x86: Speed up the irq_remapped check in hot pathes

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>

1 files changed, 0 insertions, 2 deletions

diff --git a/include/linux/dmar.h b/include/linux/dmar.h
index 4475f8cf7a62..51651b76d40f 100644
--- a/include/linux/dmar.h
+++ b/include/linux/dmar.h
@@ -122,7 +122,6 @@ extern int set_irte_irq(int irq, struct intel_iommu *iommu, u16 index,
 extern int map_irq_to_irte_handle(int irq, u16 *sub_handle);
 extern int free_irte(int irq);
 
-extern int irq_remapped(int irq);
 extern struct intel_iommu *map_dev_to_ir(struct pci_dev *dev);
 extern struct intel_iommu *map_ioapic_to_ir(int apic);
 extern struct intel_iommu *map_hpet_to_ir(u8 id);
@@ -176,7 +175,6 @@ static inline int set_msi_sid(struct irte *irte, struct pci_dev *dev)
         return 0;
 }
 
-#define irq_remapped(irq)               (0)
 #define enable_intr_remapping(mode)     (-1)
 #define disable_intr_remapping()        (0)
 #define reenable_intr_remapping(mode)   (0)