| 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) |
| 9 | extern void __local_bh_disable_ip(unsigned long ip, unsigned int cnt); |
| 10 | #else |
| 11 | static __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 | |
| 18 | static inline void local_bh_disable(void) |
| 19 | { |
| 20 | __local_bh_disable_ip(_THIS_IP_, SOFTIRQ_DISABLE_OFFSET); |
| 21 | } |
| 22 | |
| 23 | extern void _local_bh_enable(void); |
| 24 | extern void __local_bh_enable_ip(unsigned long ip, unsigned int cnt); |
| 25 | |
| 26 | static inline void local_bh_enable_ip(unsigned long ip) |
| 27 | { |
| 28 | __local_bh_enable_ip(ip, SOFTIRQ_DISABLE_OFFSET); |
| 29 | } |
| 30 | |
| 31 | static inline void local_bh_enable(void) |
| 32 | { |
| 33 | __local_bh_enable_ip(_THIS_IP_, SOFTIRQ_DISABLE_OFFSET); |
| 34 | } |
| 35 | |
| 36 | #ifdef CONFIG_PREEMPT_RT |
| 37 | extern bool local_bh_blocked(void); |
| 38 | #else |
| 39 | static inline bool local_bh_blocked(void) { return false; } |
| 40 | #endif |
| 41 | |
| 42 | #endif /* _LINUX_BH_H */ |
| 43 |