From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <47D086D3.20205@cn.fujitsu.com> Date: Fri, 07 Mar 2008 09:05:39 +0900 From: Li Zefan MIME-Version: 1.0 Subject: Re: [PATCH] Add cgroup support for enabling controllers at boot time References: <20080306185952.23290.49571.sendpatchset@localhost.localdomain> <20080306111145.27efc74c.randy.dunlap@oracle.com> In-Reply-To: <20080306111145.27efc74c.randy.dunlap@oracle.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Randy Dunlap Cc: Balbir Singh , Paul Menage , Andrew Morton , Pavel Emelianov , Hugh Dickins , Sudhir Kumar , YAMAMOTO Takashi , linux-kernel@vger.kernel.org, taka@valinux.co.jp, linux-mm@kvack.org, David Rientjes , KAMEZAWA Hiroyuki List-ID: Randy Dunlap wrote: > On Fri, 07 Mar 2008 00:29:52 +0530 Balbir Singh wrote: > >> From: Paul Menage >> >> The effects of cgroup_disable=foo are: >> >> - foo doesn't show up in /proc/cgroups >> - foo isn't auto-mounted if you mount all cgroups in a single hierarchy >> - foo isn't visible as an individually mountable subsystem >> >> As a result there will only ever be one call to foo->create(), at init >> time; all processes will stay in this group, and the group will never >> be mounted on a visible hierarchy. Any additional effects (e.g. not >> allocating metadata) are up to the foo subsystem. >> >> This doesn't handle early_init subsystems (their "disabled" bit isn't >> set be, but it could easily be extended to do so if any of the early_init >> systems wanted it - I think it would just involve some nastier parameter >> processing since it would occur before the command-line argument parser >> had been run. >> >> [Balbir added Documentation/kernel-parameters updates] >> >> Signed-off-by: Paul Menage >> Signed-off-by: Balbir Singh >> --- >> >> Documentation/kernel-parameters.txt | 4 ++++ >> include/linux/cgroup.h | 1 + >> kernel/cgroup.c | 27 +++++++++++++++++++++++++-- >> 3 files changed, 30 insertions(+), 2 deletions(-) >> >> diff -puN Documentation/kernel-parameters.txt~cgroup_disable Documentation/kernel-parameters.txt >> --- linux-2.6.25-rc4/Documentation/kernel-parameters.txt~cgroup_disable 2008-03-06 17:57:32.000000000 +0530 >> +++ linux-2.6.25-rc4-balbir/Documentation/kernel-parameters.txt 2008-03-06 18:00:32.000000000 +0530 >> @@ -383,6 +383,10 @@ and is between 256 and 4096 characters. >> ccw_timeout_log [S390] >> See Documentation/s390/CommonIO for details. >> >> + cgroup_disable= [KNL] Enable disable a particular controller > > So it can enable or disable? or the text has extra text? > don't think so, should be "Disable a particular controller" >> + Format: {name of the controller} >> + See /proc/cgroups for a list of compiled controllers >> + >> checkreqprot [SELINUX] Set initial checkreqprot flag value. >> Format: { "0" | "1" } >> See security/selinux/Kconfig help text. > > > --- > ~Randy > > -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org