forge/linux-pinenote
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

x86: Speed up the irq_remapped check in hot pathes

Browse source 
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
Download patch file Download diff file Expand all files Collapse all files

2
include/linux/dmar.h
View file

@ -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)