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authorJan Beulich <jbeulich@novell.com>2007-10-17 18:04:40 +0200
committerThomas Gleixner <tglx@inhelltoy.tec.linutronix.de>2007-10-17 20:16:54 +0200
commit072f5d82b58cba760191393a6a99fd1123c76e67 (patch)
tree8b0bd815aed4a466d7747ddacc4105e13316f4f4 /arch/x86/kernel/irq_64.c
parent38e760a1335ffaca5a08624a9aed6fe2055c2c98 (diff)
x86: also show non-zero IRQ counts for vectors that currently don't have a handler
It doesn't seem to make sense to hide these, even if their counts can't change at the point in time they're being displayed. [ tglx: arch/x86 adaptation ] Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/kernel/irq_64.c')
-rw-r--r--arch/x86/kernel/irq_64.c18
1 files changed, 14 insertions, 4 deletions
diff --git a/arch/x86/kernel/irq_64.c b/arch/x86/kernel/irq_64.c
index 3881189df8e..6b5c730d67b 100644
--- a/arch/x86/kernel/irq_64.c
+++ b/arch/x86/kernel/irq_64.c
@@ -62,9 +62,17 @@ int show_interrupts(struct seq_file *p, void *v)
}
if (i < NR_IRQS) {
+ unsigned any_count = 0;
+
spin_lock_irqsave(&irq_desc[i].lock, flags);
+#ifndef CONFIG_SMP
+ any_count = kstat_irqs(i);
+#else
+ for_each_online_cpu(j)
+ any_count |= kstat_cpu(j).irqs[i];
+#endif
action = irq_desc[i].action;
- if (!action)
+ if (!action && !any_count)
goto skip;
seq_printf(p, "%3d: ",i);
#ifndef CONFIG_SMP
@@ -76,9 +84,11 @@ int show_interrupts(struct seq_file *p, void *v)
seq_printf(p, " %8s", irq_desc[i].chip->name);
seq_printf(p, "-%-8s", irq_desc[i].name);
- seq_printf(p, " %s", action->name);
- for (action=action->next; action; action = action->next)
- seq_printf(p, ", %s", action->name);
+ if (action) {
+ seq_printf(p, " %s", action->name);
+ while ((action = action->next) != NULL)
+ seq_printf(p, ", %s", action->name);
+ }
seq_putc(p, '\n');
skip:
spin_unlock_irqrestore(&irq_desc[i].lock, flags);