Updated trace-cmd package

[Seth Forshee]

On Tue, Oct 29, 2013 at 11:39:58AM -0700, Andy Whitcroft wrote:
> On Mon, Oct 28, 2013 at 11:31:29AM -0500, Seth Forshee wrote:
> > Our trace-cmd package has been woefully out of date for quite some time
> > now. Last week I undertook the task of trying to package up the most
> > recent upstream release (with a lot of help from Kamal Mostafa - thanks
> > Kamal!). It's now sitting in Debian's "new" queue, so with a little luck
> > it should work its way into Ubuntu this cycle.
> > 
> > In the mean time I've uploaded trace-cmd v2.2.1 to my PPA at
> > ppa:sforshee/trace-cmd for anyone who wants to use the newer version
> > right away.
> 
> Great!  What does it do :)

Basically it's a front end for ftrace. http://lwn.net/Articles/410200/
is a good place to start learning about it.

Seth