函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\trace\fgraph.c Create Date:2022-07-27 13:24:45
Last Modify:2020-03-17 20:08:56 Copyright©Brick
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函数名称：The function graph tracer should only trace the functions defined* by set_ftrace_filter and set_ftrace_notrace

函数原型：void update_function_graph_func(void)

返回类型：void

参数：无

465  bool do_test = false
473  Traverse the ftrace_global_list, invoking all entries. The reason that we* can use rcu_dereference_raw_check() is that elements removed from this list* are simply leaked, so there is no need to interact with a grace-period* mechanism(op, ftrace_ops_list)
474  如果op不等于global_ops且op不等于graph_ops且op不等于ftrace_list_end则
476  do_test = true
478  转到:out
481  out :
482  如果do_test则ftrace_graph_entry等于ftrace_graph_entry_test
484  否则ftrace_graph_entry等于__ftrace_graph_entry
调用者
名称描述
register_ftrace_graph
update_ftrace_function