1 files changed, 84 insertions, 4 deletions

diff --git a/kernel/irq/proc.c b/kernel/irq/proc.c
index 6c8a2a9f8a7b..dd201bd35103 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 +357,83 @@ void init_irq_proc(void)
         }
 }
 
+#ifdef CONFIG_GENERIC_IRQ_SHOW
+
+int __weak arch_show_interrupts(struct seq_file *p, int prec)
+{
+        return 0;
+}
+
+#ifndef ACTUAL_NR_IRQS
+# define ACTUAL_NR_IRQS nr_irqs
+#endif
+
+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 > ACTUAL_NR_IRQS)
+                return 0;
+
+        if (i == ACTUAL_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));
+
+        if (desc->irq_data.chip) {
+                if (desc->irq_data.chip->irq_print_chip)
+                        desc->irq_data.chip->irq_print_chip(&desc->irq_data, p);
+                else if (desc->irq_data.chip->name)
+                        seq_printf(p, " %8s", desc->irq_data.chip->name);
+                else
+                        seq_printf(p, " %8s", "-");
+        } else {
+                seq_printf(p, " %8s", "None");
+        }
+#ifdef CONFIG_GENIRC_IRQ_SHOW_LEVEL
+        seq_printf(p, " %-8s", irqd_is_level_type(&desc->irq_data) ? "Level" : "Edge");
+#endif
+        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