Paul Menage wrote: > Allow cgroup hierarchies to be created with no bound subsystems > > This patch removes the restriction that a cgroup hierarchy must have > at least one bound subsystem. The mount option "none" is treated as > an explicit request for no bound subsystems. > > A hierarchy with no subsystems can be useful for plain task tracking, > and is also a step towards the support for multiply-bindable > subsystems. > > As part of this change, the hierarchy id is no longer calculated from > the bitmask of subsystems in the hierarchy (since this is not > guaranteed to be unique) but is allocated via an ida. Reference > counts on cgroups from css_set objects are now taken explicitly one > per hierarchy, rather than one per subsystem. > > Example usage: > > mount -t cgroup -o none,name=foo cgroup /mnt/cgroup > > Based on the "no-op"/"none" subsystem concept proposed by > kamezawa.hiroyu@xxxxxxxxxxxxxx > > Signed-off-by: Paul Menage <menage@xxxxxxxxxx> > Reviewed-by: Li Zefan <lizf@xxxxxxxxxxxxxx> _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/containers
