Re: move gfs2 tracepoints to inclue/trace/events dir

[Ingo Molnar <mingo@elte.hu>]

* Christoph Hellwig <hch@infradead.org> wrote:

> On Fri, Oct 09, 2009 at 12:01:16PM -0400, Jason Baron wrote:
> > hi,
> > 
> > I'd like to move the gfs2 tracepoints to the the common
> > include/trace/events directory along with all of the other trace events.
> > It makes understanding what tracepoints are available easier, and I see
> > no reason why gfs2 should be different. For example, 'ext4.h' is already
> > in the include/trace/events directory.
> 
> Folks, no.  Drivers and filesystems should be as self-contained as 
> possible.  include/trace/ is an extremly bad idea for everything 
> that's not actually global kernel functionality.  There's a reason all 
> other fs headers have moved out of include/linux, too.

Tracing is special though - having global visibility of different 
tracepoints in one place helps keeping the set of tracepoints more 
consistent.

Self-contained tracepoints are fine too, but only as a second-tier 
choice for out-of-tree code or for subsystems that prefer that.

	Ingo