Re: [for-next][PATCH 09/18] tracing: Move pipe reference to trace array instead of current_tracer

dann frazier
2020-07-31T21:17:36Z

On Fri, Jul 31, 2020 at 3:16 PM Steven Rostedt <rostedt@goodmis.org> wrote:
>
> On Fri, 31 Jul 2020 13:33:45 -0600
> dann frazier <dann.frazier@canonical.com> wrote:
>
> > > This is marked as "Fixes" but is more of a clean up than a true fix.
> > > Backport if you want, but its not critical.
> >
> > Thanks Steven! In case it helps backport consideration, I wanted to
> > note that this addresses an issue we've seen with users trying to
> > change current_tracer when they happen to have rasdaemon
> > installed. rasdaemon uses the trace_pipe interface at runtime, which
> > therefore blocks changing the current tracer. But of course, unless
> > you know about rasdaemon internals, it isn't exactly an obvious
> > failure mode.
>
> Ah, then this should probably be backported.
>
> When I push to Linus (during the next merge window) and it gets into
> Linus's tree. Feel free to send stable@vger.kernel.org the sha1 of this
> commit, and ask for it to be backported for the above stated reason.

Will do.

-dann