34 lines
773 B
C
34 lines
773 B
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/* 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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#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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