locking: Remove deprecated lock initializers
[linux-2.6.git] / include / linux / spinlock_types.h
1 #ifndef __LINUX_SPINLOCK_TYPES_H
2 #define __LINUX_SPINLOCK_TYPES_H
3
4 /*
5  * include/linux/spinlock_types.h - generic spinlock type definitions
6  *                                  and initializers
7  *
8  * portions Copyright 2005, Red Hat, Inc., Ingo Molnar
9  * Released under the General Public License (GPL).
10  */
11
12 #if defined(CONFIG_SMP)
13 # include <asm/spinlock_types.h>
14 #else
15 # include <linux/spinlock_types_up.h>
16 #endif
17
18 #include <linux/lockdep.h>
19
20 typedef struct raw_spinlock {
21         arch_spinlock_t raw_lock;
22 #ifdef CONFIG_GENERIC_LOCKBREAK
23         unsigned int break_lock;
24 #endif
25 #ifdef CONFIG_DEBUG_SPINLOCK
26         unsigned int magic, owner_cpu;
27         void *owner;
28 #endif
29 #ifdef CONFIG_DEBUG_LOCK_ALLOC
30         struct lockdep_map dep_map;
31 #endif
32 } raw_spinlock_t;
33
34 #define SPINLOCK_MAGIC          0xdead4ead
35
36 #define SPINLOCK_OWNER_INIT     ((void *)-1L)
37
38 #ifdef CONFIG_DEBUG_LOCK_ALLOC
39 # define SPIN_DEP_MAP_INIT(lockname)    .dep_map = { .name = #lockname }
40 #else
41 # define SPIN_DEP_MAP_INIT(lockname)
42 #endif
43
44 #ifdef CONFIG_DEBUG_SPINLOCK
45 # define SPIN_DEBUG_INIT(lockname)              \
46         .magic = SPINLOCK_MAGIC,                \
47         .owner_cpu = -1,                        \
48         .owner = SPINLOCK_OWNER_INIT,
49 #else
50 # define SPIN_DEBUG_INIT(lockname)
51 #endif
52
53 #define __RAW_SPIN_LOCK_INITIALIZER(lockname)   \
54         {                                       \
55         .raw_lock = __ARCH_SPIN_LOCK_UNLOCKED,  \
56         SPIN_DEBUG_INIT(lockname)               \
57         SPIN_DEP_MAP_INIT(lockname) }
58
59 #define __RAW_SPIN_LOCK_UNLOCKED(lockname)      \
60         (raw_spinlock_t) __RAW_SPIN_LOCK_INITIALIZER(lockname)
61
62 #define DEFINE_RAW_SPINLOCK(x)  raw_spinlock_t x = __RAW_SPIN_LOCK_UNLOCKED(x)
63
64 typedef struct spinlock {
65         union {
66                 struct raw_spinlock rlock;
67
68 #ifdef CONFIG_DEBUG_LOCK_ALLOC
69 # define LOCK_PADSIZE (offsetof(struct raw_spinlock, dep_map))
70                 struct {
71                         u8 __padding[LOCK_PADSIZE];
72                         struct lockdep_map dep_map;
73                 };
74 #endif
75         };
76 } spinlock_t;
77
78 #define __SPIN_LOCK_INITIALIZER(lockname) \
79         { { .rlock = __RAW_SPIN_LOCK_INITIALIZER(lockname) } }
80
81 #define __SPIN_LOCK_UNLOCKED(lockname) \
82         (spinlock_t ) __SPIN_LOCK_INITIALIZER(lockname)
83
84 #define DEFINE_SPINLOCK(x)      spinlock_t x = __SPIN_LOCK_UNLOCKED(x)
85
86 #include <linux/rwlock_types.h>
87
88 #endif /* __LINUX_SPINLOCK_TYPES_H */