diff options
| author | Jiang Liu <jiang.liu@linux.intel.com> | 2015-06-23 20:29:34 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2015-07-11 23:14:25 +0200 |
| commit | e019c249a60fc50319c5897d21d36207c257cc9e (patch) | |
| tree | 90b18333b52baf543f5699b622d0ea1c7b1745f7 /kernel/irq/manage.c | |
| parent | 0dcdbc97557fd8c297c4e38e9f66e304a64bae9d (diff) | |
| download | linux-0-day-e019c249a60fc50319c5897d21d36207c257cc9e.tar.gz linux-0-day-e019c249a60fc50319c5897d21d36207c257cc9e.tar.xz | |
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 <jiang.liu@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/irq/manage.c')
| -rw-r--r-- | kernel/irq/manage.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c index d526ac1eb0d13..f5b7742237782 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; /* |