From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: Tue, 29 Mar 2011 03:51:10 +0000 (+1100)
Subject: powerpc: Make decrementer interrupt robust against offlined CPUs
X-Git-Tag: v2.6.39-rc2~31^2~18
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=963e5d3b76d657f1ebcf3561446d2ba1872bbfa2;p=pandora-kernel.git

powerpc: Make decrementer interrupt robust against offlined CPUs

With some implementations, it is possible that a timer interrupt
occurs every few seconds on an offline CPU. In this case, just
re-arm the decrementer and return immediately

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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