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From: Ingo Molnar <mingo@kernel.org>
To: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	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>,
	Daniel Lezcano <daniel.lezcano@linaro.org>,
	Geoff Levand <geoff@infradead.org>,
	Gilad Ben Yossef <gilad@benyossef.com>,
	Hakan Akkan <hakanakkan@gmail.com>, Kevin Hilman <khilman@ti.com>,
	Max Krasnyansky <maxk@qualcomm.com>,
	"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
	Stephen Hemminger <shemminger@vyatta.com>,
	Steven Rostedt <rostedt@goodmis.org>,
	Sven-Thorsten Dietrich <thebigcorporation@gmail.com>,
	Martin Schwidefsky <schwidefsky@de.ibm.com>,
	Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	"Luck,Tony" <tony.luck@intel.com>
Subject: Re: [RFC GIT PULL] nohz: Basic cputime accounting for adaptive tickless
Date: Thu, 14 Jun 2012 13:16:38 +0200	[thread overview]
Message-ID: <20120614111638.GA16676@gmail.com> (raw)
In-Reply-To: <20120614111241.GA16848@somewhere>


* Frederic Weisbecker <fweisbec@gmail.com> wrote:

> On Thu, Jun 14, 2012 at 11:07:09AM +0200, Peter Zijlstra wrote:
> > On Wed, 2012-06-13 at 18:19 +0200, Frederic Weisbecker wrote:
> > > Ingo, Thomas,
> > > 
> > > This starts the basic code that allow accounting of cputime spent tickless
> > > outside idle, which is a first step to prepare for the adaptive nohz
> > > infrastructure.
> > > 
> > > I hope we can set a tree in -tip for that. If you're fine with it
> > > this is pullable from:
> > 
> > There's a number of architecture that already does fine grained
> > user/kernel time accounting on syscall boundaries etc.. s390, powerpc
> > and ia64.
> > 
> > You're now adding a 3rd way of accounting user/kernel time.. I'm not
> > much looking fwd to that..
> 
> You're right, I should have looked into CONFIG_VIRT_CPU_ACCOUNTING sooner
> and see if I can reuse it.
> 
> I'll try something with that.

Maybe sanitize all the variants under a single set of 
wrappers/callbacks?

Thanks,

	Ingo

  reply	other threads:[~2012-06-14 11:16 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-06-13 16:19 [RFC GIT PULL] nohz: Basic cputime accounting for adaptive tickless Frederic Weisbecker
2012-06-13 16:19 ` [PATCH 1/7] nohz: Add more comment about CONFIG_NO_HZ Frederic Weisbecker
2012-06-13 16:19 ` [PATCH 2/7] nohz: Introduce adaptive nohz config Frederic Weisbecker
2012-06-13 16:19 ` [PATCH 3/7] nohz: Generalize tickless cpu time accounting Frederic Weisbecker
2012-06-13 16:19 ` [PATCH 4/7] nohz: Account user and system times in adaptive nohz mode Frederic Weisbecker
2012-06-13 16:19 ` [PATCH 5/7] x86: Syscall hooks for " Frederic Weisbecker
2012-06-13 16:19 ` [PATCH 6/7] x86: Add adaptive tickless hooks on do_notify_resume() Frederic Weisbecker
2012-06-13 16:19 ` [PATCH 7/7] x86: Exception hooks for adaptive tickless Frederic Weisbecker
2012-06-13 16:35 ` [RFC GIT PULL] nohz: Basic cputime accounting " Frederic Weisbecker
2012-06-14  9:07 ` Peter Zijlstra
2012-06-14  9:10   ` Peter Zijlstra
2012-06-14 11:12   ` Frederic Weisbecker
2012-06-14 11:16     ` Ingo Molnar [this message]
2012-06-14 11:21       ` Thomas Gleixner
2012-06-14 11:22         ` Frederic Weisbecker
2012-06-14 12:48           ` Martin Schwidefsky
2012-06-14 13:04             ` Frederic Weisbecker
2012-06-14 14:36               ` Ingo Molnar
2012-06-14 17:34                 ` Frederic Weisbecker
2012-06-15 12:13                   ` Ingo Molnar
2012-06-14 13:42             ` Frederic Weisbecker
2012-06-14 15:18               ` Martin Schwidefsky
2012-06-15 17:37                 ` Frederic Weisbecker
2012-06-18 10:46                   ` Martin Schwidefsky

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