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 /* Definitions for CONFIG_GENERIC_TIME definitions */ 20 #define __vsyscall_fn \ 21 __attribute__ ((unused, __section__(".vsyscall_fn"))) notrace 22 23 #define VGETCPU_RDTSCP 1 24 #define VGETCPU_LSL 2 25 26 /* kernel space (writeable) */ 27 extern int vgetcpu_mode; 28 extern struct timezone sys_tz; 29 30 #include <asm/vvar.h> 31 32 extern void map_vsyscall(void); 33 34 #endif /* __KERNEL__ */ 35 36 #endif /* _ASM_X86_VSYSCALL_H */ 37