From: Martin Schwidefsky <schwidefsky@de.ibm.com>
Date: Mon, 7 Nov 2005 08:59:02 +0000 (-0800)
Subject: [PATCH] s390: stop_hz_timer vs. xtime updates
X-Git-Tag: v2.6.15-rc1~649
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1b44e98d7d0754bbcf0222baf179f5e2e3dbea7b;p=pandora-kernel.git

[PATCH] s390: stop_hz_timer vs. xtime updates

The calculation of the value return by next_timer_interrupt from jiffies to
jiffies_64 is racy against xtime updates.  We need to protect the calculation
with read_seqbegin/read_seqretry.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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