1 #ifndef _ASM_X86_VSYSCALL_H 2 #define _ASM_X86_VSYSCALL_H 3 4 enum 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 VGETCPU_RDTSCP 1 20 #define VGETCPU_LSL 2 21 22 /* kernel space (writeable) */ 23 extern int vgetcpu_mode; 24 extern struct timezone sys_tz; 25 26 #include <asm/vvar.h> 27 28 extern void map_vsyscall(void); 29 30 #endif /* __KERNEL__ */ 31 32 #endif /* _ASM_X86_VSYSCALL_H */ 33