linux-kernel - Re: [git pull] latency tracer

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Message-Id: <20080209000503.f4eb2f02.akpm@linux-foundation.org>
Date:	Sat, 9 Feb 2008 00:05:03 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [git pull] latency tracer

On Sat, 9 Feb 2008 08:37:56 +0100 Ingo Molnar <mingo@...e.hu> wrote:

> 
> * Andrew Morton <akpm@...ux-foundation.org> wrote:
> 
> > On Fri, 8 Feb 2008 22:45:22 +0100 Ingo Molnar <mingo@...e.hu> wrote:
> > 
> > > Linus, please pull the latency tracer tree from:
> > > 
> > >    git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched.git
> > > 
> > > Find the shortlog below.
> > > 
> > > This is the latency tracer from -rt
> > 
> > I've never seen any of this code before and googling several of the 
> > patch titles turns up this email and nothing else.
> 
> there might be some confusion here. Google for "mcount tracing utility" 
> - there's 2270 hits. There's been 8 full series posted to lkml in the 
> past month:
> 
> ..
>
> we renamed the concept to 'ftrace' during pre-merge cleanups, perhaps 
> that is what caused you to not recognize this? (mcount is a confusing 
> name and ties it to a gcc feature while there's nothing gcc specific 
> about this concept.)
> 

Oh.  That clang you heard was a penny dropping.

I'd been kind of ignoring those patches assuming I had a couple more
months.

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