Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris...
[linux-2.6/verdex.git] / include / asm-x86 / vsyscall.h
blob17b3700949bfe3e90ef495fd8e09c60f7450c129
1 #ifndef _ASM_X86_64_VSYSCALL_H_
2 #define _ASM_X86_64_VSYSCALL_H_
4 enum vsyscall_num {
5 __NR_vgettimeofday,
6 __NR_vtime,
7 __NR_vgetcpu,
8 };
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))
16 #ifdef __KERNEL__
17 #include <linux/seqlock.h>
19 #define __section_vgetcpu_mode __attribute__ ((unused, __section__ (".vgetcpu_mode"), aligned(16)))
20 #define __section_jiffies __attribute__ ((unused, __section__ (".jiffies"), aligned(16)))
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")))
29 #define VGETCPU_RDTSCP 1
30 #define VGETCPU_LSL 2
32 extern int __vgetcpu_mode;
33 extern volatile unsigned long __jiffies;
35 /* kernel space (writeable) */
36 extern int vgetcpu_mode;
37 extern struct timezone sys_tz;
39 extern void map_vsyscall(void);
41 #endif /* __KERNEL__ */
43 #endif /* _ASM_X86_64_VSYSCALL_H_ */