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

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * 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
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
d650a514 BG	2	/*
	3	* Per-cpu current frame pointer - the location of the last exception frame on
	4	* the stack, stored in the per-cpu area.
	5	*
	6	* Jeremy Fitzhardinge <jeremy@goop.org>
	7	*/
	8	#ifndef _ASM_X86_IRQ_REGS_H
	9	#define _ASM_X86_IRQ_REGS_H
	10
	11	#include <asm/percpu.h>
	12
	13	#define ARCH_HAS_OWN_IRQ_REGS
	14
	15	DECLARE_PER_CPU(struct pt_regs *, irq_regs);
	16
	17	static inline struct pt_regs *get_irq_regs(void)
	18	{
c6ae41e7	19	return this_cpu_read(irq_regs);
d650a514 BG	20	}
	21
	22	static inline struct pt_regs set_irq_regs(struct pt_regs new_regs)
	23	{
	24	struct pt_regs *old_regs;
	25
	26	old_regs = get_irq_regs();
c6ae41e7	27	this_cpu_write(irq_regs, new_regs);
d650a514 BG	28
	29	return old_regs;
	30	}
	31
	32	#endif /* _ASM_X86_IRQ_REGS_32_H */