1#ifndef __LINUX_SPINLOCK_TYPES_RAW_H
2#define __LINUX_SPINLOCK_TYPES_RAW_H
3
4#include <linux/types.h>
5
6#if defined(CONFIG_SMP)
7# include <asm/spinlock_types.h>
8#else
9# include <linux/spinlock_types_up.h>
10#endif
11
12#include <linux/lockdep_types.h>
13
14typedef struct raw_spinlock {
15 arch_spinlock_t raw_lock;
16#ifdef CONFIG_DEBUG_SPINLOCK
17 unsigned int magic, owner_cpu;
18 void *owner;
19#endif
20#ifdef CONFIG_DEBUG_LOCK_ALLOC
21 struct lockdep_map dep_map;
22#endif
23} raw_spinlock_t;
24
25#define SPINLOCK_MAGIC 0xdead4ead
26
27#define SPINLOCK_OWNER_INIT ((void *)-1L)
28
29#ifdef CONFIG_DEBUG_LOCK_ALLOC
30# define RAW_SPIN_DEP_MAP_INIT(lockname) \
31 .dep_map = { \
32 .name = #lockname, \
33 .wait_type_inner = LD_WAIT_SPIN, \
34 }
35# define SPIN_DEP_MAP_INIT(lockname) \
36 .dep_map = { \
37 .name = #lockname, \
38 .wait_type_inner = LD_WAIT_CONFIG, \
39 }
40
41# define LOCAL_SPIN_DEP_MAP_INIT(lockname) \
42 .dep_map = { \
43 .name = #lockname, \
44 .wait_type_inner = LD_WAIT_CONFIG, \
45 .lock_type = LD_LOCK_PERCPU, \
46 }
47#else
48# define RAW_SPIN_DEP_MAP_INIT(lockname)
49# define SPIN_DEP_MAP_INIT(lockname)
50# define LOCAL_SPIN_DEP_MAP_INIT(lockname)
51#endif
52
53#ifdef CONFIG_DEBUG_SPINLOCK
54# define SPIN_DEBUG_INIT(lockname) \
55 .magic = SPINLOCK_MAGIC, \
56 .owner_cpu = -1, \
57 .owner = SPINLOCK_OWNER_INIT,
58#else
59# define SPIN_DEBUG_INIT(lockname)
60#endif
61
62#define __RAW_SPIN_LOCK_INITIALIZER(lockname) \
63{ \
64 .raw_lock = __ARCH_SPIN_LOCK_UNLOCKED, \
65 SPIN_DEBUG_INIT(lockname) \
66 RAW_SPIN_DEP_MAP_INIT(lockname) }
67
68#define __RAW_SPIN_LOCK_UNLOCKED(lockname) \
69 (raw_spinlock_t) __RAW_SPIN_LOCK_INITIALIZER(lockname)
70
71#define DEFINE_RAW_SPINLOCK(x) raw_spinlock_t x = __RAW_SPIN_LOCK_UNLOCKED(x)
72
73#endif /* __LINUX_SPINLOCK_TYPES_RAW_H */
74

source code of linux/include/linux/spinlock_types_raw.h