函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\trace\trace_events_trigger.c Create Date:2022-07-27 13:35:18
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：event_enable_register_trigger

函数原型：int event_enable_register_trigger(char *glob, struct event_trigger_ops *ops, struct event_trigger_data *data, struct trace_event_file *file)

返回类型：int

参数：

类型参数名称
char *glob
struct event_trigger_ops *ops
struct event_trigger_data *data
struct trace_event_file *file
1502  enable_data等于private_data
1505  ret等于0
1507  lockdep_assert_held( & event_mutex)
1510  test_enable_data等于private_data
1511  如果test_enable_data且trigger_type恒等于trigger_type且file恒等于file则
1515  ret等于负EEXIST
1516  转到:out
1520  如果init则
1521  ret等于init(ops, data)
1522  如果ret小于0则转到:out
1526  添加RCU保护项
1527  ret自加
1529  pdate_cond_flag - Set or reset the TRIGGER_COND bit*@file: The trace_event_file associated with the event* If an event has triggers and any of those triggers has a filter or* a post_trigger, trigger invocation needs to be deferred until after* the current
1530  如果trace_event_trigger_enable_disable(file, 1)小于0则
1531  删除不需要重新初始化的列表项
1532  pdate_cond_flag - Set or reset the TRIGGER_COND bit*@file: The trace_event_file associated with the event* If an event has triggers and any of those triggers has a filter or* a post_trigger, trigger invocation needs to be deferred until after* the current
1533  ret自减
1535  out :
1536  返回:ret