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DateWed, 2 Apr 2008 13:20:07 +0200 (CEST)
FromRoman Zippel <>
SubjectRe: [PATCH 1/2] Keep track of original clocksource frequency
Hi,

On Tue, 18 Mar 2008, john stultz wrote:

> @@ -63,6 +64,7 @@ struct clocksource {
> cycle_t (*read)(void);
> cycle_t mask;
> u32 mult;
> + s32 mult_orig;
> u32 shift;
> unsigned long flags;
> cycle_t (*vread)(void);

This is wrong, with HZ=100 the jiffies clock multiplier suddenly becomes
negative and later the raw interval underflows.

bye, Roman


Signed-off-by: Roman Zippel <zippel@linux-m68k.org>

---
include/linux/clocksource.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Index: linux-2.6/include/linux/clocksource.h
===================================================================
--- linux-2.6.orig/include/linux/clocksource.h
+++ linux-2.6/include/linux/clocksource.h
@@ -64,7 +64,7 @@ struct clocksource {
cycle_t (*read)(void);
cycle_t mask;
u32 mult;
- s32 mult_orig;
+ u32 mult_orig;
u32 shift;
unsigned long flags;
cycle_t (*vread)(void);

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