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Date: Fri, 3 Aug 2012 13:31:44 -0700
From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@kernel.org>, Frederic Weisbecker <fweisbec@gmail.com>,
        LKML <linux-kernel@vger.kernel.org>,
        Alessio Igor Bogani <abogani@kernel.org>,
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        Stephen Hemminger <shemminger@vyatta.com>,
        Sven-Thorsten Dietrich <thebigcorporation@gmail.com>,
        Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH 1/5] code_domain: New code domain tracking susbsystem
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On Fri, Aug 03, 2012 at 04:09:39PM -0400, Steven Rostedt wrote:
> On Fri, 2012-08-03 at 21:45 +0200, Ingo Molnar wrote:
> > * Frederic Weisbecker <fweisbec@gmail.com> wrote:
> > 
> > > Create a new subsystem that handles the probing on kernel 
> > > boundaries to keep track of the transitions between code 
> > > domains with two basic initial domains: user or kernel.
> > 
> > To do a bit more bike shed painting, I'd call it "context 
> > tracking" - user mode, kernel mode (guest mode, etc.).
> > 
> > The term 'code domain' would bring up blank stares from most 
> > kernel developers, me thinks.
> 
> Heh, that would be a second new term I heard this week for context.
> Earlier, I noticed that Paul McKenney called it 'levels'. So now there's
> four names:
> 
> user/kernel context
> user/kernel state
> user/kernel level
> user/kernel domain
> 
> And we could probably add a fifth:
> 
> user/kernel mode

Plus:

user/kernel space

> ;-)

Then there is "supervisor", "system", "privileged", and who knows what
all else for "kernel".  And "application" and "problem" and probably
others for "user".

							Thanx, Paul