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authorYinghai Lu <yhlu.kernel@gmail.com>2008-08-19 20:50:11 -0700
committerIngo Molnar <mingo@elte.hu>2008-10-16 16:52:33 +0200
commit2c6927a38f65b53b62f86158fba29a068c4e8b6a (patch)
tree4f23cf5689c8fbaed771219b4afd3f785d8048bc /arch/x86/kernel/irq_64.c
parent9059d8fa4a3a9153da53da890039f7f956cc9d19 (diff)
irq: replace loop with nr_irqs with for_each_irq_desc
There are a handful of loops that go from 0 to nr_irqs and use get_irq_desc() on them. These would allocate all the irq_desc entries, regardless of the need for them. Use the smarter for_each_irq_desc() iterator that will only iterate over the present ones. v2: make sure arch without GENERIC_HARDIRQS work too Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/irq_64.c')
-rw-r--r--arch/x86/kernel/irq_64.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/arch/x86/kernel/irq_64.c b/arch/x86/kernel/irq_64.c
index 4a0a4eb44dcb..b3cf55e325f5 100644
--- a/arch/x86/kernel/irq_64.c
+++ b/arch/x86/kernel/irq_64.c
@@ -224,17 +224,16 @@ void fixup_irqs(cpumask_t map)
{
unsigned int irq;
static int warned;
+ struct irq_desc *desc;
- for (irq = 0; irq < nr_irqs; irq++) {
+ for_each_irq_desc(irq, desc) {
cpumask_t mask;
int break_affinity = 0;
int set_affinity = 1;
- struct irq_desc *desc;
if (irq == 2)
continue;
- desc = irq_to_desc(irq);
/* interrupt's are disabled at this point */
spin_lock(&desc->lock);