| Brian Gerst | d650a51 | 2009-01-21 17:26:06 +0900 | [diff] [blame] | 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 | |
| 14 | DECLARE_PER_CPU(struct pt_regs *, irq_regs); |
| 15 | |
| 16 | static inline struct pt_regs *get_irq_regs(void) |
| 17 | { |
| 18 | return percpu_read(irq_regs); |
| 19 | } |
| 20 | |
| 21 | static 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 | percpu_write(irq_regs, new_regs); |
| 27 | |
| 28 | return old_regs; |
| 29 | } |
| 30 | |
| 31 | #endif /* _ASM_X86_IRQ_REGS_32_H */ |