linux/arch/x86/include/asm/irq_regs.h
Brian Gerst d650a51485 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>
2009-01-21 17:26:06 +09:00

32 lines
636 B
C

/*
* 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 */