62 lines
1.8 KiB
Diff
62 lines
1.8 KiB
Diff
From a8bb19e5ba9a3a73fe6a761295b67b641a7bc9df Mon Sep 17 00:00:00 2001
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From: Jonas Gorski <jogo@openwrt.org>
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Date: Fri, 26 Apr 2013 12:06:03 +0200
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Subject: [PATCH 13/13] MIPS: BCM63XX: allow setting affinity for IPIC
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Add support for setting the SMP affinity for the IPIC IRQs.
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Signed-off-by: Jonas Gorski <jogo@openwrt.org>
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---
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arch/mips/bcm63xx/irq.c | 27 ++++++++++++++++++++++++++-
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1 file changed, 26 insertions(+), 1 deletion(-)
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--- a/arch/mips/bcm63xx/irq.c
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+++ b/arch/mips/bcm63xx/irq.c
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@@ -418,9 +418,14 @@ static void bcm63xx_internal_irq_mask(st
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static void bcm63xx_internal_irq_unmask(struct irq_data *d)
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{
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unsigned long flags;
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+ const struct cpumask *dest = cpu_online_mask;
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spin_lock_irqsave(&ipic_lock, flags);
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- internal_irq_unmask(d->irq - IRQ_INTERNAL_BASE, cpu_online_mask);
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+#ifdef CONFIG_SMP
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+ if (irqd_affinity_was_set(d))
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+ dest = d->affinity;
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+#endif
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+ internal_irq_unmask(d->irq - IRQ_INTERNAL_BASE, dest);
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spin_unlock_irqrestore(&ipic_lock, flags);
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}
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@@ -596,10 +601,30 @@ static int bcm63xx_external_irq_set_type
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return IRQ_SET_MASK_OK_NOCOPY;
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}
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+#ifdef CONFIG_SMP
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+static int bcm63xx_internal_set_affinity(struct irq_data *data,
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+ const struct cpumask *dest,
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+ bool force)
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+{
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+ unsigned int irq = data->irq - IRQ_INTERNAL_BASE;
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+ unsigned long flags;
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+
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+ spin_lock_irqsave(&ipic_lock, flags);
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+ if (!irqd_irq_disabled(data))
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+ internal_irq_unmask(irq, dest);
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+ spin_unlock_irqrestore(&ipic_lock, flags);
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+
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+ return 0;
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+}
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+#endif
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+
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static struct irq_chip bcm63xx_internal_irq_chip = {
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.name = "bcm63xx_ipic",
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.irq_mask = bcm63xx_internal_irq_mask,
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.irq_unmask = bcm63xx_internal_irq_unmask,
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+#ifdef CONFIG_SMP
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+ .irq_set_affinity = bcm63xx_internal_set_affinity,
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+#endif
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};
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static struct irq_chip bcm63xx_external_irq_chip = {
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