| Function report | 
| Source Code: kernel\trace\trace_events_hist.c | Create Date:2022-07-28 12:31:23 | 
| Last Modify:2020-03-12 14:18:49 | Copyright©Brick | 
| home page | Tree | 
| Annotation kernel can get tool activity | Download SCCT | Chinese | 
Name:reate_target_field_var - Automatically create a variable for a field*@target_hist_data: The target hist trigger*@subsys_name: Optional subsystem name*@event_name: Optional event name*@var_name: The name of the field (and the resulting variable)* Hist
Proto:static struct field_var *create_target_field_var(struct hist_trigger_data *target_hist_data, char *subsys_name, char *event_name, char *var_name)
Type:struct field_var
Parameter:
| Type | Parameter | Name | 
|---|---|---|
| struct hist_trigger_data * | target_hist_data | |
| char * | subsys_name | |
| char * | event_name | |
| char * | var_name | 
| 3593 | file = event_file | 
| 3595 | If subsys_name Then | 
| 3598 | If Not event_name Then Return NULL | 
| 3601 | call = event_call | 
| 3603 | If strcmp(subsys_name, system) != 0 Then Return NULL | 
| 3606 | If strcmp(event_name, trace_event_name(call)) != 0 Then Return NULL | 
| 3610 | Return create_field_var(target_hist_data, file, var_name) | 
| Name | Describe | 
|---|---|
| trace_action_create_field_var | |
| action_create | 
| Source code conversion tool public plug-in interface | X | 
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