diff options
| author | Brian Gerst <brgerst@gmail.com> | 2009-01-21 17:26:06 +0900 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2009-01-21 17:26:06 +0900 |
| commit | d650a5148593b65a3c3f9a344f46b91b7dfe7713 (patch) | |
| tree | 82f95863cf34977065a78dd2521d78208fa83336 /arch/x86/include/asm/irq_regs.h | |
| parent | 6826c8ff07b5f95df0473a748a9831707079b940 (diff) | |
x86: merge irq_regs.h
Impact: cleanup, better irq_regs code generation for x86_64
Make 64-bit use the same optimizations as 32-bit.
Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'arch/x86/include/asm/irq_regs.h')
| -rw-r--r-- | arch/x86/include/asm/irq_regs.h | 36 |
1 files changed, 31 insertions, 5 deletions
diff --git a/arch/x86/include/asm/irq_regs.h b/arch/x86/include/asm/irq_regs.h index 89c898ab298..77843225b7e 100644 --- a/arch/x86/include/asm/irq_regs.h +++ b/arch/x86/include/asm/irq_regs.h @@ -1,5 +1,31 @@ -#ifdef CONFIG_X86_32 -# include "irq_regs_32.h" -#else -# include "irq_regs_64.h" -#endif +/* + * Per-cpu current frame pointer - the location of the last exception frame on + * the stack, stored in the per-cpu area. + * + * Jeremy Fitzhardinge <jeremy@goop.org> + */ +#ifndef _ASM_X86_IRQ_REGS_H +#define _ASM_X86_IRQ_REGS_H + +#include <asm/percpu.h> + +#define ARCH_HAS_OWN_IRQ_REGS + +DECLARE_PER_CPU(struct pt_regs *, irq_regs); + +static inline struct pt_regs *get_irq_regs(void) +{ + return percpu_read(irq_regs); +} + +static inline struct pt_regs *set_irq_regs(struct pt_regs *new_regs) +{ + struct pt_regs *old_regs; + + old_regs = get_irq_regs(); + percpu_write(irq_regs, new_regs); + + return old_regs; +} + +#endif /* _ASM_X86_IRQ_REGS_32_H */ |