auto   m /* SPDX-License-Identifier: GPL-2.0 */ /* * include/linux/cpuhplock.h - CPU hotplug locking * * Locking functions for CPU hotplug. */ #ifndef _LINUX_CPUHPLOCK_H_ #define _LINUX_CPUHPLOCK_H_ #include #include struct device; extern int lockdep_is_cpus_held(void); #ifdef CONFIG_HOTPLUG_CPU void cpus_write_lock(void); void cpus_write_unlock(void); void cpus_read_lock(void); void cpus_read_unlock(void); int cpus_read_trylock(void); void lockdep_assert_cpus_held(void); void cpu_hotplug_disable_offlining(void); void cpu_hotplug_disable(void); void cpu_hotplug_enable(void); void clear_tasks_mm_cpumask(int cpu); int remove_cpu(unsigned int cpu); int cpu_device_down(struct device *dev); void smp_shutdown_nonboot_cpus(unsigned int primary_cpu); #else /* CONFIG_HOTPLUG_CPU */ static inline void cpus_write_lock(void) { } static inline void cpus_write_unlock(void) { } static inline void cpus_read_lock(void) { } static inline void cpus_read_unlock(void) { } static inline int cpus_read_trylock(void) { return true; } static inline void lockdep_assert_cpus_held(void) { } static inline void cpu_hotplug_disable_offlining(void) { } static inline void cpu_hotplug_disable(void) { } static inline void cpu_hotplug_enable(void) { } static inline int remove_cpu(unsigned int cpu) { return -EPERM; } static inline void smp_shutdown_nonboot_cpus(unsigned int primary_cpu) { } #endif /* !CONFIG_HOTPLUG_CPU */ DEFINE_LOCK_GUARD_0(cpus_read_lock, cpus_read_lock(), cpus_read_unlock()) #endif /* _LINUX_CPUHPLOCK_H_ */ 0 l=J 2RP'n4%1h e_ub &=Ly?