From: Frederic Weisbecker <fweisbec@gmail.com>
To: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: Steven Rostedt <rostedt@goodmis.org>,
Ingo Molnar <mingo@kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
Alessio Igor Bogani <abogani@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Avi Kivity <avi@redhat.com>, Chris Metcalf <cmetcalf@tilera.com>,
Christoph Lameter <cl@linux.com>,
Geoff Levand <geoff@infradead.org>,
Gilad Ben Yossef <gilad@benyossef.com>,
Hakan Akkan <hakanakkan@gmail.com>,
"H. Peter Anvin" <hpa@zytor.com>, Kevin Hilman <khilman@ti.com>,
Max Krasnyansky <maxk@qualcomm.com>,
Peter Zijlstra <peterz@infradead.org>,
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
Date: Fri, 3 Aug 2012 23:04:10 +0200 [thread overview]
Message-ID: <20120803210407.GB1894@somewhere.redhat.com> (raw)
In-Reply-To: <20120803203144.GJ2474@linux.vnet.ibm.com>
On Fri, Aug 03, 2012 at 01:31:44PM -0700, Paul E. McKenney wrote:
> 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".
Hehe.
Ok I agree that domain already has a biased meaning in the kernel.
So I'm going to respin with code_context_tracking.
If anybody oppose, please raise your hand.
next prev parent reply other threads:[~2012-08-03 21:04 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-03 15:02 [RFC PATCH 0/5] cputime: Generic virtual based cputime accounting v2 Frederic Weisbecker
2012-08-03 15:02 ` [PATCH 1/5] code_domain: New code domain tracking susbsystem Frederic Weisbecker
2012-08-03 18:51 ` Paul E. McKenney
2012-08-03 19:45 ` Ingo Molnar
2012-08-03 20:09 ` Steven Rostedt
2012-08-03 20:31 ` Paul E. McKenney
2012-08-03 21:04 ` Frederic Weisbecker [this message]
2012-08-03 15:02 ` [PATCH 2/5] cputime: Don't allow virtual and irq finegrained cputime accounting simultaneously Frederic Weisbecker
2012-08-03 15:02 ` [PATCH 3/5] cputime: Allow dynamic switch between tick/virtual based cputime accounting Frederic Weisbecker
2012-08-03 15:02 ` [PATCH 4/5] cputime: Rename account_system_vtime to account_vtime Frederic Weisbecker
2012-08-03 15:02 ` [PATCH 5/5] cputime: Generic on-demand virtual cputime accounting Frederic Weisbecker
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