diff options
Diffstat (limited to 'kernel/irq')
| -rw-r--r-- | kernel/irq/migration.c | 21 |
1 files changed, 17 insertions, 4 deletions
diff --git a/kernel/irq/migration.c b/kernel/irq/migration.c index 6bdd03c524c..52a8655fa08 100644 --- a/kernel/irq/migration.c +++ b/kernel/irq/migration.c @@ -18,9 +18,17 @@ void move_native_irq(int irq) cpumask_t tmp; irq_desc_t *desc = irq_descp(irq); - if (likely (!desc->move_irq)) + if (likely(!desc->move_irq)) return; + /* + * Paranoia: cpu-local interrupts shouldn't be calling in here anyway. + */ + if (CHECK_IRQ_PER_CPU(desc->status)) { + WARN_ON(1); + return; + } + desc->move_irq = 0; if (likely(cpus_empty(pending_irq_cpumask[irq]))) @@ -29,7 +37,8 @@ void move_native_irq(int irq) if (!desc->handler->set_affinity) return; - /* note - we hold the desc->lock */ + assert_spin_locked(&desc->lock); + cpus_and(tmp, pending_irq_cpumask[irq], cpu_online_map); /* @@ -42,9 +51,13 @@ void move_native_irq(int irq) * Being paranoid i guess! */ if (unlikely(!cpus_empty(tmp))) { - desc->handler->disable(irq); + if (likely(!(desc->status & IRQ_DISABLED))) + desc->handler->disable(irq); + desc->handler->set_affinity(irq,tmp); - desc->handler->enable(irq); + + if (likely(!(desc->status & IRQ_DISABLED))) + desc->handler->enable(irq); } cpus_clear(pending_irq_cpumask[irq]); } |