From 871480933a1c28f8a9fed4c4d34d06c439a7a422 Mon Sep 17 00:00:00 2001 From: Srikant Patnaik Date: Sun, 11 Jan 2015 12:28:04 +0530 Subject: Moved, renamed, and deleted files The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure. --- arch/ia64/include/asm/timex.h | 45 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 arch/ia64/include/asm/timex.h (limited to 'arch/ia64/include/asm/timex.h') diff --git a/arch/ia64/include/asm/timex.h b/arch/ia64/include/asm/timex.h new file mode 100644 index 00000000..86c7db86 --- /dev/null +++ b/arch/ia64/include/asm/timex.h @@ -0,0 +1,45 @@ +#ifndef _ASM_IA64_TIMEX_H +#define _ASM_IA64_TIMEX_H + +/* + * Copyright (C) 1998-2001, 2003 Hewlett-Packard Co + * David Mosberger-Tang + */ +/* + * 2001/01/18 davidm Removed CLOCK_TICK_RATE. It makes no sense on IA-64. + * Also removed cacheflush_time as it's entirely unused. + */ + +#include +#include + +typedef unsigned long cycles_t; + +extern void (*ia64_udelay)(unsigned long usecs); + +/* + * For performance reasons, we don't want to define CLOCK_TICK_TRATE as + * local_cpu_data->itc_rate. Fortunately, we don't have to, either: according to George + * Anzinger, 1/CLOCK_TICK_RATE is taken as the resolution of the timer clock. The time + * calculation assumes that you will use enough of these so that your tick size <= 1/HZ. + * If the calculation shows that your CLOCK_TICK_RATE can not supply exactly 1/HZ ticks, + * the actual value is calculated and used to update the wall clock each jiffie. Setting + * the CLOCK_TICK_RATE to x*HZ insures that the calculation will find no errors. Hence we + * pick a multiple of HZ which gives us a (totally virtual) CLOCK_TICK_RATE of about + * 100MHz. + */ +#define CLOCK_TICK_RATE (HZ * 100000UL) + +static inline cycles_t +get_cycles (void) +{ + cycles_t ret; + + ret = ia64_getreg(_IA64_REG_AR_ITC); + return ret; +} + +extern void ia64_cpu_local_tick (void); +extern unsigned long long ia64_native_sched_clock (void); + +#endif /* _ASM_IA64_TIMEX_H */ -- cgit