diff options
author | Ingo Molnar <mingo@elte.hu> | 2008-12-12 11:53:43 +0100 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-12-12 11:53:43 +0100 |
commit | e18d7af85296cb6999aae171e8a9f8612bea5ae0 (patch) | |
tree | 97a675ecc17bef2f710c50f5ea2a480df0e362c0 /arch/x86/include/asm/irq_regs_32.h | |
parent | 3555105333ae55414d0fe051557bd7dc590f5255 (diff) | |
parent | 8b1fae4e4200388b64dd88065639413cb3f1051c (diff) |
Merge commit 'v2.6.28-rc8' into x86/mm
Diffstat (limited to 'arch/x86/include/asm/irq_regs_32.h')
-rw-r--r-- | arch/x86/include/asm/irq_regs_32.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/x86/include/asm/irq_regs_32.h b/arch/x86/include/asm/irq_regs_32.h new file mode 100644 index 00000000000..af2f02d27fc --- /dev/null +++ b/arch/x86/include/asm/irq_regs_32.h @@ -0,0 +1,29 @@ +/* + * 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_32_H +#define _ASM_X86_IRQ_REGS_32_H + +#include <asm/percpu.h> + +DECLARE_PER_CPU(struct pt_regs *, irq_regs); + +static inline struct pt_regs *get_irq_regs(void) +{ + return x86_read_percpu(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(); + x86_write_percpu(irq_regs, new_regs); + + return old_regs; +} + +#endif /* _ASM_X86_IRQ_REGS_32_H */ |