X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=include%2Fasm-i386%2Ftimex.h;h=3666044409f06c6c2ec0c1ee6ba45d9dbeb1cd50;hb=97bf2856c6014879bd04983a3e9dfcdac1e7fe85;hp=a447a9938615aba6caafe78cf51e02033fa80d53;hpb=5273a3df6485dc2ad6aa7ddd441b9a21970f003b;p=linux-2.6.git diff --git a/include/asm-i386/timex.h b/include/asm-i386/timex.h index a447a9938..366604440 100644 --- a/include/asm-i386/timex.h +++ b/include/asm-i386/timex.h @@ -6,54 +6,17 @@ #ifndef _ASMi386_TIMEX_H #define _ASMi386_TIMEX_H -#include -#include +#include +#include -#ifdef CONFIG_X86_PC9800 - extern int CLOCK_TICK_RATE; -#else #ifdef CONFIG_X86_ELAN # define CLOCK_TICK_RATE 1189200 /* AMD Elan has different frequency! */ #else # define CLOCK_TICK_RATE 1193182 /* Underlying HZ */ #endif -#endif - -#define CLOCK_TICK_FACTOR 20 /* Factor of both 1000000 and CLOCK_TICK_RATE */ -#define FINETUNE ((((((long)LATCH * HZ - CLOCK_TICK_RATE) << SHIFT_HZ) * \ - (1000000/CLOCK_TICK_FACTOR) / (CLOCK_TICK_RATE/CLOCK_TICK_FACTOR)) \ - << (SHIFT_SCALE-SHIFT_HZ)) / HZ) - -/* - * Standard way to access the cycle counter on i586+ CPUs. - * Currently only used on SMP. - * - * If you really have a SMP machine with i486 chips or older, - * compile for that, and this will just always return zero. - * That's ok, it just means that the nicer scheduling heuristics - * won't work for you. - * - * We only use the low 32 bits, and we'd simply better make sure - * that we reschedule before that wraps. Scheduling at least every - * four billion cycles just basically sounds like a good idea, - * regardless of how fast the machine is. - */ -typedef unsigned long long cycles_t; - -extern cycles_t cacheflush_time; -static inline cycles_t get_cycles (void) -{ -#ifndef CONFIG_X86_TSC - return 0; -#else - unsigned long long ret; - - rdtscll(ret); - return ret; -#endif -} -extern unsigned long cpu_khz; +extern int read_current_timer(unsigned long *timer_value); +#define ARCH_HAS_READ_CURRENT_TIMER 1 #endif