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https://github.com/torvalds/linux
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Tip revision: 09b56adc98e0f8a21644fcb4d20ad367c3fceb55 authored by Linus Torvalds on 04 December 2007, 04:26:10 UTC
Linux 2.6.24-rc4
Tip revision: 09b56ad
irq.h
#ifndef _ASM_IRQ_H
#define _ASM_IRQ_H

#ifdef __KERNEL__
#include <linux/hardirq.h>

/*
 * the definition of irqs has changed in 2.5.46:
 * NR_IRQS is no longer the number of i/o
 * interrupts (65536), but rather the number
 * of interrupt classes (2).
 * Only external and i/o interrupts make much sense here (CH).
 */

enum interruption_class {
	EXTERNAL_INTERRUPT,
	IO_INTERRUPT,

	NR_IRQS,
};

#endif /* __KERNEL__ */
#endif
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