diff options
Diffstat (limited to 'include/linux/bottom_half.h')
-rw-r--r-- | include/linux/bottom_half.h | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/include/linux/bottom_half.h b/include/linux/bottom_half.h new file mode 100644 index 000000000..fc53e0ad5 --- /dev/null +++ b/include/linux/bottom_half.h @@ -0,0 +1,42 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _LINUX_BH_H +#define _LINUX_BH_H + +#include <linux/instruction_pointer.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 */ |