diff options
| author | Christoph Lameter <christoph@lameter.com> | 2005-06-23 03:08:25 -0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-06-23 12:45:10 -0400 |
| commit | 59121003721a8fad11ee72e646fd9d3076b5679c (patch) | |
| tree | c9279c1b74cce81a9dbaf1e7fd038cd55caf26f2 /include/asm-i386 | |
| parent | 799d19f6ec5ca2102c61122f5219a17f1c4e961a (diff) | |
[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-i386')
| -rw-r--r-- | include/asm-i386/param.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/include/asm-i386/param.h b/include/asm-i386/param.h index b6440526e42a..fa02e67ea86b 100644 --- a/include/asm-i386/param.h +++ b/include/asm-i386/param.h | |||
| @@ -1,8 +1,10 @@ | |||
| 1 | #include <linux/config.h> | ||
| 2 | |||
| 1 | #ifndef _ASMi386_PARAM_H | 3 | #ifndef _ASMi386_PARAM_H |
| 2 | #define _ASMi386_PARAM_H | 4 | #define _ASMi386_PARAM_H |
| 3 | 5 | ||
| 4 | #ifdef __KERNEL__ | 6 | #ifdef __KERNEL__ |
| 5 | # define HZ 1000 /* Internal kernel timer frequency */ | 7 | # define HZ CONFIG_HZ /* Internal kernel timer frequency */ |
| 6 | # define USER_HZ 100 /* .. some user interfaces are in "ticks" */ | 8 | # define USER_HZ 100 /* .. some user interfaces are in "ticks" */ |
| 7 | # define CLOCKS_PER_SEC (USER_HZ) /* like times() */ | 9 | # define CLOCKS_PER_SEC (USER_HZ) /* like times() */ |
| 8 | #endif | 10 | #endif |