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
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
);
37 #endif /* _ASM_GENERIC_IRQ_REGS_H */
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