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authorThomas Gleixner <tglx@linutronix.de>2015-08-02 23:38:27 +0300
committerThomas Gleixner <tglx@linutronix.de>2015-08-06 01:14:59 +0300
commita782a7e46bb50822fabfeb7271605762a59c86df (patch)
treea1b4d1798fc5b87f255716f07a170795cf5d5600 /arch/x86/include/asm/irq.h
parentf61ae4fb66a4f7ae49e3456003fc4328d6db09c9 (diff)
downloadlinux-a782a7e46bb50822fabfeb7271605762a59c86df.tar.xz
x86/irq: Store irq descriptor in vector array
We can spare the irq_desc lookup in the interrupt entry code if we store the descriptor pointer in the vector array instead the interrupt number. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Jiang Liu <jiang.liu@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Bjorn Helgaas <bhelgaas@google.com> Link: http://lkml.kernel.org/r/20150802203609.717724106@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/include/asm/irq.h')
-rw-r--r--arch/x86/include/asm/irq.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/x86/include/asm/irq.h b/arch/x86/include/asm/irq.h
index 8008d06581c7..881b4768644a 100644
--- a/arch/x86/include/asm/irq.h
+++ b/arch/x86/include/asm/irq.h
@@ -36,7 +36,9 @@ extern void kvm_set_posted_intr_wakeup_handler(void (*handler)(void));
extern void (*x86_platform_ipi_callback)(void);
extern void native_init_IRQ(void);
-extern bool handle_irq(unsigned irq, struct pt_regs *regs);
+
+struct irq_desc;
+extern bool handle_irq(struct irq_desc *desc, struct pt_regs *regs);
extern __visible unsigned int do_IRQ(struct pt_regs *regs);