Linux/Unix编程

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Unix_Linux

softirq.h：源码内容

							#ifndef __ASM_SOFTIRQ_H
#define __ASM_SOFTIRQ_H
/*
 * 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.
 */
#include <asm/hardirq.h>
#define local_bh_disable()	do { local_bh_count(smp_processor_id())++; barrier(); } while (0)
#define __local_bh_enable()	do { barrier(); local_bh_count(smp_processor_id())--; } while (0)
#define local_bh_enable()  
do {                                                    
	barrier();					
        if (!--local_bh_count(smp_processor_id())       
            && softirq_pending(smp_processor_id())) {   
                do_softirq();                           
        }                                               
} while (0)
#define in_softirq() (local_bh_count(smp_processor_id()) != 0)
#endif	/* __ASM_SOFTIRQ_H */

						