blob: 5ae1d07d4a1275a8ac91996b23753270e5033cb3 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
|
/* Fallback per-CPU frame pointer holder
*
* Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_GENERIC_IRQ_REGS_H
#define _ASM_GENERIC_IRQ_REGS_H
#include <linux/percpu.h>
/*
* Per-cpu current frame pointer - the location of the last exception frame on
* the stack
*/
DECLARE_PER_CPU(struct pt_regs *, __irq_regs);
static inline struct pt_regs *get_irq_regs(void)
{
return __get_cpu_var(__irq_regs);
}
static inline struct pt_regs *set_irq_regs(struct pt_regs *new_regs)
{
struct pt_regs *old_regs, **pp_regs = &__get_cpu_var(__irq_regs);
old_regs = *pp_regs;
*pp_regs = new_regs;
return old_regs;
}
#endif /* _ASM_GENERIC_IRQ_REGS_H */
|
