From e019c249a60fc50319c5897d21d36207c257cc9e Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Tue, 23 Jun 2015 20:29:34 +0200 Subject: genirq: Provide and use __irq_can_set_affinity() Provide a irq_desc based variant of irq_can_set_affinity() to avoid a redundant lookup for the core code users. [ tglx: Split out from combo patch ] Signed-off-by: Jiang Liu Signed-off-by: Thomas Gleixner --- kernel/irq/manage.c | 18 ++++++++++-------- 1 file changed, 10 insertions(+), 8 deletions(-) (limited to 'kernel/irq/manage.c') diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c index d526ac1eb0d1..f5b774223778 100644 --- a/kernel/irq/manage.c +++ b/kernel/irq/manage.c @@ -115,6 +115,14 @@ EXPORT_SYMBOL(synchronize_irq); #ifdef CONFIG_SMP cpumask_var_t irq_default_affinity; +static int __irq_can_set_affinity(struct irq_desc *desc) +{ + if (!desc || !irqd_can_balance(&desc->irq_data) || + !desc->irq_data.chip || !desc->irq_data.chip->irq_set_affinity) + return 0; + return 1; +} + /** * irq_can_set_affinity - Check if the affinity of a given irq can be set * @irq: Interrupt to check @@ -122,13 +130,7 @@ cpumask_var_t irq_default_affinity; */ int irq_can_set_affinity(unsigned int irq) { - struct irq_desc *desc = irq_to_desc(irq); - - if (!desc || !irqd_can_balance(&desc->irq_data) || - !desc->irq_data.chip || !desc->irq_data.chip->irq_set_affinity) - return 0; - - return 1; + return __irq_can_set_affinity(irq_to_desc(irq)); } /** @@ -366,7 +368,7 @@ setup_affinity(unsigned int irq, struct irq_desc *desc, struct cpumask *mask) int node = irq_desc_get_node(desc); /* Excludes PER_CPU and NO_BALANCE interrupts */ - if (!irq_can_set_affinity(irq)) + if (!__irq_can_set_affinity(desc)) return 0; /* -- cgit v1.2.3