From: john stultz Date: Thu, 5 Apr 2007 02:08:24 +0000 (-0700) Subject: [PATCH] fix jiffies clocksource inittime X-Git-Tag: v2.6.21-rc6~6 X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=98de9e3ba23422b5c45b91c93aec1cb1e17514dc;p=linux-2.6-omap-h63xx.git [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 Acked-by: Thomas Gleixner Cc: Ingo Molnar Cc: Andi Kleen Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/kernel/time/jiffies.c b/kernel/time/jiffies.c index 3be8da8fed7..4c256fdb887 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); } -module_init(init_jiffies_clocksource); +core_initcall(init_jiffies_clocksource);