#ifndef _ASMi386_TIMER_H#define _ASMi386_TIMER_H#include <linux/init.h>#include <linux/pm.h> #define TICK_SIZE (tick_nsec / 1000) void setup_pit_timer(void);unsigned long long native_sched_clock(void);unsigned long native_calculate_cpu_khz(void); /* Modifiers for buggy PIT handling */extern int pit_latch_buggy;extern int timer_ack;extern int no_timer_check;extern int no_sync_cmos_clock;extern int recalibrate_cpu_khz(void); #ifndef CONFIG_PARAVIRT#define get_scheduled_cycles(val) rdtscll(val)#define calculate_cpu_khz() native_calculate_cpu_khz()#endif #endif