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//lib/modules/2.6.32-754.el6.x86_64/build/include/asm-generic/irq_regs.h
/* Fallback per-CPU frame pointer holder * * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ #ifndef _ASM_GENERIC_IRQ_REGS_H #define _ASM_GENERIC_IRQ_REGS_H #include <linux/percpu.h> /* * Per-cpu current frame pointer - the location of the last exception frame on * the stack */ DECLARE_PER_CPU(struct pt_regs *, __irq_regs); static inline struct pt_regs *get_irq_regs(void) { return __get_cpu_var(__irq_regs); } static inline struct pt_regs *set_irq_regs(struct pt_regs *new_regs) { struct pt_regs *old_regs, **pp_regs = &__get_cpu_var(__irq_regs); old_regs = *pp_regs; *pp_regs = new_regs; return old_regs; } #endif /* _ASM_GENERIC_IRQ_REGS_H */