Re: [GIT PULL] tracing/urgent for v2.6.31

Ingo Molnar
2009-06-11T10:26:35Z

* Linus Torvalds <torvalds@linux-foundation.org> wrote:

> On Wed, 10 Jun 2009, Steven Rostedt wrote:
> >
> > Well it was:
> >
> > default y if DEBUG_KERNEL
> >
> > Where the rational was that if you want to debug the kernel, you
> > might want to see some tracing features that are available to
> > you.
>
> Sure. I think that FTRACE config is borderline fine, although I
> think tracing is pretty different from the debug options that
> don't need the user to actually do anything (like
> PAGEALLOC_DEBUG).
>
> It's the other ones I think were clearly dubious (ok, the MARKERS
> one isn't "clearly" dubious, since I have no idea why it got
> enabled, so I guess it would count as "unclearly dubious" then).

I agree that we have too many default-y options - we'll have a sweep
of all options and will default-disable the dubious (and unclearly
dubious) ones in a way that truly re-triggers user selection even if
the option is already enabled in the .config.

This particular new menu didnt actually change any of the existing
options or defaults: it just organized/grouped an already existing,
somewhat disorganized set of options and made it easier to disable
them summarily. Making _that_ default-n could have caused people to
accidentally disable a lot of options they had enabled in their
configs intentionally.

Ingo