LXR linux/arch/x86/include/asm/irq

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*
   3 * Per-cpu current frame pointer - the location of the last exception frame on
   4 * the stack, stored in the per-cpu area.
   5 *
   6 * Jeremy Fitzhardinge <jeremy@goop.org>
   7 */
   8#ifndef _ASM_X86_IRQ_REGS_H
   9#define _ASM_X86_IRQ_REGS_H
  10
  11#include <asm/percpu.h>
  12
  13#define ARCH_HAS_OWN_IRQ_REGS
  14
  15DECLARE_PER_CPU(struct pt_regs *, irq_regs);
  16
  17static inline struct pt_regs *get_irq_regs(void)
  18{
  19        return __this_cpu_read(irq_regs);
  20}
  21
  22static inline struct pt_regs *set_irq_regs(struct pt_regs *new_regs)
  23{
  24        struct pt_regs *old_regs;
  25
  26        old_regs = get_irq_regs();
  27        __this_cpu_write(irq_regs, new_regs);
  28
  29        return old_regs;
  30}
  31
  32#endif /* _ASM_X86_IRQ_REGS_32_H */
  33