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Diffstat (limited to 'kernel/irq/proc.c')
-rw-r--r--kernel/irq/proc.c71
1 files changed, 67 insertions, 4 deletions
diff --git a/kernel/irq/proc.c b/kernel/irq/proc.c
index 6c8a2a9f8a7b..760248de109d 100644
--- a/kernel/irq/proc.c
+++ b/kernel/irq/proc.c
@@ -11,6 +11,7 @@
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/interrupt.h>
+#include <linux/kernel_stat.h>
#include "internals.h"
@@ -24,7 +25,7 @@ static int irq_affinity_proc_show(struct seq_file *m, void *v)
const struct cpumask *mask = desc->irq_data.affinity;
#ifdef CONFIG_GENERIC_PENDING_IRQ
- if (desc->status & IRQ_MOVE_PENDING)
+ if (irqd_is_setaffinity_pending(&desc->irq_data))
mask = desc->pending_mask;
#endif
seq_cpumask(m, mask);
@@ -65,8 +66,7 @@ static ssize_t irq_affinity_proc_write(struct file *file,
cpumask_var_t new_value;
int err;
- if (!irq_to_desc(irq)->irq_data.chip->irq_set_affinity || no_irq_affinity ||
- irq_balancing_disabled(irq))
+ if (!irq_can_set_affinity(irq) || no_irq_affinity)
return -EIO;
if (!alloc_cpumask_var(&new_value, GFP_KERNEL))
@@ -89,7 +89,7 @@ static ssize_t irq_affinity_proc_write(struct file *file,
if (!cpumask_intersects(new_value, cpu_online_mask)) {
/* Special case for empty set - allow the architecture
code to set default SMP affinity. */
- err = irq_select_affinity_usr(irq) ? -EINVAL : count;
+ err = irq_select_affinity_usr(irq, new_value) ? -EINVAL : count;
} else {
irq_set_affinity(irq, new_value);
err = count;
@@ -357,3 +357,66 @@ void init_irq_proc(void)
}
}
+#ifdef CONFIG_GENERIC_IRQ_SHOW
+
+int __weak arch_show_interrupts(struct seq_file *p, int prec)
+{
+ return 0;
+}
+
+int show_interrupts(struct seq_file *p, void *v)
+{
+ static int prec;
+
+ unsigned long flags, any_count = 0;
+ int i = *(loff_t *) v, j;
+ struct irqaction *action;
+ struct irq_desc *desc;
+
+ if (i > nr_irqs)
+ return 0;
+
+ if (i == nr_irqs)
+ return arch_show_interrupts(p, prec);
+
+ /* print header and calculate the width of the first column */
+ if (i == 0) {
+ for (prec = 3, j = 1000; prec < 10 && j <= nr_irqs; ++prec)
+ j *= 10;
+
+ seq_printf(p, "%*s", prec + 8, "");
+ for_each_online_cpu(j)
+ seq_printf(p, "CPU%-8d", j);
+ seq_putc(p, '\n');
+ }
+
+ desc = irq_to_desc(i);
+ if (!desc)
+ return 0;
+
+ raw_spin_lock_irqsave(&desc->lock, flags);
+ for_each_online_cpu(j)
+ any_count |= kstat_irqs_cpu(i, j);
+ action = desc->action;
+ if (!action && !any_count)
+ goto out;
+
+ seq_printf(p, "%*d: ", prec, i);
+ for_each_online_cpu(j)
+ seq_printf(p, "%10u ", kstat_irqs_cpu(i, j));
+ seq_printf(p, " %8s", desc->irq_data.chip->name);
+ if (desc->name)
+ seq_printf(p, "-%-8s", desc->name);
+
+ if (action) {
+ seq_printf(p, " %s", action->name);
+ while ((action = action->next) != NULL)
+ seq_printf(p, ", %s", action->name);
+ }
+
+ seq_putc(p, '\n');
+out:
+ raw_spin_unlock_irqrestore(&desc->lock, flags);
+ return 0;
+}
+#endif