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Diffstat (limited to 'arch/x86/kernel/nmi.c')
-rw-r--r--arch/x86/kernel/nmi.c28
1 files changed, 19 insertions, 9 deletions
diff --git a/arch/x86/kernel/nmi.c b/arch/x86/kernel/nmi.c
index ac6d51222e7d..abb78a2cc4ad 100644
--- a/arch/x86/kernel/nmi.c
+++ b/arch/x86/kernel/nmi.c
@@ -114,6 +114,23 @@ static __init void nmi_cpu_busy(void *data)
}
#endif
+static void report_broken_nmi(int cpu, int *prev_nmi_count)
+{
+ printk(KERN_CONT "\n");
+
+ printk(KERN_WARNING
+ "WARNING: CPU#%d: NMI appears to be stuck (%d->%d)!\n",
+ cpu, prev_nmi_count[cpu], get_nmi_count(cpu));
+
+ printk(KERN_WARNING
+ "Please report this to bugzilla.kernel.org,\n");
+ printk(KERN_WARNING
+ "and attach the output of the 'dmesg' command.\n");
+
+ per_cpu(wd_enabled, cpu) = 0;
+ atomic_dec(&nmi_active);
+}
+
int __init check_nmi_watchdog(void)
{
unsigned int *prev_nmi_count;
@@ -141,15 +158,8 @@ int __init check_nmi_watchdog(void)
for_each_online_cpu(cpu) {
if (!per_cpu(wd_enabled, cpu))
continue;
- if (get_nmi_count(cpu) - prev_nmi_count[cpu] <= 5) {
- printk(KERN_WARNING "WARNING: CPU#%d: NMI "
- "appears to be stuck (%d->%d)!\n",
- cpu,
- prev_nmi_count[cpu],
- get_nmi_count(cpu));
- per_cpu(wd_enabled, cpu) = 0;
- atomic_dec(&nmi_active);
- }
+ if (get_nmi_count(cpu) - prev_nmi_count[cpu] <= 5)
+ report_broken_nmi(cpu, prev_nmi_count);
}
endflag = 1;
if (!atomic_read(&nmi_active)) {
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