bpf_percpu_hash_update

Name:bpf_percpu_hash_update

Proto:int bpf_percpu_hash_update(struct bpf_map *map, void *key, void *value, u64 map_flags)

Type:int

Parameter:

Type	Parameter	Name
struct bpf_map *	map
void *	key
void *	value
u64	map_flags

1318

htab = container_of - cast a member of a structure out to the containing structure*@ptr: the pointer to the member.*@type: the type of the container struct this is embedded in.*@member: the name of the member within the struct.(map, structbpf_htab, map)

1321

_read_lock() - mark the beginning of an RCU read-side critical section* When synchronize_rcu() is invoked on one CPU while other CPUs* are within RCU read-side critical sections, then the* synchronize_rcu() is guaranteed to block until after all the other

1322

If htab_is_lru(htab) Then ret = __htab_lru_percpu_map_update_elem(map, key, value, map_flags, true)

1325

Else ret = __htab_percpu_map_update_elem(map, key, value, map_flags, true)

1328

_read_unlock() - marks the end of an RCU read-side critical section.* In most situations, rcu_read_unlock() is immune from deadlock.* However, in kernels built with CONFIG_RCU_BOOST, rcu_read_unlock()

1330

Return ret

**Caller**
Name	Describe
map_update_elem

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