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v0.8.1
https://github.com/torvalds/linux
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Tip revision: b30a3f6257ed2105259b404d419b4964e363928c authored by Linus Torvalds on 20 September 2010, 23:56:53 UTC
Linux 2.6.36-rc5
Tip revision: b30a3f6
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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