nmi_watchdog: Tell the world we're active

Because I was wondering why perf stat wasn't working as expected..

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Don Zickus <dzickus@redhat.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/kernel/nmi_watchdog.c b/kernel/nmi_watchdog.c
index 0a6f57f..a79d211 100644 (file)
--- a/kernel/nmi_watchdog.c
+++ b/kernel/nmi_watchdog.c
@@ -244,6 +244,8 @@ static int __init spawn_nmi_watchdog_task(void)
        if (nonmi_watchdog)
                return 0;
 
+       printk(KERN_INFO "NMI watchdog enabled, takes one hw-pmu counter.\n");
+
        err = cpu_callback(&cpu_nfb, CPU_UP_PREPARE, cpu);
        if (err == NOTIFY_BAD) {
                BUG();