x86: print message if nmi_watchdog=2 cannot be enabled



right now if there's no CPU support for nmi_watchdog=2 we'll just
refuse it silently.

print a useful warning.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

parent 4f14bdef

arch/x86/kernel/cpu/perfctr-watchdog.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -667,8 +667,10 @@ int lapic_watchdog_init(unsigned nmi_hz)
		{
		if (!wd_ops) {
		probe_nmi_watchdog();
		if (!wd_ops)
		if (!wd_ops) {
		printk(KERN_INFO "NMI watchdog: CPU not supported\n");
		return -1;
		}

		if (!wd_ops->reserve()) {
		printk(KERN_ERR