linux-kernel - Re: [PATCH 0/5] tracing: Synthetic event dynamic string fixes

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Message-ID: <20201012111324.0ea933e0@gandalf.local.home>
Date:   Mon, 12 Oct 2020 11:13:24 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Tom Zanussi <zanussi@...nel.org>
Cc:     axelrasmussen@...gle.com, mhiramat@...nel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/5] tracing: Synthetic event dynamic string fixes

On Fri,  9 Oct 2020 10:17:06 -0500
Tom Zanussi <zanussi@...nel.org> wrote:

> These patches provide fixes for the problems observed by Masami in the
> new synthetic event dynamic string patchset.
> 
> The first patch (tracing: Don't show dynamic string internals in
> synthetic event description) removes the __data_loc from the event
> description but leaves it in the format.
> 
> The patch (tracing: Add synthetic event error logging) addresses the
> lack of error messages when parse errors occur.
> 
> The remaining three patches address the other problems Masami noted
> which result from allowing illegal characters in synthetic event and
> field names when defining an event.  The is_good_name() function is
> used to check that's not possible for the probe events, but should
> also be used for the synthetic events as well.
> 
> (tracing: Move is_good_name() from trace_probe.h to trace.h) makes
> that function available to other trace subsystems by putting it in
> trace.h.  (tracing: Check that the synthetic event and field names are
> legal) applies it to the synthetic events, and (selftests/ftrace:
> Change synthetic event name for inter-event-combined test) changes a
> testcase that now fails because it uses an illegal name.
> 


Hi Tom,

Would you be able to address Masami's concerns on patches 1 and 4?

-- Steve