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

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