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File: [Development] / linux-2.6-xfs / include / asm-x86 / irq_regs_32.h (download)

Revision 1.1, Mon Dec 3 16:26:37 2007 UTC (9 years, 10 months ago) by lachlan.longdrop.melbourne.sgi.com
Branch: MAIN
CVS Tags: HEAD 

Merge up to 2.6.24-rc3
Merge of 2.6.x-xfs-melb:linux:30183b by kenmcd.

/*
 * Per-cpu current frame pointer - the location of the last exception frame on
 * the stack, stored in the per-cpu area.
 *
 * Jeremy Fitzhardinge <jeremy@goop.org>
 */
#ifndef _ASM_I386_IRQ_REGS_H
#define _ASM_I386_IRQ_REGS_H

#include <asm/percpu.h>

DECLARE_PER_CPU(struct pt_regs *, irq_regs);

static inline struct pt_regs *get_irq_regs(void)
{
	return x86_read_percpu(irq_regs);
}

static inline struct pt_regs *set_irq_regs(struct pt_regs *new_regs)
{
	struct pt_regs *old_regs;

	old_regs = get_irq_regs();
	x86_write_percpu(irq_regs, new_regs);

	return old_regs;
}

#endif /* _ASM_I386_IRQ_REGS_H */