path: root/kernel
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authorjohn stultz <johnstul@us.ibm.com>2007-04-04 19:08:24 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-04-04 21:12:47 -0700
commit98de9e3ba23422b5c45b91c93aec1cb1e17514dc (patch)
tree4a8e05e6d684efd2e293b552270941732d7cb7ef /kernel
parent7f42d3b8a72ab585f3166a269276c8cca12088af (diff)
[PATCH] fix jiffies clocksource inittime
In debugging a problem w/ the -rt tree, I noticed that on systems that mark the tsc as unstable before it is registered, the TSC would still be selected and used for a short period of time. Digging in it looks to be a result of the mix of the clocksource list changes and my clocksource initialization changes. With the -rt tree, using a bad TSC, even for a short period of time can results in a hang at boot. I was not able to reproduce this hang w/ mainline, but I'm not completely certain that someone won't trip on it. This patch resolves the issue by initializing the jiffies clocksource earlier so a bad TSC won't get selected just because nothing else is yet registered. Signed-off-by: John Stultz <johnstul@us.ibm.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel')
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/time/jiffies.c b/kernel/time/jiffies.c
index 3be8da8fed7e..4c256fdb8875 100644
--- a/kernel/time/jiffies.c
+++ b/kernel/time/jiffies.c
@@ -69,4 +69,4 @@ static int __init init_jiffies_clocksource(void)
return clocksource_register(&clocksource_jiffies);