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authorTony Luck <tony.luck@intel.com>2008-08-01 13:13:32 -0400
committerTony Luck <tony.luck@intel.com>2008-08-01 13:21:21 -0400
commit7f30491ccd28627742e37899453ae20e3da8e18f (patch)
tree7291c0a26ed3a31acf9542857af3981d278f5de8 /arch/ia64/include/asm/timex.h
parent94ad374a0751f40d25e22e036c37f7263569d24c (diff)
[IA64] Move include/asm-ia64 to arch/ia64/include/asm
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>
Diffstat (limited to 'arch/ia64/include/asm/timex.h')
-rw-r--r--arch/ia64/include/asm/timex.h42
1 files changed, 42 insertions, 0 deletions
diff --git a/arch/ia64/include/asm/timex.h b/arch/ia64/include/asm/timex.h
new file mode 100644
index 000000000000..05a6baf8a472
--- /dev/null
+++ b/arch/ia64/include/asm/timex.h
@@ -0,0 +1,42 @@
1#ifndef _ASM_IA64_TIMEX_H
2#define _ASM_IA64_TIMEX_H
3
4/*
5 * Copyright (C) 1998-2001, 2003 Hewlett-Packard Co
6 * David Mosberger-Tang <davidm@hpl.hp.com>
7 */
8/*
9 * 2001/01/18 davidm Removed CLOCK_TICK_RATE. It makes no sense on IA-64.
10 * Also removed cacheflush_time as it's entirely unused.
11 */
12
13#include <asm/intrinsics.h>
14#include <asm/processor.h>
15
16typedef unsigned long cycles_t;
17
18extern void (*ia64_udelay)(unsigned long usecs);
19
20/*
21 * For performance reasons, we don't want to define CLOCK_TICK_TRATE as
22 * local_cpu_data->itc_rate. Fortunately, we don't have to, either: according to George
23 * Anzinger, 1/CLOCK_TICK_RATE is taken as the resolution of the timer clock. The time
24 * calculation assumes that you will use enough of these so that your tick size <= 1/HZ.
25 * If the calculation shows that your CLOCK_TICK_RATE can not supply exactly 1/HZ ticks,
26 * the actual value is calculated and used to update the wall clock each jiffie. Setting
27 * the CLOCK_TICK_RATE to x*HZ insures that the calculation will find no errors. Hence we
28 * pick a multiple of HZ which gives us a (totally virtual) CLOCK_TICK_RATE of about
29 * 100MHz.
30 */
31#define CLOCK_TICK_RATE (HZ * 100000UL)
32
33static inline cycles_t
34get_cycles (void)
35{
36 cycles_t ret;
37
38 ret = ia64_getreg(_IA64_REG_AR_ITC);
39 return ret;
40}
41
42#endif /* _ASM_IA64_TIMEX_H */