include/asm-x86/irq_regs_32.h

   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_32_H
   8 #define ASM_X86__IRQ_REGS_32_H
   9
  10 #include <asm/percpu.h>
  11
  12 DECLARE_PER_CPU(struct pt_regs *, irq_regs);
  13
  14 static inline struct pt_regs *get_irq_regs(void)
  15 {
  16         return x86_read_percpu(irq_regs);
  17 }
  18
  19 static inline struct pt_regs *set_irq_regs(struct pt_regs *new_regs)
  20 {
  21         struct pt_regs *old_regs;
  22
  23         old_regs = get_irq_regs();
  24         x86_write_percpu(irq_regs, new_regs);
  25
  26         return old_regs;
  27 }
  28
  29 #endif /* ASM_X86__IRQ_REGS_32_H */