[PATCH v3 14/18] tracing: probeevent: Add $argN for accessing function args

2018-02-23 Thread Masami Hiramatsu
Add $argN special fetch variable for accessing function arguments. This allows user to trace the Nth argument easily at the function entry. Note that this returns most probably assignment of registers and stacks. In some case, it may not work well. If you need to access correct registers or

[PATCH v3 14/18] tracing: probeevent: Add $argN for accessing function args

2018-02-23 Thread Masami Hiramatsu
Add $argN special fetch variable for accessing function arguments. This allows user to trace the Nth argument easily at the function entry. Note that this returns most probably assignment of registers and stacks. In some case, it may not work well. If you need to access correct registers or