Commit-ID: b58d971da3433654787a88c40c6fca00f5bbaa04
Gitweb: http://git.kernel.org/tip/b58d971da3433654787a88c40c6fca00f5bbaa04
Author: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
AuthorDate: Sun, 23 Feb 2014 21:40:10 +0000
Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Tue, 4 Mar 2014 17:37:55 +0100
xtensa: Use irq_set_affinity instead of homebrewn code
There is no point in having an incomplete copy of irq_set_affinity()
for the hotplug irq migration code.
Use the core function instead and while at it switch to
for_each_active_irq()
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Chris Zankel <chris@xxxxxxxxxx>
Cc: xtensa <linux-xtensa@xxxxxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/20140223212736.664624945@xxxxxxxxxxxxx
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
arch/xtensa/kernel/irq.c | 22 +++-------------------
1 file changed, 3 insertions(+), 19 deletions(-)
diff --git a/arch/xtensa/kernel/irq.c b/arch/xtensa/kernel/irq.c
index 482868a..3eee94f 100644
--- a/arch/xtensa/kernel/irq.c
+++ b/arch/xtensa/kernel/irq.c
@@ -155,18 +155,6 @@ void __init init_IRQ(void)
}
#ifdef CONFIG_HOTPLUG_CPU
-static void route_irq(struct irq_data *data, unsigned int irq, unsigned int cpu)
-{
- struct irq_desc *desc = irq_to_desc(irq);
- struct irq_chip *chip = irq_data_get_irq_chip(data);
- unsigned long flags;
-
- raw_spin_lock_irqsave(&desc->lock, flags);
- if (chip->irq_set_affinity)
- chip->irq_set_affinity(data, cpumask_of(cpu), false);
- raw_spin_unlock_irqrestore(&desc->lock, flags);
-}
-
/*
* The CPU has been marked offline. Migrate IRQs off this CPU. If
* the affinity settings do not allow other CPUs, force them onto any
@@ -175,10 +163,9 @@ static void route_irq(struct irq_data *data, unsigned int irq, unsigned int cpu)
void migrate_irqs(void)
{
unsigned int i, cpu = smp_processor_id();
- struct irq_desc *desc;
- for_each_irq_desc(i, desc) {
- struct irq_data *data = irq_desc_get_irq_data(desc);
+ for_each_active_irq(i) {
+ struct irq_data *data = irq_get_irq_data(i);
unsigned int newcpu;
if (irqd_is_per_cpu(data))
@@ -194,11 +181,8 @@ void migrate_irqs(void)
i, cpu);
cpumask_setall(data->affinity);
- newcpu = cpumask_any_and(data->affinity,
- cpu_online_mask);
}
-
- route_irq(data, i, newcpu);
+ irq_set_affinity(i, data->affinity);
}
}
#endif /* CONFIG_HOTPLUG_CPU */
--
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