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After moving the the include files there were a few clean-ups: 1) Some files used #include <asm-ia64/xyz.h>, changed to <asm/xyz.h> 2) Some comments alerted maintainers to look at various header files to make matching updates if certain code were to be changed. Updated these comments to use the new include paths. 3) Some header files mentioned their own names in initial comments. Just deleted these self references. Signed-off-by: Tony Luck <tony.luck@intel.com>
43 lines
1.3 KiB
C
43 lines
1.3 KiB
C
#ifndef _ASM_IA64_TIMEX_H
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#define _ASM_IA64_TIMEX_H
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/*
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* Copyright (C) 1998-2001, 2003 Hewlett-Packard Co
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* David Mosberger-Tang <davidm@hpl.hp.com>
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*/
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/*
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* 2001/01/18 davidm Removed CLOCK_TICK_RATE. It makes no sense on IA-64.
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* Also removed cacheflush_time as it's entirely unused.
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*/
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#include <asm/intrinsics.h>
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#include <asm/processor.h>
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typedef unsigned long cycles_t;
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extern void (*ia64_udelay)(unsigned long usecs);
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/*
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* For performance reasons, we don't want to define CLOCK_TICK_TRATE as
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* local_cpu_data->itc_rate. Fortunately, we don't have to, either: according to George
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* Anzinger, 1/CLOCK_TICK_RATE is taken as the resolution of the timer clock. The time
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* calculation assumes that you will use enough of these so that your tick size <= 1/HZ.
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* If the calculation shows that your CLOCK_TICK_RATE can not supply exactly 1/HZ ticks,
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* the actual value is calculated and used to update the wall clock each jiffie. Setting
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* the CLOCK_TICK_RATE to x*HZ insures that the calculation will find no errors. Hence we
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* pick a multiple of HZ which gives us a (totally virtual) CLOCK_TICK_RATE of about
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* 100MHz.
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*/
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#define CLOCK_TICK_RATE (HZ * 100000UL)
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static inline cycles_t
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get_cycles (void)
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{
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cycles_t ret;
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ret = ia64_getreg(_IA64_REG_AR_ITC);
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return ret;
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}
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#endif /* _ASM_IA64_TIMEX_H */
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