tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#ifndef __S390_VDSO_H__
2#define __S390_VDSO_H__
3
4#ifdef __KERNEL__
5
6/* Default link addresses for the vDSOs */
7#define VDSO32_LBASE 0
8#define VDSO64_LBASE 0
9
10#define VDSO_VERSION_STRING LINUX_2.6.29
11
12#ifndef __ASSEMBLY__
13
14/*
15 * Note about the vdso_data and vdso_per_cpu_data structures:
16 *
17 * NEVER USE THEM IN USERSPACE CODE DIRECTLY. The layout of the
18 * structure is supposed to be known only to the function in the vdso
19 * itself and may change without notice.
20 */
21
22struct vdso_data {
23 __u64 tb_update_count; /* Timebase atomicity ctr 0x00 */
24 __u64 xtime_tod_stamp; /* TOD clock for xtime 0x08 */
25 __u64 xtime_clock_sec; /* Kernel time 0x10 */
26 __u64 xtime_clock_nsec; /* 0x18 */
27 __u64 wtom_clock_sec; /* Wall to monotonic clock 0x20 */
28 __u64 wtom_clock_nsec; /* 0x28 */
29 __u32 tz_minuteswest; /* Minutes west of Greenwich 0x30 */
30 __u32 tz_dsttime; /* Type of dst correction 0x34 */
31 __u32 ectg_available;
32 __u32 ntp_mult; /* NTP adjusted multiplier 0x3C */
33};
34
35struct vdso_per_cpu_data {
36 __u64 ectg_timer_base;
37 __u64 ectg_user_time;
38};
39
40extern struct vdso_data *vdso_data;
41
42#ifdef CONFIG_64BIT
43int vdso_alloc_per_cpu(int cpu, struct _lowcore *lowcore);
44void vdso_free_per_cpu(int cpu, struct _lowcore *lowcore);
45#endif
46
47#endif /* __ASSEMBLY__ */
48
49#endif /* __KERNEL__ */
50
51#endif /* __S390_VDSO_H__ */