Function report |
Source Code:arch\x86\kernel\apic\io_apic.c |
Create Date:2022-07-28 08:30:12 |
| Last Modify:2020-03-16 21:24:45 | Copyright©Brick |
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| Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:Starting up a edge-triggered IO-APIC interrupt is* nasty - we need to make sure that we get the edge.* If it is already asserted for some reason, we need* return 1 to indicate that is was pending.* This is not complete - we should be able to fake
Proto:static unsigned int startup_ioapic_irq(struct irq_data *data)
Type:unsigned int
Parameter:
| Type | Parameter | Name |
|---|---|---|
| struct irq_data * | data |
| 1687 | was_pending = 0 , irq = irq |
| 1690 | raw_spin_lock_irqsave( & ioapic_lock, flags) |
| 1691 | If irq < nr_legacy_irqs() Then |
| 1693 | If irq_pending(irq) Then was_pending = 1 |
| 1696 | __unmask_ioapic(chip_data) |
| 1697 | raw_spin_unlock_irqrestore( & ioapic_lock, flags) |
| 1699 | Return was_pending |
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