函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:mm\vmalloc.c Create Date:2022-07-27 16:30:40
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：s_start

函数原型：static void *s_start(struct seq_file *m, loff_t *pos)__acquires(&vmap_purge_lock) __acquires(&vmap_area_lock)

返回类型：void

参数：

类型参数名称
struct seq_file *m
loff_t *pos
3537  mutex_lock( & Serialize vmap purging. There is no actual criticial section protected* by this look, but we want to avoid concurrent calls for performance* reasons and to make the pcpu_get_vm_areas more deterministic.)
3538  加自旋锁
3540  返回:Helpers for iteration over list_head-s in seq_files