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37 lines
980 B
37 lines
980 B
/* Fallback per-CPU frame pointer holder |
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* |
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* Copyright (C) 2006 Red Hat, Inc. All Rights Reserved. |
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* Written by David Howells (dhowells@redhat.com) |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License |
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* as published by the Free Software Foundation; either version |
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* 2 of the License, or (at your option) any later version. |
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*/ |
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#ifndef _ASM_GENERIC_IRQ_REGS_H |
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#define _ASM_GENERIC_IRQ_REGS_H |
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#include <linux/percpu.h> |
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/* |
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* Per-cpu current frame pointer - the location of the last exception frame on |
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* the stack |
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*/ |
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DECLARE_PER_CPU(struct pt_regs *, __irq_regs); |
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static inline struct pt_regs *get_irq_regs(void) |
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{ |
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return __this_cpu_read(__irq_regs); |
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} |
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static inline struct pt_regs *set_irq_regs(struct pt_regs *new_regs) |
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{ |
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struct pt_regs *old_regs; |
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old_regs = __this_cpu_read(__irq_regs); |
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__this_cpu_write(__irq_regs, new_regs); |
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return old_regs; |
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} |
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#endif /* _ASM_GENERIC_IRQ_REGS_H */
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