Re: sched_autogroup interactivity patch for the desktop
On Tue, Nov 16, 2010 at 06:14:33PM +0100, Lennart Poettering wrote:
The kernel doesn't really have a notion of what a
"session" is (only the
audit subsystem kinda has), but if this grouping behaviour is supposed
to be bound to a session, then attaching it to a TTY is a pretty shitty
replacement.
Dhaval Giani pointed out to me that the same can be done from userspace
simply by creating a cgroup for each session in the cpu hierarchy. Turns
out systemd actually does pretty much that, except in the named systemd
hierarchy. It is trivial modification to create a group in both hierarchies.
That's not inherently a problem though, is it? Even if we have this
in-kernel, systemd can disable it at startup and implement its own
policy. It just means that the default case is (arguably) saner than it
currently is.
--
Matthew Garrett | mjg59(a)srcf.ucam.org