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perf/x86: Fix PMU detection printout when no PMU is detected 

Ran into this cryptic PMU bootup log recently:

[    0.124047] Performance Events:
[    0.125000] smpboot: ...

Turns out we print this if no PMU is detected. Fall back to
the right condition so that the following is printed:

[    0.122381] Performance Events: no PMU driver, software events only.

Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Link: http://lkml.kernel.org/n/tip-u2fwaUffakjp0qkpRfqljgsn@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
hifive-unleashed-5.1
Ingo Molnar 2013-09-28 15:48:48 +02:00
parent c1bf21455d
commit 8a3da6c7d0
1 changed files with 1 additions and 1 deletions
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2
arch/x86/kernel/cpu/perf_event.c
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@ -1506,7 +1506,7 @@ static int __init init_hw_perf_events(void)
err = amd_pmu_init();
break;
default:
return 0;
err = -ENOTSUPP;
}
if (err != 0) {
pr_cont("no PMU driver, software events only.\n");