Return to hardirq.h CVS log

Up to [Development] / linux-2.6-xfs / include / asm-arm

Merge up to 2.6.10.
Merge of 2.6.x-xfs-melb:linux:21010a by kenmcd.

#ifndef __ASM_HARDIRQ_H
#define __ASM_HARDIRQ_H

#include <linux/config.h>
#include <linux/cache.h>
#include <linux/threads.h>
#include <asm/irq.h>

typedef struct {
	unsigned int __softirq_pending;
} ____cacheline_aligned irq_cpustat_t;

#include <linux/irq_cpustat.h>	/* Standard mappings for irq_cpustat_t above */

#if NR_IRQS > 256
#define HARDIRQ_BITS	9
#else
#define HARDIRQ_BITS	8
#endif

/*
 * The hardirq mask has to be large enough to have space
 * for potentially all IRQ sources in the system nesting
 * on a single CPU:
 */
#if (1 << HARDIRQ_BITS) < NR_IRQS
# error HARDIRQ_BITS is too low!
#endif

#define irq_enter()		(preempt_count() += HARDIRQ_OFFSET)

extern asmlinkage void __do_softirq(void);

#define irq_exit()							\
	do {								\
		preempt_count() -= IRQ_EXIT_OFFSET;			\
		if (!in_interrupt() && local_softirq_pending())		\
			__do_softirq();					\
		preempt_enable_no_resched();				\
	} while (0)

#endif /* __ASM_HARDIRQ_H */