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.
Signed-off-by: Jan Beulich <[email protected]>
arch/i386/kernel/irq.c | 18 ++++++++++++++----
arch/x86_64/kernel/irq.c | 18 ++++++++++++++----
2 files changed, 28 insertions(+), 8 deletions(-)
--- linux-2.6.23-rc6/arch/i386/kernel/irq.c 2007-09-14 17:38:46.000000000 +0200
+++ 2.6.23-rc6-x86-irq-stats/arch/i386/kernel/irq.c 2007-09-17 15:16:59.000000000 +0200
@@ -259,9 +259,17 @@ int show_interrupts(struct seq_file *p,
}
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
@@ -272,10 +280,12 @@ int show_interrupts(struct seq_file *p,
#endif
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:
--- linux-2.6.23-rc6/arch/x86_64/kernel/irq.c 2007-07-09 01:32:17.000000000 +0200
+++ 2.6.23-rc6-x86-irq-stats/arch/x86_64/kernel/irq.c 2007-09-17 16:42:48.000000000 +0200
@@ -64,9 +64,17 @@ int show_interrupts(struct seq_file *p,
}
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
@@ -78,9 +86,11 @@ int show_interrupts(struct seq_file *p,
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);
-
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