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authorSuresh Siddha <suresh.b.siddha@intel.com>2008-07-10 11:16:45 -0700
committerIngo Molnar <mingo@elte.hu>2008-07-12 08:44:55 +0200
commit72b1e22dfcad1daca6906148fd956ffe404bb0bc (patch)
tree9ca9c198c7bd592528c322002bada84bc3e9d84d /kernel
parentb6fcb33ad6c05f152a672f7c96c1fab006527b80 (diff)
downloadop-kernel-dev-72b1e22dfcad1daca6906148fd956ffe404bb0bc.zip
op-kernel-dev-72b1e22dfcad1daca6906148fd956ffe404bb0bc.tar.gz
x64, x2apic/intr-remap: generic irq migration support from process context
Generic infrastructure for migrating the irq from the process context in the presence of CONFIG_GENERIC_PENDING_IRQ. This will be used later for migrating irq in the presence of interrupt-remapping. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: akpm@linux-foundation.org Cc: arjan@linux.intel.com Cc: andi@firstfloor.org Cc: ebiederm@xmission.com Cc: jbarnes@virtuousgeek.org Cc: steiner@sgi.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/irq/manage.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 46d6611..628b557 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -87,7 +87,14 @@ int irq_set_affinity(unsigned int irq, cpumask_t cpumask)
set_balance_irq_affinity(irq, cpumask);
#ifdef CONFIG_GENERIC_PENDING_IRQ
- set_pending_irq(irq, cpumask);
+ if (desc->status & IRQ_MOVE_PCNTXT) {
+ unsigned long flags;
+
+ spin_lock_irqsave(&desc->lock, flags);
+ desc->chip->set_affinity(irq, cpumask);
+ spin_unlock_irqrestore(&desc->lock, flags);
+ } else
+ set_pending_irq(irq, cpumask);
#else
desc->affinity = cpumask;
desc->chip->set_affinity(irq, cpumask);
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