Line data    Source code

       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        4190 :         preempt_count_add(cnt);
      14        2095 :         barrier();
      15             : }
      16             : #endif
      17             : 
      18             : static inline void local_bh_disable(void)
      19             : {
      20        3332 :         __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        1666 :         __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 */