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(parent: d052054) | patch
s390/smp: only send external call ipi if needed
authorHeiko Carstens <heiko.carstens@de.ibm.com>
Tue, 3 Dec 2013 09:06:29 +0000 (10:06 +0100)
committerMartin Schwidefsky <schwidefsky@de.ibm.com>
Mon, 16 Dec 2013 13:37:43 +0000 (14:37 +0100)
commit6d393eb57cf3dc237f02094c892a92c7ecf22321
tree8d2ea60d07e9f6291f22ef78fa69c7726430087btree | snapshot
parentd0520549759b0685d271300680ab774613b8ea58commit | diff
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>
arch/s390/kernel/smp.c diff | blob | history
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