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
38
39
40
41
/* interrupt.h */
#ifndef _LINUX_INTERRUPT_H
#define _LINUX_INTERRUPT_H
struct bh_struct {
void (*routine)(void *);
void *data;
};
extern unsigned long bh_active;
extern unsigned long bh_mask;
extern struct bh_struct bh_base[32];
/* Who gets which entry in bh_base. Things which will occur most often
should come first. */
enum {
TIMER_BH = 0,
CONSOLE_BH,
SERIAL_BH,
TTY_BH,
INET_BH,
KEYBOARD_BH
};
extern inline void mark_bh(int nr)
{
__asm__ __volatile__("orl %1,%0":"=m" (bh_active):"ir" (1<<nr));
}
extern inline void disable_bh(int nr)
{
__asm__ __volatile__("andl %1,%0":"=m" (bh_mask):"ir" (~(1<<nr)));
}
extern inline void enable_bh(int nr)
{
__asm__ __volatile__("orl %1,%0":"=m" (bh_mask):"ir" (1<<nr));
}
#endif