perf_counter: fix print debug irq disable

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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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Peter Zijlstra 2009-05-13 08:12:51 +02:00 • committed by Ingo Molnar

parent e758a33d6f

commit 5bb9efe33e

1 changed files with 3 additions and 2 deletions

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arch/x86/kernel/cpu/perf_counter.c

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