Re: [RFC/RFT PATCH v3] sched: automated per tty task groups

[Balbir Singh]

* Lennart Poettering <mzxreary@xxxxxxxxxxx> [2010-11-20 16:41:01]:

> On Sat, 20.11.10 09:55, Balbir Singh (balbir@xxxxxxxxxxxxxxxxxx) wrote:
> 
> > > However, I am not sure I like the idea of having pollable files like that,
> > > because in the systemd case I am very much interested in getting
> > > recursive notifications, i.e. I want to register once for getting
> > > notifications for a full subtree instead of having to register for each
> > > cgroup individually.
> > > 
> > > My personal favourite solution would be to get a netlink msg when a
> > > cgroup runs empty. That way multiple programs could listen to the events
> > > at the same time, and we'd have an easy way to subscribe to a whole
> > > hierarchy of groups.
> > 
> > The netlink message should not be hard to do if we agree to work on
> > it. The largest objections I've heard is that netlink implies
> > network programming and most users want to be able to script in
> > their automation and network scripting is hard.
> 
> Well, the notify_on_release stuff cannot be dropped anyway at this point
> in time, so netlink support would be an addition to, not a replacement for
> the current stuff that might be useful for scripting folks.

Agreed, we still need the old notify_on_release. Are you suggesting
that for scripting we use the old interface and newer tools use
netlink?

-- 
	Three Cheers,
	Balbir
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