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34 * libcfs/include/libcfs/linux/linux-time.h
36 * Implementation of portable time API for Linux (kernel and user-level).
38 * Author: Nikita Danilov <nikita@clusterfs.com>
41 #ifndef __LIBCFS_LINUX_LINUX_TIME_H__
42 #define __LIBCFS_LINUX_LINUX_TIME_H__
44 #ifndef __LIBCFS_LIBCFS_H__
45 #error Do not #include this file directly. #include <linux/libcfs/libcfs.h> instead
48 #define ONE_BILLION ((u_int64_t)1000000000)
49 #define ONE_MILLION 1000000
51 #include <linux/module.h>
52 #include <linux/kernel.h>
53 #include <linux/time.h>
54 #include <asm/div64.h>
60 #include <linux/jiffies.h>
63 static inline void cfs_fs_time_usec(struct timespec *t, struct timeval *v)
65 v->tv_sec = t->tv_sec;
66 v->tv_usec = t->tv_nsec / 1000;
70 * Generic kernel stuff
73 static inline unsigned long cfs_time_current(void)
78 static inline void cfs_fs_time_current(struct timespec *t)
83 static inline time_t cfs_fs_time_sec(struct timespec *t)
88 static inline long cfs_time_seconds(int seconds)
90 return ((long)seconds) * HZ;
93 static inline time_t cfs_duration_sec(long d)
98 static inline void cfs_duration_usec(long d, struct timeval *s)
100 #if (BITS_PER_LONG == 32) && (HZ > 4096)
104 t = (d - (long)s->tv_sec * HZ) * ONE_MILLION;
109 s->tv_usec = ((d - (long)s->tv_sec * HZ) * ONE_MILLION) / HZ;
113 #define cfs_time_current_64 get_jiffies_64
115 static inline __u64 cfs_time_add_64(__u64 t, __u64 d)
120 static inline __u64 cfs_time_shift_64(int seconds)
122 return cfs_time_add_64(cfs_time_current_64(),
123 cfs_time_seconds(seconds));
126 static inline int cfs_time_before_64(__u64 t1, __u64 t2)
128 return (__s64)t2 - (__s64)t1 > 0;
131 static inline int cfs_time_beforeq_64(__u64 t1, __u64 t2)
133 return (__s64)t2 - (__s64)t1 >= 0;
141 #define CFS_TIME_T "%lu"
142 #define CFS_DURATION_T "%ld"
144 #endif /* __LIBCFS_LINUX_LINUX_TIME_H__ */