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[PATCH] uml: s390 preparation, delay moved to arch

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s390 has fast read access to realtime clock (nanosecond resolution).  So it
makes sense to have an arch-specific implementation not only of __delay, but
__udelay also.

Signed-off-by: Bodo Stroesser <bstroesser@fujitsu-siemens.com>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Bodo Stroesser
2005-05-05 16:15:37 -07:00
committed by Linus Torvalds
parent 7d37c6d52f
commit 5fd861b682
6 changed files with 43 additions and 21 deletions
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18
arch/um/sys-i386/delay.c
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@@ -1,3 +1,6 @@
#include "linux/delay.h"
#include "asm/param.h"
void __delay(unsigned long time)
{
/* Stolen from the i386 __loop_delay */
@@ -12,3 +15,18 @@ void __delay(unsigned long time)
:"0" (time));
}
void __udelay(unsigned long usecs)
{
int i, n;
n = (loops_per_jiffy * HZ * usecs) / MILLION;
for(i=0;i<n;i++) ;
}
void __const_udelay(unsigned long usecs)
{
int i, n;
n = (loops_per_jiffy * HZ * usecs) / MILLION;
for(i=0;i<n;i++) ;
}