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

[Samuel Thibault]

Mike Galbraith, le Thu 18 Nov 2010 19:28:21 -0700, a écrit :
> On Fri, 2010-11-19 at 02:23 +0100, Samuel Thibault wrote:
> > Mike Galbraith, le Thu 18 Nov 2010 18:12:37 -0700, a écrit :
> > > 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.

Ah, ok.  I would have rather done this per fork call, as there may be a
difference between starting an application and starting a panel widget.

Samuel
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