?? interrupt.h
字號:
/* 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
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