On Mon, Jan 24, 2011 at 09:39:03PM +0100, Peter Zijlstra wrote:

On Mon, 2011-01-24 at 21:34 +0100, Frederic Weisbecker wrote:

quoted

But instead of a global tracing ABI number, I would rather suggest
one number per tracepoint subsystem (sched, power, etc...).

Ideally it would be per event, but sometimes those events tend to be
renamed or a whole tracepoint subsystem refactored (see workqueue
lately). Hence it might be better per subsystem. 

What's wrong with what we have? the /format file is pretty unique to
function as a version number of you use a hash over it.

Yeah we could in fact use it to find if fields have been added,
removed. Right, all in one that looks enough to me.