tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1#ifndef __S390_VDSO_H__
2#define __S390_VDSO_H__
3
4/* Default link addresses for the vDSOs */
5#define VDSO32_LBASE 0
6#define VDSO64_LBASE 0
7
8#define VDSO_VERSION_STRING LINUX_2.6.29
9
10#ifndef __ASSEMBLY__
11
12/*
13 * Note about the vdso_data and vdso_per_cpu_data structures:
14 *
15 * NEVER USE THEM IN USERSPACE CODE DIRECTLY. The layout of the
16 * structure is supposed to be known only to the function in the vdso
17 * itself and may change without notice.
18 */
19
20struct vdso_data {
21 __u64 tb_update_count; /* Timebase atomicity ctr 0x00 */
22 __u64 xtime_tod_stamp; /* TOD clock for xtime 0x08 */
23 __u64 xtime_clock_sec; /* Kernel time 0x10 */
24 __u64 xtime_clock_nsec; /* 0x18 */
25 __u64 xtime_coarse_sec; /* Coarse kernel time 0x20 */
26 __u64 xtime_coarse_nsec; /* 0x28 */
27 __u64 wtom_clock_sec; /* Wall to monotonic clock 0x30 */
28 __u64 wtom_clock_nsec; /* 0x38 */
29 __u64 wtom_coarse_sec; /* Coarse wall to monotonic 0x40 */
30 __u64 wtom_coarse_nsec; /* 0x48 */
31 __u32 tz_minuteswest; /* Minutes west of Greenwich 0x50 */
32 __u32 tz_dsttime; /* Type of dst correction 0x54 */
33 __u32 ectg_available; /* ECTG instruction present 0x58 */
34 __u32 tk_mult; /* Mult. used for xtime_nsec 0x5c */
35 __u32 tk_shift; /* Shift used for xtime_nsec 0x60 */
36};
37
38struct vdso_per_cpu_data {
39 __u64 ectg_timer_base;
40 __u64 ectg_user_time;
41};
42
43extern struct vdso_data *vdso_data;
44
45#ifdef CONFIG_64BIT
46int vdso_alloc_per_cpu(struct _lowcore *lowcore);
47void vdso_free_per_cpu(struct _lowcore *lowcore);
48#endif
49
50#endif /* __ASSEMBLY__ */
51#endif /* __S390_VDSO_H__ */