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Linux kernel mirror (for testing)
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linux
1#ifndef _ASM_VGTOD_H
2#define _ASM_VGTOD_H 1
3
4#include <asm/vsyscall.h>
5#include <linux/clocksource.h>
6
7struct vsyscall_gtod_data {
8 seqlock_t lock;
9
10 /* open coded 'struct timespec' */
11 time_t wall_time_sec;
12 u32 wall_time_nsec;
13
14 int sysctl_enabled;
15 struct timezone sys_tz;
16 struct { /* extract of a clocksource struct */
17 cycle_t (*vread)(void);
18 cycle_t cycle_last;
19 cycle_t mask;
20 u32 mult;
21 u32 shift;
22 } clock;
23 struct timespec wall_to_monotonic;
24};
25extern struct vsyscall_gtod_data __vsyscall_gtod_data
26__section_vsyscall_gtod_data;
27extern struct vsyscall_gtod_data vsyscall_gtod_data;
28
29#endif