1/* Fallback per-CPU frame pointer holder
 2 *
 3 * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
 4 * Written by David Howells (dhowells@redhat.com)
 5 *
 6 * This program is free software; you can redistribute it and/or
 7 * modify it under the terms of the GNU General Public License
 8 * as published by the Free Software Foundation; either version
 9 * 2 of the License, or (at your option) any later version.
10 */
11
12#ifndef _ASM_GENERIC_IRQ_REGS_H
13#define _ASM_GENERIC_IRQ_REGS_H
14
15#include <linux/percpu.h>
16
17/*
18 * Per-cpu current frame pointer - the location of the last exception frame on
19 * the stack
20 */
21DECLARE_PER_CPU(struct pt_regs *, __irq_regs);
22
23static inline struct pt_regs *get_irq_regs(void)
24{
25	return __this_cpu_read(__irq_regs);
26}
27
28static inline struct pt_regs *set_irq_regs(struct pt_regs *new_regs)
29{
30	struct pt_regs *old_regs;
31
32	old_regs = __this_cpu_read(__irq_regs);
33	__this_cpu_write(__irq_regs, new_regs);
34	return old_regs;
35}
36
37#endif /* _ASM_GENERIC_IRQ_REGS_H */

 1/* Fallback per-CPU frame pointer holder
 2 *
 3 * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
 4 * Written by David Howells (dhowells@redhat.com)
 5 *
 6 * This program is free software; you can redistribute it and/or
 7 * modify it under the terms of the GNU General Public License
 8 * as published by the Free Software Foundation; either version
 9 * 2 of the License, or (at your option) any later version.
10 */
11
12#ifndef _ASM_GENERIC_IRQ_REGS_H
13#define _ASM_GENERIC_IRQ_REGS_H
14
15#include <linux/percpu.h>
16
17/*
18 * Per-cpu current frame pointer - the location of the last exception frame on
19 * the stack
20 */
21DECLARE_PER_CPU(struct pt_regs *, __irq_regs);
22
23static inline struct pt_regs *get_irq_regs(void)
24{
25	return __this_cpu_read(__irq_regs);
26}
27
28static inline struct pt_regs *set_irq_regs(struct pt_regs *new_regs)
29{
30	struct pt_regs *old_regs;
31
32	old_regs = __this_cpu_read(__irq_regs);
33	__this_cpu_write(__irq_regs, new_regs);
34	return old_regs;
35}
36
37#endif /* _ASM_GENERIC_IRQ_REGS_H */