From: Jiri Olsa <jolsa@redhat.com>
Date: Wed, 11 May 2011 11:06:13 +0000 (+0200)
Subject: kprobes, x86: Disable irqs during optimized callback
X-Git-Tag: v2.6.39~7^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9bbeacf52f66d165739a4bbe9c018d17493a74b5;p=pandora-kernel.git

kprobes, x86: Disable irqs during optimized callback

Disable irqs during optimized callback, so we dont miss any in-irq kprobes.

The following commands:

 # cd /debug/tracing/
 # echo "p mutex_unlock" >> kprobe_events
 # echo "p _raw_spin_lock" >> kprobe_events
 # echo "p smp_apic_timer_interrupt" >> ./kprobe_events
 # echo 1 > events/enable

Cause the optimized kprobes to be missed. None is missed
with the fix applied.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Link: http://lkml.kernel.org/r/20110511110613.GB2390@jolsa.brq.redhat.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

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