| |
| #include <linux/irq.h> |
| #include <linux/interrupt.h> |
| |
| #include "internals.h" |
| |
| void move_masked_irq(int irq) |
| { |
| struct irq_desc *desc = irq_to_desc(irq); |
| |
| if (likely(!(desc->status & IRQ_MOVE_PENDING))) |
| return; |
| |
| /* |
| * Paranoia: cpu-local interrupts shouldn't be calling in here anyway. |
| */ |
| if (CHECK_IRQ_PER_CPU(desc->status)) { |
| WARN_ON(1); |
| return; |
| } |
| |
| desc->status &= ~IRQ_MOVE_PENDING; |
| |
| if (unlikely(cpumask_empty(desc->pending_mask))) |
| return; |
| |
| if (!desc->irq_data.chip->set_affinity) |
| return; |
| |
| assert_raw_spin_locked(&desc->lock); |
| |
| /* |
| * If there was a valid mask to work with, please |
| * do the disable, re-program, enable sequence. |
| * This is *not* particularly important for level triggered |
| * but in a edge trigger case, we might be setting rte |
| * when an active trigger is comming in. This could |
| * cause some ioapics to mal-function. |
| * Being paranoid i guess! |
| * |
| * For correct operation this depends on the caller |
| * masking the irqs. |
| */ |
| if (likely(cpumask_any_and(desc->pending_mask, cpu_online_mask) |
| < nr_cpu_ids)) |
| if (!desc->irq_data.chip->set_affinity(irq, desc->pending_mask)) { |
| cpumask_copy(desc->irq_data.affinity, desc->pending_mask); |
| irq_set_thread_affinity(desc); |
| } |
| |
| cpumask_clear(desc->pending_mask); |
| } |
| |
| void move_native_irq(int irq) |
| { |
| struct irq_desc *desc = irq_to_desc(irq); |
| |
| if (likely(!(desc->status & IRQ_MOVE_PENDING))) |
| return; |
| |
| if (unlikely(desc->status & IRQ_DISABLED)) |
| return; |
| |
| desc->irq_data.chip->mask(irq); |
| move_masked_irq(irq); |
| desc->irq_data.chip->unmask(irq); |
| } |
| |