init: do not create lat logs when not needed
[fio.git] / gettime.h
CommitLineData
a7346816
JA
1#ifndef FIO_GETTIME_H
2#define FIO_GETTIME_H
3
3d2d14bc
SW
4#include <sys/time.h>
5
27325ed5 6#include "arch/arch.h"
817a1d83 7#include "lib/seqlock.h"
27325ed5 8
a7346816
JA
9/*
10 * Clock sources
11 */
12enum fio_cs {
13 CS_GTOD = 1,
14 CS_CGETTIME,
15 CS_CPUCLOCK,
01423eae 16 CS_INVAL,
a7346816
JA
17};
18
69212fc4 19extern int fio_get_mono_time(struct timespec *);
8b6a404c 20extern void fio_gettime(struct timespec *, void *);
a7346816
JA
21extern void fio_gtod_init(void);
22extern void fio_clock_init(void);
23extern int fio_start_gtod_thread(void);
aad918e4 24extern int fio_monotonic_clocktest(int debug);
a0eba820 25extern void fio_local_clock_init(void);
a7346816 26
817a1d83
BVA
27extern struct fio_ts {
28 struct seqlock seqlock;
29 struct timespec ts;
30} *fio_ts;
39ab7da2 31
8b6a404c 32static inline int fio_gettime_offload(struct timespec *ts)
27325ed5 33{
817a1d83 34 unsigned int seq;
27325ed5 35
8b6a404c 36 if (!fio_ts)
27325ed5
JA
37 return 0;
38
39 do {
817a1d83
BVA
40 seq = read_seqlock_begin(&fio_ts->seqlock);
41 *ts = fio_ts->ts;
42 } while (read_seqlock_retry(&fio_ts->seqlock, seq));
27325ed5
JA
43
44 return 1;
45}
46
79c896a1
JA
47extern void fio_gtod_set_cpu(unsigned int cpu);
48
a7346816 49#endif