From: Miao Xie <miaox@cn.fujitsu.com>
Date: Wed, 20 Aug 2008 23:37:38 +0000 (-0700)
Subject: nohz: fix wrong event handler after online an offlined cpu
X-Git-Tag: v2.6.27-rc5~49^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3c4fbe5e01d7e5309be5045e7ae0db20a049e6dc;p=pandora-kernel.git

nohz: fix wrong event handler after online an offlined cpu

On the tickless system(CONFIG_NO_HZ=y and CONFIG_HIGH_RES_TIMERS=n), after
I made an offlined cpu online, I found this cpu's event handler was
tick_handle_periodic, not tick_nohz_handler.

After debuging, I found this bug was caused by the wrong tick mode.  the
tick mode is not changed to NOHZ_MODE_INACTIVE when the cpu is offline.

This patch fixes this bug.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

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