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/arch/x86/include/asm/vsyscall.h

https://bitbucket.org/thekraven/iscream_thunderc-2.6.35
C++ Header | 44 lines | 31 code | 11 blank | 2 comment | 0 complexity | 9bb866064e07deae1ff46aaf9b4f01ae MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
 1#ifndef _ASM_X86_VSYSCALL_H
 2#define _ASM_X86_VSYSCALL_H
 3
 4enum vsyscall_num {
 5	__NR_vgettimeofday,
 6	__NR_vtime,
 7	__NR_vgetcpu,
 8};
 9
10#define VSYSCALL_START (-10UL << 20)
11#define VSYSCALL_SIZE 1024
12#define VSYSCALL_END (-2UL << 20)
13#define VSYSCALL_MAPPED_PAGES 1
14#define VSYSCALL_ADDR(vsyscall_nr) (VSYSCALL_START+VSYSCALL_SIZE*(vsyscall_nr))
15
16#ifdef __KERNEL__
17#include <linux/seqlock.h>
18
19#define __section_vgetcpu_mode __attribute__ ((unused, __section__ (".vgetcpu_mode"), aligned(16)))
20#define __section_jiffies __attribute__ ((unused, __section__ (".jiffies"), aligned(16)))
21
22/* Definitions for CONFIG_GENERIC_TIME definitions */
23#define __section_vsyscall_gtod_data __attribute__ \
24	((unused, __section__ (".vsyscall_gtod_data"),aligned(16)))
25#define __section_vsyscall_clock __attribute__ \
26	((unused, __section__ (".vsyscall_clock"),aligned(16)))
27#define __vsyscall_fn \
28	__attribute__ ((unused, __section__(".vsyscall_fn"))) notrace
29
30#define VGETCPU_RDTSCP	1
31#define VGETCPU_LSL	2
32
33extern int __vgetcpu_mode;
34extern volatile unsigned long __jiffies;
35
36/* kernel space (writeable) */
37extern int vgetcpu_mode;
38extern struct timezone sys_tz;
39
40extern void map_vsyscall(void);
41
42#endif /* __KERNEL__ */
43
44#endif /* _ASM_X86_VSYSCALL_H */