cgroups: mount cgroups suggested by the kernel documentation

The linux kernel documentation suggests mounting a separate cgroup
hierarchy for each subsystem you want to control/monitor. This changes
the cgroups mounting code to do this.
This commit is contained in:
William Hubbs 2011-12-18 13:33:27 -06:00
parent 879e1acd5d
commit 461c69acdb

View File

@ -60,27 +60,36 @@ mount_misc()
eend $?
fi
fi
}
# Setup Kernel Support for cgroup
if [ -d /sys/fs/cgroup ]; then
if grep -qs cgroup /proc/filesystems && \
! mountinfo -q /sys/fs/cgroup; then
mount_cgroups()
{
if [ ! -e /proc/cgroups ]; then
return 0
fi
if [ -d /sys/fs/cgroup ] && ! mountinfo -q /sys/fs/cgroup; then
if grep -qs cgroup /proc/filesystems; then
ebegin "Mounting cgroup filesystem"
mount -n -t tmpfs -o nodev,noexec,nosuid \
cgroup /sys/fs/cgroup
mount -n -t tmpfs -o nodev,noexec,nosuid,mode=755 \
cgroup_root /sys/fs/cgroup
eend $?
fi
if ! mountinfo -q /sys/fs/cgroup/openrc; then
ebegin "creating openrc control group"
mkdir /sys/fs/cgroup/openrc
mount -n -t cgroup -o nodev,noexec,nosuid \
openrc /sys/fs/cgroup/openrc
echo 1 > /sys/fs/cgroup/openrc/notify_on_release
echo @LIBEXECDIR@/sh/cgroup-release-agent.sh \
> /sys/fs/cgroup/openrc/release_agent
eend
fi
fi
while read name hier groups enabled rest; do
case "${enabled}" in
1) mkdir /sys/fs/cgroup/${name}
mount -t cgroup -o nodev,noexec,nosuid,${name} \
${name} /sys/fs/cgroup/${name}
;;
esac
done < /proc/cgroups
# mkdir /sys/fs/cgroup/openrc
# mount -t cgroup \
# -o nodev,noexec,nosuid,name=openrc \
# openrc /sys/fs/cgroup/openrc
}
start()
@ -90,6 +99,11 @@ start()
retval=$?
if [ $retval -eq 0 ]; then
mount_misc
retval=$?
fi
if [ $retval -eq 0 ]; then
mount_cgroups
retval=$?
fi
return $retval
}