From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Tue, 3 Dec 2013 09:06:29 +0000 (+0100)
Subject: s390/smp: only send external call ipi if needed
X-Git-Tag: v3.14-rc1~184^2~38
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dea24190fbfb340dea5224e32161955514bef31b;p=pandora-kernel.git

s390/smp: only send external call ipi if needed

If the per cpu ec_mask bit of the receiving cpu is already set there is
no need to send an ipi, since a different cpu has already sent an ipi
and the receiving cpu has not yet executed the external call ipi handler.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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