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Diffstat (limited to 'include/linux/spinlock_api_smp.h')
-rw-r--r--include/linux/spinlock_api_smp.h75
1 files changed, 28 insertions, 47 deletions
diff --git a/include/linux/spinlock_api_smp.h b/include/linux/spinlock_api_smp.h
index 7a7e18fc2415..8264a7f459bc 100644
--- a/include/linux/spinlock_api_smp.h
+++ b/include/linux/spinlock_api_smp.h
@@ -60,137 +60,118 @@ void __lockfunc _read_unlock_irqrestore(rwlock_t *lock, unsigned long flags)
60void __lockfunc _write_unlock_irqrestore(rwlock_t *lock, unsigned long flags) 60void __lockfunc _write_unlock_irqrestore(rwlock_t *lock, unsigned long flags)
61 __releases(lock); 61 __releases(lock);
62 62
63/* 63#ifdef CONFIG_INLINE_SPIN_LOCK
64 * We inline the unlock functions in the nondebug case:
65 */
66#if !defined(CONFIG_DEBUG_SPINLOCK) && !defined(CONFIG_PREEMPT)
67#define __always_inline__spin_unlock
68#define __always_inline__read_unlock
69#define __always_inline__write_unlock
70#define __always_inline__spin_unlock_irq
71#define __always_inline__read_unlock_irq
72#define __always_inline__write_unlock_irq
73#endif
74
75#ifndef CONFIG_DEBUG_SPINLOCK
76#ifndef CONFIG_GENERIC_LOCKBREAK
77
78#ifdef __always_inline__spin_lock
79#define _spin_lock(lock) __spin_lock(lock) 64#define _spin_lock(lock) __spin_lock(lock)
80#endif 65#endif
81 66
82#ifdef __always_inline__read_lock 67#ifdef CONFIG_INLINE_READ_LOCK
83#define _read_lock(lock) __read_lock(lock) 68#define _read_lock(lock) __read_lock(lock)
84#endif 69#endif
85 70
86#ifdef __always_inline__write_lock 71#ifdef CONFIG_INLINE_WRITE_LOCK
87#define _write_lock(lock) __write_lock(lock) 72#define _write_lock(lock) __write_lock(lock)
88#endif 73#endif
89 74
90#ifdef __always_inline__spin_lock_bh 75#ifdef CONFIG_INLINE_SPIN_LOCK_BH
91#define _spin_lock_bh(lock) __spin_lock_bh(lock) 76#define _spin_lock_bh(lock) __spin_lock_bh(lock)
92#endif 77#endif
93 78
94#ifdef __always_inline__read_lock_bh 79#ifdef CONFIG_INLINE_READ_LOCK_BH
95#define _read_lock_bh(lock) __read_lock_bh(lock) 80#define _read_lock_bh(lock) __read_lock_bh(lock)
96#endif 81#endif
97 82
98#ifdef __always_inline__write_lock_bh 83#ifdef CONFIG_INLINE_WRITE_LOCK_BH
99#define _write_lock_bh(lock) __write_lock_bh(lock) 84#define _write_lock_bh(lock) __write_lock_bh(lock)
100#endif 85#endif
101 86
102#ifdef __always_inline__spin_lock_irq 87#ifdef CONFIG_INLINE_SPIN_LOCK_IRQ
103#define _spin_lock_irq(lock) __spin_lock_irq(lock) 88#define _spin_lock_irq(lock) __spin_lock_irq(lock)
104#endif 89#endif
105 90
106#ifdef __always_inline__read_lock_irq 91#ifdef CONFIG_INLINE_READ_LOCK_IRQ
107#define _read_lock_irq(lock) __read_lock_irq(lock) 92#define _read_lock_irq(lock) __read_lock_irq(lock)
108#endif 93#endif
109 94
110#ifdef __always_inline__write_lock_irq 95#ifdef CONFIG_INLINE_WRITE_LOCK_IRQ
111#define _write_lock_irq(lock) __write_lock_irq(lock) 96#define _write_lock_irq(lock) __write_lock_irq(lock)
112#endif 97#endif
113 98
114#ifdef __always_inline__spin_lock_irqsave 99#ifdef CONFIG_INLINE_SPIN_LOCK_IRQSAVE
115#define _spin_lock_irqsave(lock) __spin_lock_irqsave(lock) 100#define _spin_lock_irqsave(lock) __spin_lock_irqsave(lock)
116#endif 101#endif
117 102
118#ifdef __always_inline__read_lock_irqsave 103#ifdef CONFIG_INLINE_READ_LOCK_IRQSAVE
119#define _read_lock_irqsave(lock) __read_lock_irqsave(lock) 104#define _read_lock_irqsave(lock) __read_lock_irqsave(lock)
120#endif 105#endif
121 106
122#ifdef __always_inline__write_lock_irqsave 107#ifdef CONFIG_INLINE_WRITE_LOCK_IRQSAVE
123#define _write_lock_irqsave(lock) __write_lock_irqsave(lock) 108#define _write_lock_irqsave(lock) __write_lock_irqsave(lock)
124#endif 109#endif
125 110
126#endif /* !CONFIG_GENERIC_LOCKBREAK */ 111#ifdef CONFIG_INLINE_SPIN_TRYLOCK
127
128#ifdef __always_inline__spin_trylock
