[mirror_ubuntu-artful-kernel.git] / arch / x86 / include / asm / irq_regs.h

/*
 * 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_X86_IRQ_REGS_H
#define _ASM_X86_IRQ_REGS_H

#include <asm/percpu.h>

#define ARCH_HAS_OWN_IRQ_REGS

DECLARE_PER_CPU(struct pt_regs *, irq_regs);

static inline struct pt_regs *get_irq_regs(void)
{
	return this_cpu_read(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();
	this_cpu_write(irq_regs, new_regs);

	return old_regs;
}

#endif /* _ASM_X86_IRQ_REGS_32_H */
Commit	Line	Data
d650a514 BG	1	/*
	2	* Per-cpu current frame pointer - the location of the last exception frame on
	3	* the stack, stored in the per-cpu area.
	4	*
	5	* Jeremy Fitzhardinge <jeremy@goop.org>
	6	*/
	7	#ifndef _ASM_X86_IRQ_REGS_H
	8	#define _ASM_X86_IRQ_REGS_H
	9
	10	#include <asm/percpu.h>
	11
	12	#define ARCH_HAS_OWN_IRQ_REGS
	13
	14	DECLARE_PER_CPU(struct pt_regs *, irq_regs);
	15
	16	static inline struct pt_regs *get_irq_regs(void)
	17	{
c6ae41e7	18	return this_cpu_read(irq_regs);
d650a514 BG	19	}
	20
	21	static inline struct pt_regs set_irq_regs(struct pt_regs new_regs)
	22	{
	23	struct pt_regs *old_regs;
	24
	25	old_regs = get_irq_regs();
c6ae41e7	26	this_cpu_write(irq_regs, new_regs);
d650a514 BG	27
	28	return old_regs;
	29	}
	30
	31	#endif /* _ASM_X86_IRQ_REGS_32_H */