Make irq_*_affinity depend on CONFIG_GENERIC_HARDIRQS too.

[linux-2.6-omap-h63xx.git] / kernel / irq / manage.c

diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 540f6c49f3fa156b2bd0d61ad2c5090ea0e46013..618a64f1915a81334ddded9b6b6175e44a169880 100644 (file)
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -15,9 +15,16 @@
 
 #include "internals.h"
 
-#ifdef CONFIG_SMP
+#if defined(CONFIG_SMP) && defined(CONFIG_GENERIC_HARDIRQS)
+cpumask_var_t irq_default_affinity;
 
-cpumask_t irq_default_affinity = CPU_MASK_ALL;
+static int init_irq_default_affinity(void)
+{
+       alloc_cpumask_var(&irq_default_affinity, GFP_KERNEL);
+       cpumask_setall(irq_default_affinity);
+       return 0;
+}
+core_initcall(init_irq_default_affinity);
 
 /**
  *     synchronize_irq - wait for pending IRQ handlers (on other CPUs)
@@ -79,7 +86,7 @@ int irq_can_set_affinity(unsigned int irq)
  *     @cpumask:       cpumask
  *
  */
-int irq_set_affinity(unsigned int irq, cpumask_t cpumask)
+int irq_set_affinity(unsigned int irq, const struct cpumask *cpumask)
 {
        struct irq_desc *desc = irq_to_desc(irq);
        unsigned long flags;
@@ -91,14 +98,14 @@ int irq_set_affinity(unsigned int irq, cpumask_t cpumask)
 
 #ifdef CONFIG_GENERIC_PENDING_IRQ
        if (desc->status & IRQ_MOVE_PCNTXT || desc->status & IRQ_DISABLED) {
-               desc->affinity = cpumask;
+               cpumask_copy(&desc->affinity, cpumask);
                desc->chip->set_affinity(irq, cpumask);
        } else {
                desc->status |= IRQ_MOVE_PENDING;
-               desc->pending_mask = cpumask;
+               cpumask_copy(&desc->pending_mask, cpumask);
        }
 #else
-       desc->affinity = cpumask;
+       cpumask_copy(&desc->affinity, cpumask);
        desc->chip->set_affinity(irq, cpumask);
 #endif
        desc->status |= IRQ_AFFINITY_SET;
@@ -112,26 +119,24 @@ int irq_set_affinity(unsigned int irq, cpumask_t cpumask)
  */
 int do_irq_select_affinity(unsigned int irq, struct irq_desc *desc)
 {
-       cpumask_t mask;
-
        if (!irq_can_set_affinity(irq))
                return 0;
 
-       cpus_and(mask, cpu_online_map, irq_default_affinity);
-
        /*
         * Preserve an userspace affinity setup, but make sure that
         * one of the targets is online.
         */
        if (desc->status & (IRQ_AFFINITY_SET | IRQ_NO_BALANCING)) {
-               if (cpus_intersects(desc->affinity, cpu_online_map))
-                       mask = desc->affinity;
+               if (cpumask_any_and(&desc->affinity, cpu_online_mask)
+                   < nr_cpu_ids)
+                       goto set_affinity;
                else
                        desc->status &= ~IRQ_AFFINITY_SET;
        }
 
-       desc->affinity = mask;
-       desc->chip->set_affinity(irq, mask);
+       cpumask_and(&desc->affinity, cpu_online_mask, irq_default_affinity);
+set_affinity:
+       desc->chip->set_affinity(irq, &desc->affinity);
 
        return 0;
 }