2874c5fd28
Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
34 lines
773 B
C
34 lines
773 B
C
/* 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 */
|