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authorYinghai Lu <yhlu.kernel@gmail.com>2008-08-19 20:50:00 -0700
committerIngo Molnar <mingo@elte.hu>2008-10-16 16:52:07 +0200
commitd60458b224d6b997a582a05cb8c4b9bed9e17a1d (patch)
tree122710312c443069cb8e25a27032f09572550c45 /kernel/irq
parent5aeecaf4908499b1fd006d313ccbacde6a6bac43 (diff)
irq: make irq_desc to use dyn_array
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/irq')
-rw-r--r--kernel/irq/handle.c31
1 files changed, 31 insertions, 0 deletions
diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c
index e9d022cf593e..e94eeca09ea9 100644
--- a/kernel/irq/handle.c
+++ b/kernel/irq/handle.c
@@ -48,6 +48,36 @@ handle_bad_irq(unsigned int irq, struct irq_desc *desc)
* Controller mappings for all interrupt sources:
*/
int nr_irqs = NR_IRQS;
+
+#ifdef CONFIG_HAVE_DYN_ARRAY
+static struct irq_desc irq_desc_init __initdata = {
+ .status = IRQ_DISABLED,
+ .chip = &no_irq_chip,
+ .handle_irq = handle_bad_irq,
+ .depth = 1,
+ .lock = __SPIN_LOCK_UNLOCKED(irq_desc_init.lock),
+#ifdef CONFIG_SMP
+ .affinity = CPU_MASK_ALL
+#endif
+};
+
+static void __init init_work(void *data)
+{
+ struct dyn_array *da = data;
+ int i;
+ struct irq_desc *desc;
+
+ desc = *da->name;
+
+ for (i = 0; i < *da->nr; i++)
+ memcpy(&desc[i], &irq_desc_init, sizeof(struct irq_desc));
+}
+
+struct irq_desc *irq_desc;
+DEFINE_DYN_ARRAY(irq_desc, sizeof(struct irq_desc), nr_irqs, PAGE_SIZE, init_work);
+
+#else
+
struct irq_desc irq_desc[NR_IRQS] __cacheline_aligned_in_smp = {
[0 ... NR_IRQS-1] = {
.status = IRQ_DISABLED,
@@ -60,6 +90,7 @@ struct irq_desc irq_desc[NR_IRQS] __cacheline_aligned_in_smp = {
#endif
}
};
+#endif
/*
* What should we do if we get a hw irq event on an illegal vector?