函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\trace\trace_functions.c Create Date:2022-07-27 13:15:34
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：func_set_flag

函数原型：static int func_set_flag(struct trace_array *tr, unsigned int old_flags, unsigned int bit, int set)

返回类型：int

参数：

类型参数名称
struct trace_array *tr
unsigned intold_flags
unsigned intbit
intset
239  当:bit恒等于TRACE_FUNC_OPT_STACK
241  如果非非set恒等于非非val按位与TRACE_FUNC_OPT_STACK的值则退出
245  如果current_trace不等于function_trace则退出
248  register_ftrace_function - unregister a function for profiling.*@ops - ops structure that holds the function to unregister* Unregister a function that was added to be called by ftrace profiling.
250  如果set则
251  func等于function_stack_trace_call
252  gister_ftrace_function - register a function for profiling*@ops - ops structure that holds the function for profiling
253  否则
254  func等于function_trace_call
255  gister_ftrace_function - register a function for profiling*@ops - ops structure that holds the function for profiling
258  退出
259  默认
260  返回:负EINVAL
263  返回:0