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 */ 45