Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #ifndef _ASM_X86_64_VSYSCALL_H_ |
| 2 | #define _ASM_X86_64_VSYSCALL_H_ |
| 3 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | enum vsyscall_num { |
| 5 | __NR_vgettimeofday, |
| 6 | __NR_vtime, |
Vojtech Pavlik | c08c820 | 2006-09-26 10:52:28 +0200 | [diff] [blame] | 7 | __NR_vgetcpu, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | }; |
| 9 | |
| 10 | #define VSYSCALL_START (-10UL << 20) |
| 11 | #define VSYSCALL_SIZE 1024 |
| 12 | #define VSYSCALL_END (-2UL << 20) |
Ernie Petrides | 103efcd | 2006-12-07 02:14:09 +0100 | [diff] [blame] | 13 | #define VSYSCALL_MAPPED_PAGES 1 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 14 | #define VSYSCALL_ADDR(vsyscall_nr) (VSYSCALL_START+VSYSCALL_SIZE*(vsyscall_nr)) |
| 15 | |
| 16 | #ifdef __KERNEL__ |
David Woodhouse | 75da736 | 2006-09-16 12:15:48 -0700 | [diff] [blame] | 17 | #include <linux/seqlock.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | |
Vojtech Pavlik | c08c820 | 2006-09-26 10:52:28 +0200 | [diff] [blame] | 19 | #define __section_vgetcpu_mode __attribute__ ((unused, __section__ (".vgetcpu_mode"), aligned(16))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 20 | #define __section_jiffies __attribute__ ((unused, __section__ (".jiffies"), aligned(16))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | |
john stultz | 7460ed2 | 2007-02-16 01:28:21 -0800 | [diff] [blame] | 22 | /* Definitions for CONFIG_GENERIC_TIME definitions */ |
| 23 | #define __section_vsyscall_gtod_data __attribute__ \ |
| 24 | ((unused, __section__ (".vsyscall_gtod_data"),aligned(16))) |
Andi Kleen | 2aae950 | 2007-07-21 17:10:01 +0200 | [diff] [blame] | 25 | #define __section_vsyscall_clock __attribute__ \ |
| 26 | ((unused, __section__ (".vsyscall_clock"),aligned(16))) |
Steven Rostedt | 23adec5 | 2008-05-12 21:20:41 +0200 | [diff] [blame^] | 27 | #define __vsyscall_fn \ |
| 28 | __attribute__ ((unused, __section__(".vsyscall_fn"))) notrace |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | |
Vojtech Pavlik | c08c820 | 2006-09-26 10:52:28 +0200 | [diff] [blame] | 30 | #define VGETCPU_RDTSCP 1 |
| 31 | #define VGETCPU_LSL 2 |
| 32 | |
Vojtech Pavlik | c08c820 | 2006-09-26 10:52:28 +0200 | [diff] [blame] | 33 | extern int __vgetcpu_mode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | extern volatile unsigned long __jiffies; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | |
| 36 | /* kernel space (writeable) */ |
Vojtech Pavlik | c08c820 | 2006-09-26 10:52:28 +0200 | [diff] [blame] | 37 | extern int vgetcpu_mode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | extern struct timezone sys_tz; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | |
Ingo Molnar | e402644 | 2008-01-30 13:32:39 +0100 | [diff] [blame] | 40 | extern void map_vsyscall(void); |
| 41 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | #endif /* __KERNEL__ */ |
| 43 | |
| 44 | #endif /* _ASM_X86_64_VSYSCALL_H_ */ |