x86: add the word 'WARNING' in check_nmi_watchdog() output

Our automated test suite looks for keywords like error, fail, warning in
the boot log.  In the case when the nmi watchdog is determined to be
stuck in check_nmi_watchdog(), none of those keywords are displayed.

This patch adds a keyword, "WARNING:", so it makes it easier to notice
when the nmi watchdog isn't working correctly. Also add a proper
KERN_WARNING mark to this printout.

Signed-off-by: Don Zickus <dzickus@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

2 files changed, 4 insertions, 2 deletions

diff --git a/arch/x86/kernel/nmi_32.c b/arch/x86/kernel/nmi_32.c
index f5cc47c60b13..80ca72e5ac29 100644
--- a/arch/x86/kernel/nmi_32.c
+++ b/arch/x86/kernel/nmi_32.c
@@ -106,7 +106,8 @@ static int __init check_nmi_watchdog(void)
                 if (!per_cpu(wd_enabled, cpu))
                         continue;
                 if (nmi_count(cpu) - prev_nmi_count[cpu] <= 5) {
-                        printk("CPU#%d: NMI appears to be stuck (%d->%d)!\n",
+                        printk(KERN_WARNING "WARNING: CPU#%d: NMI "
+                                "appears to be stuck (%d->%d)!\n",
                                 cpu,
                                 prev_nmi_count[cpu],
                                 nmi_count(cpu));
diff --git a/arch/x86/kernel/nmi_64.c b/arch/x86/kernel/nmi_64.c
index a576fd740062..4253c4e8849c 100644
--- a/arch/x86/kernel/nmi_64.c
+++ b/arch/x86/kernel/nmi_64.c
@@ -109,7 +109,8 @@ int __init check_nmi_watchdog (void)
                 if (!per_cpu(wd_enabled, cpu))
                         continue;
                 if (cpu_pda(cpu)->__nmi_count - counts[cpu] <= 5) {
-                        printk("CPU#%d: NMI appears to be stuck (%d->%d)!\n",
+                        printk(KERN_WARNING "WARNING: CPU#%d: NMI "
+                               "appears to be stuck (%d->%d)!\n",
                                cpu,
                                counts[cpu],
                                cpu_pda(cpu)->__nmi_count);