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(parent: 1bca09f) | patch
s390/mm: speedup storage key initialization
authorHeiko Carstens <heiko.carstens@de.ibm.com>
Thu, 14 Mar 2013 15:46:05 +0000 (16:46 +0100)
committerMartin Schwidefsky <schwidefsky@de.ibm.com>
Wed, 17 Apr 2013 12:07:29 +0000 (14:07 +0200)
commitf7f8d7e51d3c31426ee006c38d5b0ae3c9b8733e
treede91adcab7bc1b86dfc40194595d827f0c1dc41btree | snapshot (tar.gz zip)
parent1bca09f7144450989e409c82ff0db83dddf489accommit | diff
s390/mm: speedup storage key initialization

Use sske with multiple block control to initialize storage keys within
a 1 MB frame at once.
It turned out that the sske with mb=1 is an order of magnitude faster
than pfmf. This is only an issue for very large systems (several 100GB)
where storage key initialization could last more than a minute.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
arch/s390/mm/pageattr.c diff | blob | blame | history