Re: [PATCH v7 02/13] user_events: Add minimal support for trace_event into ftrace

Steven Rostedt
2021-12-13T16:48:22Z

On Mon, 13 Dec 2021 09:09:15 +0900
Masami Hiramatsu <mhiramat@kernel.org> wrote:

> > > Steve, can we write such a big event data on the trace buffer?
> >
> > In the future yes!
> >
> > https://lore.kernel.org/all/20211125175253.186422-1-tz.stoyanov@gmail.com/
>
> Ah, nice!
>
> >
> > But it will still require some configuration changes from user space. But
> > that said, if the user wants to add a larger size, then they can do so (in
> > the future).
>
> Hmm, so, at this moment I recommend to pick the max size of the event
> smaller than page size but enough large (e.g. 1024, that is finally Beau
> has chosen).
> And after that new ring buffer introduced, expand it.
> What would you think?

I'm fine with that.

-- Steve