On Mon, Jan 19, 2009 at 7:07 PM, KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> wrote: > In my understanding, "sending signal" requires some protocol/order in userland. > > Assume that users has to send signal in following order > Application A -> Application B -> Application C..... > and may have problems sending signals in following order > Application B -> Application A ->..... In a case like that, a user would have to do their own signal sending rather than letting the "signal" subsystem handle it. The signal subsystem is more useful for doing things like sending less-refined signals like SIGSTOP or SIGKILL to all tasks in a cgroup. > multilply-mounted means its own hierachy can be created per mount point ? Yes. > If so, signal subsystem can be used instead of noop. Supporting mounting a subsystem in multiple different hierarchies would pretty much involve supporting mounting a hierarchy with no subsystems (at least in the way I envisaged it), so you wouldn't need any subsystem in that case if you were just trying to do grouping. Paul _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/containers
