diff options
| -rw-r--r-- | include/linux/irq.h | 1 | ||||
| -rw-r--r-- | kernel/irq/manage.c | 48 |
2 files changed, 31 insertions, 18 deletions
diff --git a/include/linux/irq.h b/include/linux/irq.h index 76e948fa88f..a10717e1c1f 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -382,6 +382,7 @@ extern void remove_irq(unsigned int irq, struct irqaction *act); extern void irq_cpu_online(void); extern void irq_cpu_offline(void); +extern int __irq_set_affinity_locked(struct irq_data *data, const struct cpumask *cpumask); #ifdef CONFIG_GENERIC_HARDIRQS diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c index 0a2aa73e536..3d151fd762a 100644 --- a/kernel/irq/manage.c +++ b/kernel/irq/manage.c @@ -139,35 +139,26 @@ static inline void irq_get_pending(struct cpumask *mask, struct irq_desc *desc) { } #endif -/** - * irq_set_affinity - Set the irq affinity of a given irq - * @irq: Interrupt to set affinity - * @cpumask: cpumask - * - */ -int irq_set_affinity(unsigned int irq, const struct cpumask *mask) +int __irq_set_affinity_locked(struct irq_data *data, const struct cpumask *mask) { - struct irq_desc *desc = irq_to_desc(irq); - struct irq_chip *chip = desc->irq_data.chip; - unsigned long flags; + struct irq_chip *chip = irq_data_get_irq_chip(data); + struct irq_desc *desc = irq_data_to_desc(data); int ret = 0; - if (!chip->irq_set_affinity) + if (!chip || !chip->irq_set_affinity) return -EINVAL; - raw_spin_lock_irqsave(&desc->lock, flags); - - if (irq_can_move_pcntxt(desc)) { - ret = chip->irq_set_affinity(&desc->irq_data, mask, false); + if (irqd_can_move_in_process_context(data)) { + ret = chip->irq_set_affinity(data, mask, false); switch (ret) { case IRQ_SET_MASK_OK: - cpumask_copy(desc->irq_data.affinity, mask); + cpumask_copy(data->affinity, mask); case IRQ_SET_MASK_OK_NOCOPY: irq_set_thread_affinity(desc); ret = 0; } } else { - irqd_set_move_pending(&desc->irq_data); + irqd_set_move_pending(data); irq_copy_pending(desc, mask); } @@ -176,7 +167,28 @@ int irq_set_affinity(unsigned int irq, const struct cpumask *mask) schedule_work(&desc->affinity_notify->work); } irq_compat_set_affinity(desc); - irqd_set(&desc->irq_data, IRQD_AFFINITY_SET); + irqd_set(data, IRQD_AFFINITY_SET); + + return ret; +} + +/** + * irq_set_affinity - Set the irq affinity of a given irq + * @irq: Interrupt to set affinity + * @cpumask: cpumask + * + */ +int irq_set_affinity(unsigned int irq, const struct cpumask *mask) +{ + struct irq_desc *desc = irq_to_desc(irq); + unsigned long flags; + int ret; + + if (!desc) + return -EINVAL; + + raw_spin_lock_irqsave(&desc->lock, flags); + ret = __irq_set_affinity_locked(irq_desc_get_irq_data(desc), mask); raw_spin_unlock_irqrestore(&desc->lock, flags); return ret; } |