Re: [PATCH 2/3] tracing: Don't return -EINVAL when tracing soft disabled synth events

From: Masami Hiramatsu
Date: Wed Feb 12 2020 - 00:24:59 EST


On Tue, 11 Feb 2020 22:28:56 -0500
Steven Rostedt <rostedt@xxxxxxxxxxx> wrote:

> On Wed, 12 Feb 2020 12:24:15 +0900
> Masami Hiramatsu <mhiramat@xxxxxxxxxx> wrote:
>
> > On Mon, 10 Feb 2020 17:06:49 -0600
> > Tom Zanussi <zanussi@xxxxxxxxxx> wrote:
> >
> > > There's no reason to return -EINVAL when tracing a synthetic event if
> > > it's soft disabled - treat it the same as if it were hard disabled and
> > > return normally.
> > >
> > > Have synth_event_trace() and synth_event_trace_array() just return
> > > normally, and have synth_event_trace_start set the trace state to
> > > disabled and return.
> > >
> >
> > Looks good to me.
> >
> > Reviewed-by: Masami Hiramatsu <mhiramat@xxxxxxxxxx>
> >
>
> Thanks for the review Masami, but these patches have already landed in
> Linus's tree ;-)

Oh, OK. But I think [3/3] still has a real bug (not checking state->disabled
in __synth_event_trace_end()).
I'll send a fix.

Thank you,


--
Masami Hiramatsu <mhiramat@xxxxxxxxxx>