[mirror_ubuntu-jammy-kernel.git] / include / linux / bottom_half.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_BH_H
#define _LINUX_BH_H

#include <linux/preempt.h>

#if defined(CONFIG_PREEMPT_RT) || defined(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);
}

#ifdef CONFIG_PREEMPT_RT
extern bool local_bh_blocked(void);
#else
static inline bool local_bh_blocked(void) { return false; }
#endif

#endif /* _LINUX_BH_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
676dcb8b AM	2	#ifndef _LINUX_BH_H
	3	#define _LINUX_BH_H
	4
0bd3a173	5	#include <linux/preempt.h>
0bd3a173	6
8b1c04ac	7	#if defined(CONFIG_PREEMPT_RT) \|\| defined(CONFIG_TRACE_IRQFLAGS)
0bd3a173 PZ	8	extern void __local_bh_disable_ip(unsigned long ip, unsigned int cnt);
	9	#else
	10	static __always_inline void __local_bh_disable_ip(unsigned long ip, unsigned int cnt)
	11	{
	12	preempt_count_add(cnt);
	13	barrier();
	14	}
	15	#endif
	16
	17	static inline void local_bh_disable(void)
	18	{
	19	__local_bh_disable_ip(_THIS_IP_, SOFTIRQ_DISABLE_OFFSET);
	20	}
	21
676dcb8b	22	extern void _local_bh_enable(void);
0bd3a173 PZ	23	extern void __local_bh_enable_ip(unsigned long ip, unsigned int cnt);
	24
	25	static inline void local_bh_enable_ip(unsigned long ip)
	26	{
	27	__local_bh_enable_ip(ip, SOFTIRQ_DISABLE_OFFSET);
	28	}
	29
	30	static inline void local_bh_enable(void)
	31	{
	32	__local_bh_enable_ip(_THIS_IP_, SOFTIRQ_DISABLE_OFFSET);
	33	}
676dcb8b	34
47c218dc TG	35	#ifdef CONFIG_PREEMPT_RT
	36	extern bool local_bh_blocked(void);
	37	#else
	38	static inline bool local_bh_blocked(void) { return false; }
	39	#endif
	40
676dcb8b	41	#endif /* _LINUX_BH_H */