s390/barrier: make use of fast-bcr facility
authorHeiko Carstens <heiko.carstens@de.ibm.com>
Mon, 14 May 2012 10:41:54 +0000 (12:41 +0200)
committerMartin Schwidefsky <schwidefsky@de.ibm.com>
Wed, 16 May 2012 12:42:45 +0000 (14:42 +0200)
If the kernel gets compiled for at least z196, make use of
the fast-BCR facility.

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

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