From: Peter Zijlstra <a.p.zijlstra@chello.nl>
Date: Wed, 13 May 2009 06:12:51 +0000 (+0200)
Subject: perf_counter: fix print debug irq disable
X-Git-Tag: v2.6.31-rc1~383^2~283
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5bb9efe33ea4001a17ab98186a40a134a3061d67;p=pandora-kernel.git

perf_counter: fix print debug irq disable

inconsistent {IN-HARDIRQ-W} -> {HARDIRQ-ON-W} usage.
bash/15802 [HC0[0]:SC0[0]:HE1:SE1] takes:
 (sysrq_key_table_lock){?.....},

Don't unconditionally enable interrupts in the perf_counter_print_debug()
path.

[ Impact: fix potential deadlock pointed out by lockdep ]

LKML-Reference: <new-submission>
Reported-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
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