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Commit | Line | Data |
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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 | |
4f86a887 | 13 | #define DEBUG_MUTEX |
f1ca4da6 | 14 | |
15 | #define MUTEX_DEFAULT 0 | |
9ab1ac14 | 16 | #define MUTEX_SPIN 1 |
17 | #define MUTEX_ADAPTIVE 2 | |
18 | ||
19 | #define MUTEX_ENTER_TOTAL 0 | |
20 | #define MUTEX_ENTER_NOT_HELD 1 | |
21 | #define MUTEX_ENTER_SPIN 2 | |
22 | #define MUTEX_ENTER_SLEEP 3 | |
23 | #define MUTEX_TRYENTER_TOTAL 4 | |
24 | #define MUTEX_TRYENTER_NOT_HELD 5 | |
25 | #define MUTEX_STATS_SIZE 6 | |
f1ca4da6 | 26 | |
27 | #define KM_MAGIC 0x42424242 | |
28 | #define KM_POISON 0x84 | |
f1b59d26 | 29 | |
f1ca4da6 | 30 | typedef struct { |
9ab1ac14 | 31 | int32_t km_magic; |
32 | int16_t km_type; | |
33 | int16_t km_name_size; | |
f1ca4da6 | 34 | char *km_name; |
35 | struct task_struct *km_owner; | |
9ab1ac14 | 36 | struct semaphore *km_sem; |
37 | #ifdef DEBUG_MUTEX | |
38 | int *km_stats; | |
39 | struct list_head km_list; | |
40 | #endif | |
f1ca4da6 | 41 | } kmutex_t; |
42 | ||
9ab1ac14 | 43 | extern int mutex_spin_max; |
f1ca4da6 | 44 | |
9ab1ac14 | 45 | #ifdef DEBUG_MUTEX |
46 | extern int mutex_stats[MUTEX_STATS_SIZE]; | |
4f86a887 | 47 | extern struct rw_semaphore mutex_stats_sem; |
9ab1ac14 | 48 | extern struct list_head mutex_stats_list; |
49 | #define MUTEX_STAT_INC(stats, stat) ((stats)[stat]++) | |
50 | #else | |
51 | #define MUTEX_STAT_INC(stats, stat) | |
52 | #endif | |
d61e12af | 53 | |
9ab1ac14 | 54 | int spl_mutex_init(void); |
55 | void spl_mutex_fini(void); | |
d61e12af | 56 | |
9ab1ac14 | 57 | extern void __spl_mutex_init(kmutex_t *mp, char *name, int type, void *ibc); |
58 | extern void __spl_mutex_destroy(kmutex_t *mp); | |
59 | extern int __mutex_tryenter(kmutex_t *mp); | |
60 | extern void __mutex_enter(kmutex_t *mp); | |
61 | extern void __mutex_exit(kmutex_t *mp); | |
62 | extern int __mutex_owned(kmutex_t *mp); | |
63 | extern kthread_t *__spl_mutex_owner(kmutex_t *mp); | |
f1ca4da6 | 64 | |
9ab1ac14 | 65 | #undef mutex_init |
66 | #undef mutex_destroy | |
d61e12af | 67 | |
9ab1ac14 | 68 | #define mutex_init(mp, name, type, ibc) \ |
69 | ({ \ | |
9ab1ac14 | 70 | if ((name) == NULL) \ |
71 | __spl_mutex_init(mp, #mp, type, ibc); \ | |
72 | else \ | |
73 | __spl_mutex_init(mp, name, type, ibc); \ | |
9ab1ac14 | 74 | }) |
e8b31e84 | 75 | #define mutex_destroy(mp) __spl_mutex_destroy(mp) |
9ab1ac14 | 76 | #define mutex_tryenter(mp) __mutex_tryenter(mp) |
77 | #define mutex_enter(mp) __mutex_enter(mp) | |
78 | #define mutex_exit(mp) __mutex_exit(mp) | |
79 | #define mutex_owned(mp) __mutex_owned(mp) | |
80 | #define mutex_owner(mp) __spl_mutex_owner(mp) | |
81 | #define MUTEX_HELD(mp) mutex_owned(mp) | |
f1ca4da6 | 82 | |
83 | #ifdef __cplusplus | |
84 | } | |
85 | #endif | |
86 | ||
09b414e8 | 87 | #endif /* _SPL_MUTEX_H */ |