From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752154Ab2JNJ11 (ORCPT ); Sun, 14 Oct 2012 05:27:27 -0400 Received: from shadbolt.e.decadent.org.uk ([88.96.1.126]:43898 "EHLO shadbolt.e.decadent.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751537Ab2JNJ10 (ORCPT ); Sun, 14 Oct 2012 05:27:26 -0400 Message-ID: <1350206827.4832.74.camel@deadeye.wl.decadent.org.uk> Subject: Re: stable backport: sched: Fix migration thread runtime bogosity From: Ben Hutchings To: Steven Rostedt Cc: LKML , stable , Greg Kroah-Hartman , Mike Galbraith , Peter Zijlstra , Thomas Gleixner Date: Sun, 14 Oct 2012 10:27:07 +0100 In-Reply-To: <1349897043.24256.63.camel@gandalf.local.home> References: <1349897043.24256.63.camel@gandalf.local.home> Content-Type: multipart/signed; micalg="pgp-sha512"; protocol="application/pgp-signature"; boundary="=-2SLqQKny0SnS+oYiSPNB" X-Mailer: Evolution 3.4.3-1 Mime-Version: 1.0 X-SA-Exim-Connect-IP: 77.75.106.1 X-SA-Exim-Mail-From: ben@decadent.org.uk X-SA-Exim-Scanned: No (on shadbolt.decadent.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --=-2SLqQKny0SnS+oYiSPNB Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Wed, 2012-10-10 at 15:24 -0400, Steven Rostedt wrote: > Greg, Ben, >=20 > Can you add this commit to the stable branches. Without it, the > migration thread's accounting is just totally screwed up: >=20 > By running a simple shell while loop along with a ps loop, top shows: >=20 > PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND = =20 > 17 root RT 0 0 0 0 S 9999.0 0.0 9:27.50 migration/= 3 =20 > 13 root RT 0 0 0 0 S 128.2 0.0 9:50.23 migration/2= =20 > 2805 root 20 0 105m 1904 1416 S 13.9 0.1 0:06.69 bash = =20 > 4090 root 20 0 105m 1904 1416 S 2.0 0.1 0:00.90 bash = =20 > 2773 root 20 0 85484 3372 2620 S 0.3 0.2 0:00.03 sshd = =20 >=20 >=20 > For 3.4, the commit can be directly cherry picked: >=20 > commit 8f6189684eb4e85e6c593cd710693f09c944450a > Author: Mike Galbraith > Date: Sat Aug 4 05:44:14 2012 +0200 >=20 > sched: Fix migration thread runtime bogosity >=20 > Below is a backport for 3.2. [...] Queued up for 3.2, thanks. Ben. --=20 Ben Hutchings Always try to do things in chronological order; it's less confusing that way. --=-2SLqQKny0SnS+oYiSPNB Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQIVAwUAUHqFa+e/yOyVhhEJAQqMiRAAy7nTFReXD/fSAeaBD1nvc9qRn9zbsWrR tdi4hFXwernp9904ElOMArRcWjhPwyXuVsU5pztMM6It6jpEXXkdgNfDw6pdr73z BzNzFcDPhTPoxTi2MLE4DRmddINMj3Q1rFHQV44ZLJBX6A6leIVI0+3lfg3OLEfT eruk5YQyDrFgOvUTrI/YOj+obPNVr+wMnNqcqUMNIGGcubTXZTZJVazm5XSwxP2O OWWlzhGibWYOEA/adS1FXienoDEntbyzNtZNXFmOto2eH4ktPaLQc8Hc/VgOqkhj 8deTGZve16T3yn+bHFs8S0a53xw7lraDHSrhHGLgfaTiGdUt/dkMUaoGfENeea+l 2VFMg6aiqgbtS6Mk+6OrAxIyZH2IZqZ0Ngv43SvtWfeFc/8HjPmSaTWB029WR9wa c/tJuJSRzDbD4lv51PlEb2viNE/vFqr7/NP3QW3fRCfyeN2HW+WPO6AKE4dG/uRf AZksaTyosYupVlAnDP7e3iCkBiYvtk+nAn6UXV9R+VB5i8SiOoI1W0iZ/xmNeat0 fndidtkJmz9GR9btyLaXyvIxC9dgCBYAT5duhsjiFUSwjLWMAVn/6S994RGOBsm5 09nLgd7+IisQeULI+9LeMueAomibbqVBONSqFWCgZ6KVxmp8XXX2QH7E3MI3qdhU 7uMe1n+297Y= =gh7U -----END PGP SIGNATURE----- --=-2SLqQKny0SnS+oYiSPNB--