Merge tag 'v3.3.7' into 3.3/master
[zen-stable.git] / include / asm-generic / irq_regs.h
blob6bf9355fa7eb5097c59454ac8d98e46e09c1f621
1 /* Fallback per-CPU frame pointer holder
3 * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
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.
12 #ifndef _ASM_GENERIC_IRQ_REGS_H
13 #define _ASM_GENERIC_IRQ_REGS_H
15 #include <linux/percpu.h>
18 * Per-cpu current frame pointer - the location of the last exception frame on
19 * the stack
21 DECLARE_PER_CPU(struct pt_regs *, __irq_regs);
23 static inline struct pt_regs *get_irq_regs(void)
25 return __this_cpu_read(__irq_regs);
28 static inline struct pt_regs *set_irq_regs(struct pt_regs *new_regs)
30 struct pt_regs *old_regs;
32 old_regs = __this_cpu_read(__irq_regs);
33 __this_cpu_write(__irq_regs, new_regs);
34 return old_regs;
37 #endif /* _ASM_GENERIC_IRQ_REGS_H */