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| author | Jeff Dike <jdike@addtoit.com> | 2005-05-20 13:59:08 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-05-20 15:48:17 -0700 |
| commit | 060e352236ece3325a684c72817fbacdac597574 (patch) | |
| tree | 32d573bfa99e31a5318eda247246261fdd13cd3e /arch/um/sys-i386/delay.c | |
| parent | 13479d52c7a61a18900d7f36730b7d3b43723d97 (diff) | |
| download | op-kernel-dev-060e352236ece3325a684c72817fbacdac597574.zip op-kernel-dev-060e352236ece3325a684c72817fbacdac597574.tar.gz | |
[PATCH] uml: Delay loop cleanups
This patch cleans up the delay implementations a bit, makes the loops
unoptimizable, and exports __udelay and __const_udelay.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/um/sys-i386/delay.c')
| -rw-r--r-- | arch/um/sys-i386/delay.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/arch/um/sys-i386/delay.c b/arch/um/sys-i386/delay.c index e9892ee..2c11b97 100644 --- a/arch/um/sys-i386/delay.c +++ b/arch/um/sys-i386/delay.c @@ -1,5 +1,7 @@ -#include "linux/delay.h" -#include "asm/param.h" +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/delay.h> +#include <asm/param.h> void __delay(unsigned long time) { @@ -20,13 +22,19 @@ void __udelay(unsigned long usecs) int i, n; n = (loops_per_jiffy * HZ * usecs) / MILLION; - for(i=0;i<n;i++) ; + for(i=0;i<n;i++) + cpu_relax(); } +EXPORT_SYMBOL(__udelay); + void __const_udelay(unsigned long usecs) { int i, n; n = (loops_per_jiffy * HZ * usecs) / MILLION; - for(i=0;i<n;i++) ; + for(i=0;i<n;i++) + cpu_relax(); } + +EXPORT_SYMBOL(__const_udelay); |
