cpu_map_free

Name:cpu_map_free

Proto:static void cpu_map_free(struct bpf_map *map)

Type:void

Parameter:

Type	Parameter	Name
struct bpf_map *	map

509

cmap = 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_cpu_map, map)

522

bpf_clear_redirect_map(map)

523

Wait for a grace period to elapse. But it is illegal to invoke* synchronize_rcu() from within an RCU read-side critical section.* Therefore, any legal call to synchronize_rcu() is a quiescent

530

for_each_online_cpu(cpu)

531

flush_list = per_cpu_ptr(flush_list, cpu)

533

When Not list_empty - tests whether a list is empty*@head: the list to test. cycle

534

540

When i < max_entries cycle

543

rcpu = READ_ONCE( Below members specific for map type [i])

544

If Not rcpu Then Continue

548

After xchg pointer to bpf_cpu_map_entry, use the call_rcu() to* ensure any driver rcu critical sections have completed, but this* does not guarantee a flush has happened yet. Because driver side* rcu_read_lock/unlock only protects the running XDP program

550

free previously allocated percpu memory

551

bpf_map_area_free( Below members specific for map type )

552

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