函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\bpf\arraymap.c Create Date:2022-07-27 14:28:01
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：prog_array_map_poke_track

函数原型：static int prog_array_map_poke_track(struct bpf_map *map, struct bpf_prog_aux *prog_aux)

返回类型：int

参数：

类型参数名称
struct bpf_map *map
struct bpf_prog_aux *prog_aux
699  ret等于0
701  aux = ({
701  __mptr等于map
701  循环
701  当0循环
701  __mptr减__builtin_offsetof(structbpf_array, map)
701  })->aux
702  mutex_lock( & poke_mutex)
704  如果aux恒等于prog_aux则转到:out
708  elem等于开辟内存
709  如果非elem则
710  ret等于负ENOMEM
711  转到:out
714  初始化链表头
719  aux等于prog_aux
721  添加链表项
722  out :
723  mutex_unlock - release the mutex*@lock: the mutex to be released* Unlock a mutex that has been locked by this task previously.* This function must not be used in interrupt context. Unlocking* of a not locked mutex is not allowed.
724  返回:ret