Li Zefan wrote: > KAMEZAWA Hiroyuki wrote: >> On Fri, 22 Oct 2010 16:12:25 +0800 >> Li Zefan <lizf@xxxxxxxxxxxxxx> wrote: >> >>> Provide a usage example, and update the bind() callback API. >>> >>> Signed-off-by: Li Zefan <lizf@xxxxxxxxxxxxxx> >>> --- >>> Documentation/cgroups/cgroups.txt | 26 +++++++++++++++++--------- >>> 1 files changed, 17 insertions(+), 9 deletions(-) >>> >>> diff --git a/Documentation/cgroups/cgroups.txt b/Documentation/cgroups/cgroups.txt >>> index 190018b..5b5382a 100644 >>> --- a/Documentation/cgroups/cgroups.txt >>> +++ b/Documentation/cgroups/cgroups.txt >>> @@ -363,17 +363,23 @@ Note this will add ns to the hierarchy but won't remove memory or >>> cpuset, because the new options are appended to the old ones: >>> # mount -o remount,ns /dev/cgroup >>> >>> +For some subsystems you can bind them to a mounted hierarchy or >>> +remove them from it, even if there're sub-cgroups in it: >>> +# mount -t cgroup -o freezer hier1 /dev/cgroup >>> +# echo $$ > /dev/cgroup/my_cgroup >>> +# mount -o freezer,cpuset hier1 /dev/cgroup >>> +(failed) >>> +# mount -o freezer,cpuacct hier1 /dev/cgroup >>> +# mount -o cpuacct hier1 /dev/cgroup >>> + >>> +Note cpuacct should be sit in the default hierarchy before remount. >>> + >> Can this operation be used with noop cgroup ? >> (IOW, perf cgroup can be attached to noop cgroup ?) >> > > Yes, you can. I've tested it. But, wait. It stuck when I moved a task from a sub-cgroup to the root. Need to dig more.. _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/containers
