Re: [BUGFIX PATCH v3 1/4] selftests/ftrace: Fix to check the existence of set_ftrace_filter

From: Masami Hiramatsu
Date: Tue Nov 26 2019 - 02:31:39 EST


On Mon, 25 Nov 2019 20:54:29 -0500
Steven Rostedt <rostedt@xxxxxxxxxxx> wrote:

> On Tue, 26 Nov 2019 09:13:45 +0900
> Masami Hiramatsu <mhiramat@xxxxxxxxxx> wrote:
>
> > > > @@ -93,7 +96,6 @@ initialize_ftrace() { # Reset ftrace to initial-state
> > > > disable_events
> > > > [ -f set_event_pid ] && echo > set_event_pid
> > > > [ -f set_ftrace_pid ] && echo > set_ftrace_pid
> > > > - [ -f set_ftrace_filter ] && echo | tee set_ftrace_*
> > >
> > > The above should be changed to:
> > >
> > > [ -f set_ftrace_notrace ] && echo > set_ftrace_notrace
> >
> > Ah, good point! I think that should be done by another patch, since
> > it will improve ftracetest.
>
> No, it belongs in this patch, because you are removing:
>
> [ -f set_ftrace_filter ] && echo | tee set_ftrace_*
>
> which is equivalent to:
>
> [ -f set_ftrace_filter ] && echo > set_ftrace_filter
> [ -f set_ftrace_filter ] && echo > set_ftrace_notrace
>
> as the "tee set_ftrace_*" covers both.

Ah, I see.

>
> Without this change, this patch removes the update to
> set_ftrace_notrace.

OK, I'll update it.

Thank you!

>
> -- Steve


--
Masami Hiramatsu <mhiramat@xxxxxxxxxx>