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x86: Speed up the irq_remapped check in hot pathes

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irq_2_iommu is in struct irq_cfg, so we can do the irq_remapped check
based on irq_cfg instead of going through a lookup function. That's
especially interesting in the eoi_ioapic_irq() hotpath.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
This commit is contained in:
Thomas Gleixner
2010-10-11 11:55:37 +02:00
parent d585d060b4
commit 1a0730d664
4 changed files with 14 additions and 15 deletions
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7
drivers/pci/intr_remapping.c
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@@ -54,13 +54,6 @@ static struct irq_2_iommu *irq_2_iommu(unsigned int irq)
return cfg ? &cfg->irq_2_iommu : NULL;
}
int irq_remapped(int irq)
{
struct irq_2_iommu *irq_iommu = irq_2_iommu(irq);
return irq_iommu ? irq_iommu->iommu != NULL : 0;
}
int get_irte(int irq, struct irte *entry)
{
struct irq_2_iommu *irq_iommu = irq_2_iommu(irq);