projects / mirror_ubuntu-zesty-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | #ifndef _ASM_X86_64_VSYSCALL_H_ |
| 2 | #define _ASM_X86_64_VSYSCALL_H_ | |
| 3 | ||
| 4 | #include <linux/seqlock.h> | |
| 5 | ||
| 6 | enum vsyscall_num { | |
| 7 | __NR_vgettimeofday, | |
| 8 | __NR_vtime, | |
| 9 | }; | |
| 10 | ||
| 11 | #define VSYSCALL_START (-10UL << 20) | |
| 12 | #define VSYSCALL_SIZE 1024 | |
| 13 | #define VSYSCALL_END (-2UL << 20) | |
| 14 | #define VSYSCALL_ADDR(vsyscall_nr) (VSYSCALL_START+VSYSCALL_SIZE*(vsyscall_nr)) | |
| 15 | ||
| 16 | #ifdef __KERNEL__ | |
| 17 | ||
| 18 | #define __section_vxtime __attribute__ ((unused, __section__ (".vxtime"), aligned(16))) | |
| 19 | #define __section_wall_jiffies __attribute__ ((unused, __section__ (".wall_jiffies"), aligned(16))) | |
| 20 | #define __section_jiffies __attribute__ ((unused, __section__ (".jiffies"), aligned(16))) | |
| 21 | #define __section_sys_tz __attribute__ ((unused, __section__ (".sys_tz"), aligned(16))) | |
| 22 | #define __section_sysctl_vsyscall __attribute__ ((unused, __section__ (".sysctl_vsyscall"), aligned(16))) | |
| 23 | #define __section_xtime __attribute__ ((unused, __section__ (".xtime"), aligned(16))) | |
| 24 | #define __section_xtime_lock __attribute__ ((unused, __section__ (".xtime_lock"), aligned(16))) | |
| 25 | ||
| 26 | #define VXTIME_TSC 1 | |
| 27 | #define VXTIME_HPET 2 | |
| 312df5f1 | 28 | #define VXTIME_PMTMR 3 |
| 1da177e4 LT |
29 | |
| 30 | struct vxtime_data { | |
| 31 | long hpet_address; /* HPET base address */ | |
| 32 | unsigned long hz; /* HPET clocks / sec */ | |
| 33 | int last; | |
| 34 | unsigned long last_tsc; | |
| 35 | long quot; | |
| 36 | long tsc_quot; | |
| 37 | int mode; | |
| 38 | }; | |
| 39 | ||
| 40 | #define hpet_readl(a) readl((void *)fix_to_virt(FIX_HPET_BASE) + a) | |
| 41 | #define hpet_writel(d,a) writel(d, (void *)fix_to_virt(FIX_HPET_BASE) + a) | |
| 42 | ||
| 43 | /* vsyscall space (readonly) */ | |
| 44 | extern struct vxtime_data __vxtime; | |
| 45 | extern struct timespec __xtime; | |
| 46 | extern volatile unsigned long __jiffies; | |
| 47 | extern unsigned long __wall_jiffies; | |
| 48 | extern struct timezone __sys_tz; | |
| 49 | extern seqlock_t __xtime_lock; | |
| 50 | ||
| 51 | /* kernel space (writeable) */ | |
| 52 | extern struct vxtime_data vxtime; | |
| 53 | extern unsigned long wall_jiffies; | |
| 54 | extern struct timezone sys_tz; | |
| 55 | extern int sysctl_vsyscall; | |
| 56 | extern seqlock_t xtime_lock; | |
| 57 | ||
| 312df5f1 AK |
58 | extern int sysctl_vsyscall; |
| 59 | ||
| 1da177e4 LT |
60 | #define ARCH_HAVE_XTIME_LOCK 1 |
| 61 | ||
| 62 | #endif /* __KERNEL__ */ | |
| 63 | ||
| 64 | #endif /* _ASM_X86_64_VSYSCALL_H_ */ |