1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _LINUX_BH_H
3#define _LINUX_BH_H
4
5#include <linux/instruction_pointer.h>
6#include <linux/preempt.h>
7
8#if defined(CONFIG_PREEMPT_RT) || defined(CONFIG_TRACE_IRQFLAGS)
9extern void __local_bh_disable_ip(unsigned long ip, unsigned int cnt);
10#else
11static __always_inline void __local_bh_disable_ip(unsigned long ip, unsigned int cnt)
12{
13 preempt_count_add(cnt);
14 barrier();
15}
16#endif
17
18static inline void local_bh_disable(void)
19{
20 __local_bh_disable_ip(_THIS_IP_, SOFTIRQ_DISABLE_OFFSET);
21}
22
23extern void _local_bh_enable(void);
24extern void __local_bh_enable_ip(unsigned long ip, unsigned int cnt);
25
26static inline void local_bh_enable_ip(unsigned long ip)
27{
28 __local_bh_enable_ip(ip, SOFTIRQ_DISABLE_OFFSET);
29}
30
31static inline void local_bh_enable(void)
32{
33 __local_bh_enable_ip(_THIS_IP_, SOFTIRQ_DISABLE_OFFSET);
34}
35
36#ifdef CONFIG_PREEMPT_RT
37extern bool local_bh_blocked(void);
38#else
39static inline bool local_bh_blocked(void) { return false; }
40#endif
41
42#endif /* _LINUX_BH_H */
43