Messages in this thread | | | Date | Thu, 6 Mar 2008 11:11:45 -0800 | From | Randy Dunlap <> | Subject | Re: [PATCH] Add cgroup support for enabling controllers at boot time |
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On Fri, 07 Mar 2008 00:29:52 +0530 Balbir Singh wrote:
> From: Paul Menage <menage@google.com> > > 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 <menage@google.com> > Signed-off-by: Balbir Singh <balbir@linux.vnet.ibm.com> > --- > > 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?
> + 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
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