[S390] Improve notify_page_fault implementation.

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notify_page_fault does a preempt_disable/preempt_enable for each
fault generated by a kernel access to user space. If kprobes
is not active that is unnecessary since the interrupts are not
reenabled yet. To play safe repeat the kprobe_running check after
preempt_disable().

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

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Martin Schwidefsky 2009-12-07 12:51:44 +01:00 • committed by Martin Schwidefsky

parent b11b533427

commit 7ecb344ae8

1 changed files with 4 additions and 10 deletions

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arch/s390/mm/fault.c

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