1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /* Fallback per-CPU frame pointer holder
4 * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
5 * Written by David Howells (dhowells@redhat.com)
8 #ifndef _ASM_GENERIC_IRQ_REGS_H
9 #define _ASM_GENERIC_IRQ_REGS_H
11 #include <linux/percpu.h>
14 * Per-cpu current frame pointer - the location of the last exception frame on
17 DECLARE_PER_CPU(struct pt_regs *, __irq_regs);
19 static inline struct pt_regs *get_irq_regs(void)
21 return __this_cpu_read(__irq_regs);
24 static inline struct pt_regs *set_irq_regs(struct pt_regs *new_regs)
26 struct pt_regs *old_regs;
28 old_regs = __this_cpu_read(__irq_regs);
29 __this_cpu_write(__irq_regs, new_regs);
33 #endif /* _ASM_GENERIC_IRQ_REGS_H */