129#define _spin_trylock(lock) __spin_trylock(lock) 112#define _spin_trylock(lock) __spin_trylock(lock)
130#endif 113#endif
131 114
132#ifdef __always_inline__read_trylock 115#ifdef CONFIG_INLINE_READ_TRYLOCK
133#define _read_trylock(lock) __read_trylock(lock) 116#define _read_trylock(lock) __read_trylock(lock)
134#endif 117#endif
135 118
136#ifdef __always_inline__write_trylock 119#ifdef CONFIG_INLINE_WRITE_TRYLOCK
137#define _write_trylock(lock) __write_trylock(lock) 120#define _write_trylock(lock) __write_trylock(lock)
138#endif 121#endif
139 122
140#ifdef __always_inline__spin_trylock_bh 123#ifdef CONFIG_INLINE_SPIN_TRYLOCK_BH
141#define _spin_trylock_bh(lock) __spin_trylock_bh(lock) 124#define _spin_trylock_bh(lock) __spin_trylock_bh(lock)
142#endif 125#endif
143 126
144#ifdef __always_inline__spin_unlock 127#ifdef CONFIG_INLINE_SPIN_UNLOCK
145#define _spin_unlock(lock) __spin_unlock(lock) 128#define _spin_unlock(lock) __spin_unlock(lock)
146#endif 129#endif
147 130
148#ifdef __always_inline__read_unlock 131#ifdef CONFIG_INLINE_READ_UNLOCK
149#define _read_unlock(lock) __read_unlock(lock) 132#define _read_unlock(lock) __read_unlock(lock)
150#endif 133#endif
151 134
152#ifdef __always_inline__write_unlock 135#ifdef CONFIG_INLINE_WRITE_UNLOCK
153#define _write_unlock(lock) __write_unlock(lock) 136#define _write_unlock(lock) __write_unlock(lock)
154#endif 137#endif
155 138
156#ifdef __always_inline__spin_unlock_bh 139#ifdef CONFIG_INLINE_SPIN_UNLOCK_BH
157#define _spin_unlock_bh(lock) __spin_unlock_bh(lock) 140#define _spin_unlock_bh(lock) __spin_unlock_bh(lock)
158#endif 141#endif
159 142
160#ifdef __always_inline__read_unlock_bh 143#ifdef CONFIG_INLINE_READ_UNLOCK_BH
161#define _read_unlock_bh(lock) __read_unlock_bh(lock) 144#define _read_unlock_bh(lock) __read_unlock_bh(lock)
162#endif 145#endif
163 146
164#ifdef __always_inline__write_unlock_bh 147#ifdef CONFIG_INLINE_WRITE_UNLOCK_BH
165#define _write_unlock_bh(lock) __write_unlock_bh(lock) 148#define _write_unlock_bh(lock) __write_unlock_bh(lock)
166#endif 149#endif
167 150
168#ifdef __always_inline__spin_unlock_irq 151#ifdef CONFIG_INLINE_SPIN_UNLOCK_IRQ
169#define _spin_unlock_irq(lock) __spin_unlock_irq(lock) 152#define _spin_unlock_irq(lock) __spin_unlock_irq(lock)
170#endif 153#endif
171 154
172#ifdef __always_inline__read_unlock_irq 155#ifdef CONFIG_INLINE_READ_UNLOCK_IRQ
173#define _read_unlock_irq(lock) __read_unlock_irq(lock) 156#define _read_unlock_irq(lock) __read_unlock_irq(lock)
174#endif 157#endif
175 158
176#ifdef __always_inline__write_unlock_irq 159#ifdef CONFIG_INLINE_WRITE_UNLOCK_IRQ
177#define _write_unlock_irq(lock) __write_unlock_irq(lock) 160#define _write_unlock_irq(lock) __write_unlock_irq(lock)
178#endif 161#endif
179 162
180#ifdef __always_inline__spin_unlock_irqrestore 163#ifdef CONFIG_INLINE_SPIN_UNLOCK_IRQRESTORE
181#define _spin_unlock_irqrestore(lock, flags) __spin_unlock_irqrestore(lock, flags) 164#define _spin_unlock_irqrestore(lock, flags) __spin_unlock_irqrestore(lock, flags)
182#endif 165#endif
183 166
184#ifdef __always_inline__read_unlock_irqrestore 167#ifdef CONFIG_INLINE_READ_UNLOCK_IRQRESTORE
185#define _read_unlock_irqrestore(lock, flags) __read_unlock_irqrestore(lock, flags) 168#define _read_unlock_irqrestore(lock, flags) __read_unlock_irqrestore(lock, flags)
186#endif 169#endif
187 170
188#ifdef __always_inline__write_unlock_irqrestore 171#ifdef CONFIG_INLINE_WRITE_UNLOCK_IRQRESTORE
189#define _write_unlock_irqrestore(lock, flags) __write_unlock_irqrestore(lock, flags) 172#define _write_unlock_irqrestore(lock, flags) __write_unlock_irqrestore(lock, flags)
190#endif 173#endif
191 174
192#endif /* CONFIG_DEBUG_SPINLOCK */
193
194static inline int __spin_trylock(spinlock_t *lock) 175static inline int __spin_trylock(spinlock_t *lock)
195{ 176{
196 preempt_disable(); 177 preempt_disable();