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

[Mike Galbraith]

On Fri, 2010-11-19 at 02:23 +0100, Samuel Thibault wrote:
> Mike Galbraith, le Thu 18 Nov 2010 18:12:37 -0700, a Ãcrit :
> > I think that could be done with a fork flag with the same semantics as
> > reset on fork.  Once your task launcher (ala kdeinit) is tagged, it
> > launches task groups, the children lose that ability.
> 
> Mmm, even if always creating groups can have a slight overhead, you
> should probably not prevent userspace from deciding to do so when it
> knows it's appropriate.

I think you may have misunderstood.  The flag would be a hint that
userland can set to say "I want to fork off task groups", just as
SCHED_RESET_ON_FORK asks the kernel to reset a child's sched class and
nice level on fork.

	-Mike

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