rcu_read_lock_held

Name:_read_lock_held() - might we be in RCU read-side critical section?* If CONFIG_DEBUG_LOCK_ALLOC is selected, returns nonzero iff in an RCU* read-side critical section

Proto:int rcu_read_lock_held(void)

Type:int

Parameter:Nothing

281

If _read_lock_held_common() - might we be in RCU-sched read-side critical section?*@ret: Best guess answer if lockdep cannot be relied on* Returns true if lockdep must be ignored, in which case *ret contains* the best guess described below Then Return ret

283

Return lock_is_held( & rcu_lock_map)

**Caller**
Name	Describe
css_from_id	ss_from_id - lookup css by id@id: the cgroup id@ss: cgroup subsys to be looked into* Returns the css if there's valid one with @id, otherwise returns NULL.* Should be called under rcu_read_lock().
____bpf_map_lookup_elem	If kernel subsystem is allowing eBPF programs to call this function,* inside its own verifier_ops->get_func_proto() callback it should return* bpf_map_lookup_elem_proto, so that verifier can properly check the arguments* Different map implementations will
____bpf_map_update_elem
____bpf_map_delete_elem
__htab_map_lookup_elem	Called from syscall or from eBPF program directly, so* arguments have to match bpf_map_lookup_elem() exactly.* The return value is adjusted by BPF instructions* in htab_map_gen_lookup().
htab_map_get_next_key	Called from syscall
htab_map_update_elem	Called from syscall or from eBPF program
htab_lru_map_update_elem
__htab_percpu_map_update_elem
__htab_lru_percpu_map_update_elem
htab_map_delete_elem	Called from syscall or from eBPF program
htab_lru_map_delete_elem
xsk_map_lookup_elem
stack_map_get_next_key
__blkg_lookup_create	__blkg_lookup_create - lookup blkg, try to create one if not there@blkcg: blkcg of interest@q: request_queue of interest* Lookup blkg for the @blkcg - @q pair. If it doesn't exist, try to* create one
blkg_lookup_check	Performs queue bypass and policy enabled checks then looks up blkg.
blk_throtl_bio

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