2009-01-21 16:26:06 +08:00
|
|
|
/*
|
|
|
|
|
* 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)
|
|
|
|
|
{
|
2012-05-11 15:35:27 +08:00
|
|
|
return this_cpu_read(irq_regs);
|
2009-01-21 16:26:06 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static inline struct pt_regs *set_irq_regs(struct pt_regs *new_regs)
|
|
|
|
|
{
|
|
|
|
|
struct pt_regs *old_regs;
|
|
|
|
|
|
|
|
|
|
old_regs = get_irq_regs();
|
2012-05-11 15:35:27 +08:00
|
|
|
this_cpu_write(irq_regs, new_regs);
|
2009-01-21 16:26:06 +08:00
|
|
|
|
|
|
|
|
return old_regs;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
#endif /* _ASM_X86_IRQ_REGS_32_H */
|
