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| author | john stultz <johnstul@us.ibm.com> | 2007-04-05 02:08:24 (GMT) |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-04-05 04:12:47 (GMT) |
| commit | 98de9e3ba23422b5c45b91c93aec1cb1e17514dc (patch) | |
| tree | 4a8e05e6d684efd2e293b552270941732d7cb7ef /mm/memory.c | |
| parent | 7f42d3b8a72ab585f3166a269276c8cca12088af (diff) | |
| download | linux-98de9e3ba23422b5c45b91c93aec1cb1e17514dc.tar.xz | |
[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 'mm/memory.c')
0 files changed, 0 insertions, 0 deletions