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Edit File: irq_regs.h

/* SPDX-License-Identifier: GPL-2.0-or-later */ /* Fallback per-CPU frame pointer holder * * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) */ #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 __this_cpu_read(__irq_regs); } static inline struct pt_regs *set_irq_regs(struct pt_regs *new_regs) { struct pt_regs *old_regs; old_regs = __this_cpu_read(__irq_regs); __this_cpu_write(__irq_regs, new_regs); return old_regs; } #endif /* _ASM_GENERIC_IRQ_REGS_H */