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authorYinghai Lu <yhlu.kernel@gmail.com>2008-08-19 20:50:05 -0700
committerIngo Molnar <mingo@elte.hu>2008-10-16 16:52:29 +0200
commit08678b0841267c1d00d771fe01548d86043d065e (patch)
tree7debb21f9e9a768ced43077f7376797a0c46f8c0 /kernel/irq/migration.c
parentbfea1238beac9d306eeac081c67de5ca6aec4c7a (diff)
downloadtalos-obmc-linux-08678b0841267c1d00d771fe01548d86043d065e.tar.gz
talos-obmc-linux-08678b0841267c1d00d771fe01548d86043d065e.zip
generic: sparse irqs: use irq_desc() together with dyn_array, instead of irq_desc[]
add CONFIG_HAVE_SPARSE_IRQ to for use condensed array. Get rid of irq_desc[] array assumptions. Preallocate 32 irq_desc, and irq_desc() will try to get more. ( No change in functionality is expected anywhere, except the odd build failure where we missed a code site or where a crossing commit itroduces new irq_desc[] usage. ) v2: according to Eric, change get_irq_desc() to irq_desc() Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/irq/migration.c')
-rw-r--r--kernel/irq/migration.c14
1 files changed, 7 insertions, 7 deletions
diff --git a/kernel/irq/migration.c b/kernel/irq/migration.c
index 77b7acc875c5..90b920d3f52b 100644
--- a/kernel/irq/migration.c
+++ b/kernel/irq/migration.c
@@ -3,18 +3,18 @@
void set_pending_irq(unsigned int irq, cpumask_t mask)
{
- struct irq_desc *desc = irq_desc + irq;
+ struct irq_desc *desc = irq_to_desc(irq);
unsigned long flags;
spin_lock_irqsave(&desc->lock, flags);
desc->status |= IRQ_MOVE_PENDING;
- irq_desc[irq].pending_mask = mask;
+ desc->pending_mask = mask;
spin_unlock_irqrestore(&desc->lock, flags);
}
void move_masked_irq(int irq)
{
- struct irq_desc *desc = irq_desc + irq;
+ struct irq_desc *desc = irq_to_desc(irq);
cpumask_t tmp;
if (likely(!(desc->status & IRQ_MOVE_PENDING)))
@@ -30,7 +30,7 @@ void move_masked_irq(int irq)
desc->status &= ~IRQ_MOVE_PENDING;
- if (unlikely(cpus_empty(irq_desc[irq].pending_mask)))
+ if (unlikely(cpus_empty(desc->pending_mask)))
return;
if (!desc->chip->set_affinity)
@@ -38,7 +38,7 @@ void move_masked_irq(int irq)
assert_spin_locked(&desc->lock);
- cpus_and(tmp, irq_desc[irq].pending_mask, cpu_online_map);
+ cpus_and(tmp, desc->pending_mask, cpu_online_map);
/*
* If there was a valid mask to work with, please
@@ -55,12 +55,12 @@ void move_masked_irq(int irq)
if (likely(!cpus_empty(tmp))) {
desc->chip->set_affinity(irq,tmp);
}
- cpus_clear(irq_desc[irq].pending_mask);
+ cpus_clear(desc->pending_mask);
}
void move_native_irq(int irq)
{
- struct irq_desc *desc = irq_desc + irq;
+ struct irq_desc *desc = irq_to_desc(irq);
if (likely(!(desc->status & IRQ_MOVE_PENDING)))
return;
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