]>
Commit | Line | Data |
---|---|---|
09b414e8 | 1 | #ifndef _SPL_MUTEX_H |
2 | #define _SPL_MUTEX_H | |
f1ca4da6 | 3 | |
4 | #ifdef __cplusplus | |
5 | extern "C" { | |
6 | #endif | |
7 | ||
f1b59d26 | 8 | #include <linux/module.h> |
115aed0d | 9 | #include <linux/hardirq.h> |
f4b37741 | 10 | #include <sys/types.h> |
9ab1ac14 | 11 | #include <sys/kmem.h> |
f1b59d26 | 12 | |
f1ca4da6 | 13 | #define MUTEX_DEFAULT 0 |
9ab1ac14 | 14 | #define MUTEX_SPIN 1 |
15 | #define MUTEX_ADAPTIVE 2 | |
16 | ||
17 | #define MUTEX_ENTER_TOTAL 0 | |
18 | #define MUTEX_ENTER_NOT_HELD 1 | |
19 | #define MUTEX_ENTER_SPIN 2 | |
20 | #define MUTEX_ENTER_SLEEP 3 | |
21 | #define MUTEX_TRYENTER_TOTAL 4 | |
22 | #define MUTEX_TRYENTER_NOT_HELD 5 | |
23 | #define MUTEX_STATS_SIZE 6 | |
f1ca4da6 | 24 | |
25 | #define KM_MAGIC 0x42424242 | |
26 | #define KM_POISON 0x84 | |
f1b59d26 | 27 | |
f1ca4da6 | 28 | typedef struct { |
9ab1ac14 | 29 | int32_t km_magic; |
30 | int16_t km_type; | |
31 | int16_t km_name_size; | |
f1ca4da6 | 32 | char *km_name; |
33 | struct task_struct *km_owner; | |
9ab1ac14 | 34 | struct semaphore *km_sem; |
35 | #ifdef DEBUG_MUTEX | |
36 | int *km_stats; | |
37 | struct list_head km_list; | |
38 | #endif | |
f1ca4da6 | 39 | } kmutex_t; |
40 | ||
9ab1ac14 | 41 | extern int mutex_spin_max; |
f1ca4da6 | 42 | |
9ab1ac14 | 43 | #ifdef DEBUG_MUTEX |
44 | extern int mutex_stats[MUTEX_STATS_SIZE]; | |
404992e3 | 45 | extern spinlock_t mutex_stats_lock; |
9ab1ac14 | 46 | extern struct list_head mutex_stats_list; |
47 | #define MUTEX_STAT_INC(stats, stat) ((stats)[stat]++) | |
48 | #else | |
49 | #define MUTEX_STAT_INC(stats, stat) | |
50 | #endif | |
d61e12af | 51 | |
9ab1ac14 | 52 | int spl_mutex_init(void); |
53 | void spl_mutex_fini(void); | |
d61e12af | 54 | |
9ab1ac14 | 55 | extern void __spl_mutex_init(kmutex_t *mp, char *name, int type, void *ibc); |
56 | extern void __spl_mutex_destroy(kmutex_t *mp); | |
57 | extern int __mutex_tryenter(kmutex_t *mp); | |
58 | extern void __mutex_enter(kmutex_t *mp); | |
59 | extern void __mutex_exit(kmutex_t *mp); | |
60 | extern int __mutex_owned(kmutex_t *mp); | |
61 | extern kthread_t *__spl_mutex_owner(kmutex_t *mp); | |
f1ca4da6 | 62 | |
9ab1ac14 | 63 | #undef mutex_init |
64 | #undef mutex_destroy | |
d61e12af | 65 | |
9ab1ac14 | 66 | #define mutex_init(mp, name, type, ibc) \ |
67 | ({ \ | |
9ab1ac14 | 68 | if ((name) == NULL) \ |
69 | __spl_mutex_init(mp, #mp, type, ibc); \ | |
70 | else \ | |
71 | __spl_mutex_init(mp, name, type, ibc); \ | |
9ab1ac14 | 72 | }) |
e8b31e84 | 73 | #define mutex_destroy(mp) __spl_mutex_destroy(mp) |
9ab1ac14 | 74 | #define mutex_tryenter(mp) __mutex_tryenter(mp) |
75 | #define mutex_enter(mp) __mutex_enter(mp) | |
76 | #define mutex_exit(mp) __mutex_exit(mp) | |
77 | #define mutex_owned(mp) __mutex_owned(mp) | |
78 | #define mutex_owner(mp) __spl_mutex_owner(mp) | |
79 | #define MUTEX_HELD(mp) mutex_owned(mp) | |
f1ca4da6 | 80 | |
81 | #ifdef __cplusplus | |
82 | } | |
83 | #endif | |
84 | ||
09b414e8 | 85 | #endif /* _SPL_MUTEX_H */ |