tracing: probeevent: Add $argN for accessing function args
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 stacks you should use perf-probe. Link: http://lkml.kernel.org/r/152465888632.26224.3412465701570253696.stgit@devbox Signed-off-by:Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by:
Steven Rostedt (VMware) <rostedt@goodmis.org>
parent
3c88ee19
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