock, flags, subclass) \
254 spin_lock_irqsave(lock, flags) 196 spin_lock_irqsave(lock, flags)
255 197
@@ -257,16 +199,8 @@ static inline void smp_mb__after_lock(void) { smp_mb(); }
257 199
258#define spin_lock_irq(lock) _spin_lock_irq(lock) 200#define spin_lock_irq(lock) _spin_lock_irq(lock)
259#define spin_lock_bh(lock) _spin_lock_bh(lock) 201#define spin_lock_bh(lock) _spin_lock_bh(lock)
260#define read_lock_irq(lock) _read_lock_irq(lock)
261#define read_lock_bh(lock) _read_lock_bh(lock)
262#define write_lock_irq(lock) _write_lock_irq(lock)
263#define write_lock_bh(lock) _write_lock_bh(lock)
264#define spin_unlock(lock) _spin_unlock(lock) 202#define spin_unlock(lock) _spin_unlock(lock)
265#define read_unlock(lock) _read_unlock(lock)
266#define write_unlock(lock) _write_unlock(lock)
267#define spin_unlock_irq(lock) _spin_unlock_irq(lock) 203#define spin_unlock_irq(lock) _spin_unlock_irq(lock)
268#define read_unlock_irq(lock) _read_unlock_irq(lock)
269#define write_unlock_irq(lock) _write_unlock_irq(lock)
270 204
271#define spin_unlock_irqrestore(lock, flags) \ 205#define spin_unlock_irqrestore(lock, flags) \
272 do { \ 206 do { \
@@ -275,20 +209,6 @@ static inline void smp_mb__after_lock(void) { smp_mb(); }
275 } while (0) 209 } while (0)
276#define spin_unlock_bh(lock) _spin_unlock_bh(lock) 210#define spin_unlock_bh(lock) _spin_unlock_bh(lock)
277 211
278#define read_unlock_irqrestore(lock, flags) \
279 do { \
280 typecheck(unsigned long, flags); \
281 _read_unlock_irqrestore(lock, flags); \
282 } while (0)
283#define read_unlock_bh(lock) _read_unlock_bh(lock)
284
285#define write_unlock_irqrestore(lock, flags) \
286 do { \
287 typecheck(unsigned long, flags); \
288 _write_unlock_irqrestore(lock, flags); \
289 } while (0)
290#define write_unlock_bh(lock) _write_unlock_bh(lock)
291
292#define spin_trylock_bh(lock) __cond_lock(lock, _spin_trylock_bh(lock)) 212#define spin_trylock_bh(lock) __cond_lock(lock, _spin_trylock_bh(lock))
293 213
294#define spin_trylock_irq(lock) \ 214#define spin_trylock_irq(lock) \
@@ -305,13 +225,6 @@ static inline void smp_mb__after_lock(void) { smp_mb(); }
305 1 : ({ local_irq_restore(flags); 0; }); \ 225 1 : ({ local_irq_restore(flags); 0; }); \
306}) 226})
307 227
308#define write_trylock_irqsave(lock, flags) \
309({ \
310 local_irq_save(flags); \
311 write_trylock(lock) ? \
312 1 : ({ local_irq_restore(flags); 0; }); \
313})
314
315/* 228/*
316 * Pull the atomic_t declaration: 229 * Pull the atomic_t declaration:
317 * (asm-mips/atomic.h needs above definitions) 230 * (asm-mips/atomic.h needs above definitions)
@@ -335,6 +248,9 @@ extern int _atomic_dec_and_lock(atomic_t *atomic, spinlock_t *lock);
335 */ 248 */
336#define spin_can_lock(lock) (!spin_is_locked(lock)) 249#define spin_can_lock(lock) (!spin_is_locked(lock))
337 250
251/* Include rwlock functions */
252#include <linux/rwlock.h>
253
338/* 254/*
339 * Pull the _spin_*()/_read_*()/_write_*() functions/declarations: 255 * Pull the _spin_*()/_read_*()/_write_*() functions/declarations:
340 */ 256 */