https://github.com/torvalds/linux
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Tip revision: 7d1311b93e58ed55f3a31cc8f94c4b8fe988a2b9 authored by Linus Torvalds on 16 August 2014, 16:40:26 UTC
Linux 3.17-rc1
Tip revision: 7d1311b
bottom_half.h
#ifndef _LINUX_BH_H
#define _LINUX_BH_H

#include <linux/preempt.h>
#include <linux/preempt_mask.h>

#ifdef CONFIG_TRACE_IRQFLAGS
extern void __local_bh_disable_ip(unsigned long ip, unsigned int cnt);
#else
static __always_inline void __local_bh_disable_ip(unsigned long ip, unsigned int cnt)
{
	preempt_count_add(cnt);
	barrier();
}
#endif

static inline void local_bh_disable(void)
{
	__local_bh_disable_ip(_THIS_IP_, SOFTIRQ_DISABLE_OFFSET);
}

extern void _local_bh_enable(void);
extern void __local_bh_enable_ip(unsigned long ip, unsigned int cnt);

static inline void local_bh_enable_ip(unsigned long ip)
{
	__local_bh_enable_ip(ip, SOFTIRQ_DISABLE_OFFSET);
}

static inline void local_bh_enable(void)
{
	__local_bh_enable_ip(_THIS_IP_, SOFTIRQ_DISABLE_OFFSET);
}

#endif /* _LINUX_BH_H */
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