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(parent: 28f96c3) | patch
s390: optimize control register update
authorMartin Schwidefsky <schwidefsky@de.ibm.com>
Tue, 3 Dec 2013 13:57:18 +0000 (14:57 +0100)
committerMartin Schwidefsky <schwidefsky@de.ibm.com>
Thu, 12 Dec 2013 10:00:21 +0000 (11:00 +0100)
commitf5ceb896771a9f8ea57ac6e0b13224b737189aa4
treedfd1468247b2dadfdbd7e844f28fdfc72e9080eetree | snapshot
parent28f96c3ddf747f3945709067128237c9ee5ee706commit | diff
s390: optimize control register update

It is less expensive to update control registers 0 and 2 with two
individual stctg/lctlg instructions as with a single one that spans
control register 0, 1 and 2.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
arch/s390/kernel/ptrace.c diff | blob | history
Linux kernel for KaRo TX COM modules