diff options
Diffstat (limited to 'target/linux/brcm63xx/patches-3.8/322-MIPS-BCM63XX-allow-setting-affinity-for-IPIC.patch')
| -rw-r--r-- | target/linux/brcm63xx/patches-3.8/322-MIPS-BCM63XX-allow-setting-affinity-for-IPIC.patch | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/target/linux/brcm63xx/patches-3.8/322-MIPS-BCM63XX-allow-setting-affinity-for-IPIC.patch b/target/linux/brcm63xx/patches-3.8/322-MIPS-BCM63XX-allow-setting-affinity-for-IPIC.patch new file mode 100644 index 0000000000..d976903d2f --- /dev/null +++ b/target/linux/brcm63xx/patches-3.8/322-MIPS-BCM63XX-allow-setting-affinity-for-IPIC.patch @@ -0,0 +1,61 @@ +From a8bb19e5ba9a3a73fe6a761295b67b641a7bc9df Mon Sep 17 00:00:00 2001 +From: Jonas Gorski <jogo@openwrt.org> +Date: Fri, 26 Apr 2013 12:06:03 +0200 +Subject: [PATCH 13/13] MIPS: BCM63XX: allow setting affinity for IPIC + +Add support for setting the SMP affinity for the IPIC IRQs. + +Signed-off-by: Jonas Gorski <jogo@openwrt.org> +--- + arch/mips/bcm63xx/irq.c | 27 ++++++++++++++++++++++++++- + 1 file changed, 26 insertions(+), 1 deletion(-) + +--- a/arch/mips/bcm63xx/irq.c ++++ b/arch/mips/bcm63xx/irq.c +@@ -418,9 +418,14 @@ static void bcm63xx_internal_irq_mask(st + static void bcm63xx_internal_irq_unmask(struct irq_data *d) + { + unsigned long flags; ++ const struct cpumask *dest = cpu_online_mask; + + spin_lock_irqsave(&ipic_lock, flags); +- internal_irq_unmask(d->irq - IRQ_INTERNAL_BASE, cpu_online_mask); ++#ifdef CONFIG_SMP ++ if (irqd_affinity_was_set(d)) ++ dest = d->affinity; ++#endif ++ internal_irq_unmask(d->irq - IRQ_INTERNAL_BASE, dest); + spin_unlock_irqrestore(&ipic_lock, flags); + } + +@@ -596,10 +601,30 @@ static int bcm63xx_external_irq_set_type + return IRQ_SET_MASK_OK_NOCOPY; + } + ++#ifdef CONFIG_SMP ++static int bcm63xx_internal_set_affinity(struct irq_data *data, ++ const struct cpumask *dest, ++ bool force) ++{ ++ unsigned int irq = data->irq - IRQ_INTERNAL_BASE; ++ unsigned long flags; ++ ++ spin_lock_irqsave(&ipic_lock, flags); ++ if (!irqd_irq_disabled(data)) ++ internal_irq_unmask(irq, dest); ++ spin_unlock_irqrestore(&ipic_lock, flags); ++ ++ return 0; ++} ++#endif ++ + static struct irq_chip bcm63xx_internal_irq_chip = { + .name = "bcm63xx_ipic", + .irq_mask = bcm63xx_internal_irq_mask, + .irq_unmask = bcm63xx_internal_irq_unmask, ++#ifdef CONFIG_SMP ++ .irq_set_affinity = bcm63xx_internal_set_affinity, ++#endif + }; + + static struct irq_chip bcm63xx_external_irq_chip = { |