Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\bpf\arraymap.c Create Date:2022-07-28 13:11:17
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name:Called when map->refcnt goes to zero, either from workqueue or from syscall

Proto:static void array_map_free(struct bpf_map *map)

Type:void

Parameter:

TypeParameterName
struct bpf_map *map
387  array = 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_array, map)
394  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
396  If map_type == BPF_MAP_TYPE_PERCPU_ARRAY Then bpf_array_free_percpu(array)
399  If map_flags & Enable memory-mapping BPF map Then bpf_map_area_free(array_map_vmalloc_addr(array))
401  Else bpf_map_area_free(array)