43 lines · c
1/* SPDX-License-Identifier: GPL-2.0 */2#ifndef _LINUX_BH_H3#define _LINUX_BH_H4 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#else11static __always_inline void __local_bh_disable_ip(unsigned long ip, unsigned int cnt)12{13 preempt_count_add(cnt);14 barrier();15}16#endif17 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) HWJS_SUSPENDS;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_RT37extern bool local_bh_blocked(void);38#else39static inline bool local_bh_blocked(void) { return false; }40#endif41 42#endif /* _LINUX_BH_H */43