Re: [PATCH 0/4] [GIT PULL] for tip/tracing/filters

[Ingo Molnar <mingo@elte.hu>]

* Steven Rostedt <rostedt@goodmis.org> wrote:

> On Sat, 4 Apr 2009, Tom Zanussi wrote:
> > On Fri, 2009-04-03 at 10:36 -0400, Steven Rostedt wrote:
> > 
> > I'm guessing the problem is that CONFIG_EVENT_TRACER wasn't selected but
> > should have been, because those tracers all now export events
> > (trace_event_types.h, included by trace_export.c).  I'm not sure this is
> > the right way to do it, but the patch below selects EVENT_TRACER if
> > TRACING is selected (a couple of the exported events belong to bprint
> > and print, which don't have a config option other than TRACING, so it
> > seems to belong there).
> > 
> > Signed-off-by: Tom Zanussi <tzanussi@gmail.com>
> > 
> > ---
> >  kernel/trace/Kconfig |    3 ++-
> >  1 files changed, 2 insertions(+), 1 deletions(-)
> > 
> > diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
> > index 8a41360..a061746 100644
> > --- a/kernel/trace/Kconfig
> > +++ b/kernel/trace/Kconfig
> > @@ -56,6 +56,7 @@ config TRACING
> >  	select TRACEPOINTS
> >  	select NOP_TRACER
> >  	select BINARY_PRINTF
> > +	select EVENT_TRACER
> 
> Yeah, we can do this.

Yeah - it has become more of a core facility thing, not a separate 
plugin.

That's the long-term healthy life-cycle for certain tracing 
functionality anyway: if it becomes so useful that all tracers want 
to make use of it, it becomes part of the standard infrastructure.

	Ingo