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authorChristoph Lameter <christoph@lameter.com>2005-06-23 00:08:25 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-06-23 09:45:10 -0700
commit59121003721a8fad11ee72e646fd9d3076b5679c (patch)
treec9279c1b74cce81a9dbaf1e7fd038cd55caf26f2 /include/asm-x86_64
parent799d19f6ec5ca2102c61122f5219a17f1c4e961a (diff)
downloadlinux-59121003721a8fad11ee72e646fd9d3076b5679c.tar.gz
[PATCH] i386: Selectable Frequency of the Timer Interrupt
Make the timer frequency selectable. The timer interrupt may cause bus and memory contention in large NUMA systems since the interrupt occurs on each processor HZ times per second. Signed-off-by: Christoph Lameter <christoph@lameter.com> Signed-off-by: Shai Fultheim <shai@scalex86.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-x86_64')
-rw-r--r--include/asm-x86_64/param.h6
1 files changed, 4 insertions, 2 deletions
diff --git a/include/asm-x86_64/param.h b/include/asm-x86_64/param.h
index b707f0568c9..40b11937180 100644
--- a/include/asm-x86_64/param.h
+++ b/include/asm-x86_64/param.h
@@ -1,9 +1,11 @@
+#include <linux/config.h>
+
#ifndef _ASMx86_64_PARAM_H
#define _ASMx86_64_PARAM_H
#ifdef __KERNEL__
-# define HZ 1000 /* Internal kernel timer frequency */
-# define USER_HZ 100 /* .. some user interfaces are in "ticks */
+# define HZ CONFIG_HZ /* Internal kernel timer frequency */
+# define USER_HZ 100 /* .. some user interfaces are in "ticks */
#define CLOCKS_PER_SEC (USER_HZ) /* like times() */
#endif