projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 70463dac JF |
1 | /* |
| 2 | * Per-cpu current frame pointer - the location of the last exception frame on | |
| 7c3576d2 | 3 | * the stack, stored in the per-cpu area. |
| 70463dac JF |
4 | * |
| 5 | * Jeremy Fitzhardinge <jeremy@goop.org> | |
| 6 | */ | |
| 1965aae3 PA |
7 | #ifndef _ASM_X86_IRQ_REGS_32_H |
| 8 | #define _ASM_X86_IRQ_REGS_32_H | |
| 70463dac | 9 | |
| 7c3576d2 JF |
10 | #include <asm/percpu.h> |
| 11 | ||
| 12 | DECLARE_PER_CPU(struct pt_regs *, irq_regs); | |
| 70463dac JF |
13 | |
| 14 | static inline struct pt_regs *get_irq_regs(void) | |
| 15 | { | |
| 7c3576d2 | 16 | return x86_read_percpu(irq_regs); |
| 70463dac JF |
17 | } |
| 18 | ||
| 19 | static inline struct pt_regs *set_irq_regs(struct pt_regs *new_regs) | |
| 20 | { | |
| 21 | struct pt_regs *old_regs; | |
| 22 | ||
| 7c3576d2 JF |
23 | old_regs = get_irq_regs(); |
| 24 | x86_write_percpu(irq_regs, new_regs); | |
| 70463dac JF |
25 | |
| 26 | return old_regs; | |
| 27 | } | |
| 28 | ||
| 1965aae3 | 29 | #endif /* _ASM_X86_IRQ_REGS_32_H */ |