1 #ifndef _ASM_X86_64_VSYSCALL_H_ 2 #define _ASM_X86_64_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 __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 __attribute__ ((unused,__section__(".vsyscall_fn"))) 28 29 #define VGETCPU_RDTSCP 1 30 #define VGETCPU_LSL 2 31 32 extern int __vgetcpu_mode; 33 extern volatile unsigned long __jiffies; 34 35 /* kernel space (writeable) */ 36 extern int vgetcpu_mode; 37 extern struct timezone sys_tz; 38 39 #endif /* __KERNEL__ */ 40 41 #endif /* _ASM_X86_64_VSYSCALL_H_ */ 42