From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matt Helsley Subject: [patch 4/4] Container Freezer: Skip frozen cgroups during power management resume Date: Tue, 24 Jun 2008 06:58:27 -0700 Message-ID: <20080624135824.821137922@us.ibm.com> References: <20080624135823.417569216@us.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: containers-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: containers-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: "Rafael J. Wysocki" Cc: Linux Containers , Linux-Kernel , Cedric Le Goater , Pavel Machek , Paul Menage , linux-pm-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org List-Id: containers.vger.kernel.org From: Cedric Le Goater Subject: [patch 4/4] Container Freezer: Skip frozen cgroups during power management resume When a system is resumed after a suspend, it will also unfreeze frozen cgroups. This patchs modifies the resume sequence to skip the tasks which are part of a frozen control group. Signed-off-by: Cedric Le Goater Signed-off-by: Matt Helsley Tested-by: Matt Helsley --- kernel/power/process.c | 4 ++++ 1 file changed, 4 insertions(+) Index: linux-2.6.26-rc5-mm2/kernel/power/process.c =================================================================== --- linux-2.6.26-rc5-mm2.orig/kernel/power/process.c +++ linux-2.6.26-rc5-mm2/kernel/power/process.c @@ -11,10 +11,11 @@ #include #include #include #include #include +#include /* * Timeout for stopping processes */ #define TIMEOUT (20 * HZ) @@ -133,10 +134,13 @@ static void thaw_tasks(bool nosig_only) continue; if (nosig_only && should_send_signal(p)) continue; + if (cgroup_frozen(p)) + continue; + thaw_process(p); } while_each_thread(g, p); read_unlock(&tasklist_lock); } -- From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760078AbYFXN7n (ORCPT ); Tue, 24 Jun 2008 09:59:43 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1759027AbYFXN6t (ORCPT ); Tue, 24 Jun 2008 09:58:49 -0400 Received: from e3.ny.us.ibm.com ([32.97.182.143]:46511 "EHLO e3.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758969AbYFXN6s (ORCPT ); Tue, 24 Jun 2008 09:58:48 -0400 Message-Id: <20080624135824.821137922@us.ibm.com> References: <20080624135823.417569216@us.ibm.com> User-Agent: quilt/0.46-1 Date: Tue, 24 Jun 2008 06:58:27 -0700 From: Matt Helsley To: "Rafael J. Wysocki" Cc: Paul Menage , Pavel Machek , Linux-Kernel , linux-pm@lists.linux-foundation.org, Linux Containers , Cedric Le Goater Subject: [patch 4/4] Container Freezer: Skip frozen cgroups during power management resume Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Cedric Le Goater Subject: [patch 4/4] Container Freezer: Skip frozen cgroups during power management resume When a system is resumed after a suspend, it will also unfreeze frozen cgroups. This patchs modifies the resume sequence to skip the tasks which are part of a frozen control group. Signed-off-by: Cedric Le Goater Signed-off-by: Matt Helsley Tested-by: Matt Helsley --- kernel/power/process.c | 4 ++++ 1 file changed, 4 insertions(+) Index: linux-2.6.26-rc5-mm2/kernel/power/process.c =================================================================== --- linux-2.6.26-rc5-mm2.orig/kernel/power/process.c +++ linux-2.6.26-rc5-mm2/kernel/power/process.c @@ -11,10 +11,11 @@ #include #include #include #include #include +#include /* * Timeout for stopping processes */ #define TIMEOUT (20 * HZ) @@ -133,10 +134,13 @@ static void thaw_tasks(bool nosig_only) continue; if (nosig_only && should_send_signal(p)) continue; + if (cgroup_frozen(p)) + continue; + thaw_process(p); } while_each_thread(g, p); read_unlock(&tasklist_lock); } --