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(parent: 4ba2815) | patch
s390/spinlock: disabled compare-and-delay by default
authorMartin Schwidefsky <schwidefsky@de.ibm.com>
Thu, 19 Feb 2015 16:53:16 +0000 (17:53 +0100)
committerMartin Schwidefsky <schwidefsky@de.ibm.com>
Thu, 19 Feb 2015 17:05:38 +0000 (18:05 +0100)
commit61b0b01686d482205db14987826e1a11dd17d65c
tree6231308c7dbff1ad58e66de14ff5872d61d3577dtree | snapshot (tar.gz zip)
parent4ba2815d3bf38d6a959d2d11b08cf862550dcfcccommit | diff
s390/spinlock: disabled compare-and-delay by default

Until we have hard performance data about the effects of CAD in the
spinlock loop disable the instruction by default.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
arch/s390/kernel/early.c diff | blob | blame | history