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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>
This commit is contained in:
Ingo Molnar 2008-03-27 23:39:42 +01:00
parent 4f14bdef41
commit 9c9b81f773
1 changed files with 3 additions and 1 deletions
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4
arch/x86/kernel/cpu/perfctr-watchdog.c
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@ -667,8 +667,10 @@ int lapic_watchdog_init(unsigned nmi_hz)
{ {
if (!wd_ops) { if (!wd_ops) {
probe_nmi_watchdog(); probe_nmi_watchdog();
if (!wd_ops) if (!wd_ops) {
printk(KERN_INFO "NMI watchdog: CPU not supported\n");
return -1; return -1;
}
if (!wd_ops->reserve()) { if (!wd_ops->reserve()) {
printk(KERN_ERR printk(KERN_ERR