softirq.h

来自「this SRC packet is the headfiles that MI」· C头文件 代码 · 共 50 行

/*
 *  include/asm-s390/softirq.h
 *
 *  S390 version
 *
 *  Derived from "include/asm-i386/softirq.h"
 */

#ifndef __ASM_SOFTIRQ_H
#define __ASM_SOFTIRQ_H

#ifndef __LINUX_SMP_H
#include <linux/smp.h>
#endif

#include <asm/atomic.h>
#include <asm/hardirq.h>
#include <asm/lowcore.h>

#define __cpu_bh_enable(cpu) \
                do { barrier(); local_bh_count(cpu)--; } while (0)
#define cpu_bh_disable(cpu) \
                do { local_bh_count(cpu)++; barrier(); } while (0)

#define local_bh_disable()      cpu_bh_disable(smp_processor_id())
#define __local_bh_enable()     __cpu_bh_enable(smp_processor_id())

#define in_softirq() (local_bh_count(smp_processor_id()) != 0)

extern void do_call_softirq(void);

#define local_bh_enable()			          	        \
do {							                \
        unsigned int *ptr = &local_bh_count(smp_processor_id());        \
        barrier();                                                      \
        if (!--*ptr)							\
		if (softirq_pending(smp_processor_id()))		\
			/* Use the async. stack for softirq */		\
			do_call_softirq();				\
} while (0)

#endif	/* __ASM_SOFTIRQ_H */