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Commit b07c9015 authored by Martin Schwidefsky's avatar Martin Schwidefsky Committed by Heiko Carstens
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[S390] hwsampler: allow cpu hotplug 



The hardware sample cpu hotplug notifier always returns NOTIFY_BAD.
That will prevent cpu hotplug if the machine is enabled for hardware
sampling even if it is not used. Fix the cpu hotplug notifier and
allow cpu hotplug if hardware sampling is unused.

Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
parent 7683f744

arch/s390/oprofile/hwsampler.c

+1 −1
Original line number Diff line number Diff line
@@ -580,7 +580,7 @@ static int hws_cpu_callback(struct notifier_block *nfb, 
{

	/* We do not have sampler space available for all possible CPUs.

	   All CPUs should be online when hw sampling is activated. */

	return NOTIFY_BAD;

	return (hws_state <= HWS_DEALLOCATED) ? NOTIFY_OK : NOTIFY_BAD;

}



static struct notifier_block hws_cpu_notifier = {