| /* |
| * linux/include/asm-x86_64/timex.h |
| * |
| * x86-64 architecture timex specifications |
| */ |
| #ifndef _ASMx8664_TIMEX_H |
| #define _ASMx8664_TIMEX_H |
| |
| #include <asm/8253pit.h> |
| #include <asm/msr.h> |
| #include <asm/vsyscall.h> |
| #include <asm/hpet.h> |
| #include <asm/system.h> |
| #include <asm/processor.h> |
| #include <asm/tsc.h> |
| #include <linux/compiler.h> |
| |
| #define CLOCK_TICK_RATE PIT_TICK_RATE /* Underlying HZ */ |
| |
| extern int read_current_timer(unsigned long *timer_value); |
| #define ARCH_HAS_READ_CURRENT_TIMER 1 |
| |
| #define USEC_PER_TICK (USEC_PER_SEC / HZ) |
| #define NSEC_PER_TICK (NSEC_PER_SEC / HZ) |
| #define FSEC_PER_TICK (FSEC_PER_SEC / HZ) |
| |
| #define NS_SCALE 10 /* 2^10, carefully chosen */ |
| #define US_SCALE 32 /* 2^32, arbitralrily chosen */ |
| |
| extern void mark_tsc_unstable(char *msg); |
| extern void set_cyc2ns_scale(unsigned long khz); |
| #endif |
