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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 22:20:36 (GMT) |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 22:20:36 (GMT) |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-x86_64/vsyscall.h | |
download | linux-fsl-qoriq-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'include/asm-x86_64/vsyscall.h')
-rw-r--r-- | include/asm-x86_64/vsyscall.h | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/include/asm-x86_64/vsyscall.h b/include/asm-x86_64/vsyscall.h new file mode 100644 index 0000000..b0c8d43 --- /dev/null +++ b/include/asm-x86_64/vsyscall.h @@ -0,0 +1,61 @@ +#ifndef _ASM_X86_64_VSYSCALL_H_ +#define _ASM_X86_64_VSYSCALL_H_ + +#include <linux/seqlock.h> + +enum vsyscall_num { + __NR_vgettimeofday, + __NR_vtime, +}; + +#define VSYSCALL_START (-10UL << 20) +#define VSYSCALL_SIZE 1024 +#define VSYSCALL_END (-2UL << 20) +#define VSYSCALL_ADDR(vsyscall_nr) (VSYSCALL_START+VSYSCALL_SIZE*(vsyscall_nr)) + +#ifdef __KERNEL__ + +#define __section_vxtime __attribute__ ((unused, __section__ (".vxtime"), aligned(16))) +#define __section_wall_jiffies __attribute__ ((unused, __section__ (".wall_jiffies"), aligned(16))) +#define __section_jiffies __attribute__ ((unused, __section__ (".jiffies"), aligned(16))) +#define __section_sys_tz __attribute__ ((unused, __section__ (".sys_tz"), aligned(16))) +#define __section_sysctl_vsyscall __attribute__ ((unused, __section__ (".sysctl_vsyscall"), aligned(16))) +#define __section_xtime __attribute__ ((unused, __section__ (".xtime"), aligned(16))) +#define __section_xtime_lock __attribute__ ((unused, __section__ (".xtime_lock"), aligned(16))) + +#define VXTIME_TSC 1 +#define VXTIME_HPET 2 + +struct vxtime_data { + long hpet_address; /* HPET base address */ + unsigned long hz; /* HPET clocks / sec */ + int last; + unsigned long last_tsc; + long quot; + long tsc_quot; + int mode; +}; + +#define hpet_readl(a) readl((void *)fix_to_virt(FIX_HPET_BASE) + a) +#define hpet_writel(d,a) writel(d, (void *)fix_to_virt(FIX_HPET_BASE) + a) + +/* vsyscall space (readonly) */ +extern struct vxtime_data __vxtime; +extern struct timespec __xtime; +extern volatile unsigned long __jiffies; +extern unsigned long __wall_jiffies; +extern struct timezone __sys_tz; +extern seqlock_t __xtime_lock; + +/* kernel space (writeable) */ +extern struct vxtime_data vxtime; +extern unsigned long wall_jiffies; +extern struct timezone sys_tz; +extern int sysctl_vsyscall; +extern seqlock_t xtime_lock; + +#define ARCH_HAVE_XTIME_LOCK 1 + +#endif /* __KERNEL__ */ + +#endif /* _ASM_X86_64_VSYSCALL_H_ */ |