Re: [PATCH repost] sched: export sched_set/getaffinity to modules

[Sridhar Samudrala]

On 7/1/2010 7:55 AM, Peter Zijlstra wrote:
> On Thu, 2010-07-01 at 16:53 +0200, Tejun Heo wrote:
>    
> > Hello,
> >
> > On 07/01/2010 04:46 PM, Oleg Nesterov wrote:
> >      
> > > > It might be a good idea to make the function take extra clone flags
> > > > but anyways once created cloned task can be treated the same way as
> > > > other kthreads, so nothing else needs to be changed.
> > > >          
> > > This makes kthread_stop() work. Otherwise the new thread is just
> > > the CLONE_VM child of the caller, and the caller is the user-mode
> > > task doing ioctl() ?
> > >        
> > Hmmm, indeed.  It makes the attribute inheritance work but circumvents
> > the whole reason there is kthreadd.
> >      
> I thought the whole reason there was threadd was to avoid the
> inheritance? So avoiding the avoiding of inheritance seems like the goal
> here, no?
>    
I think so. Does  it (Tejun's kthread_clone() patch) also  inherit the 
cgroup of the caller? or do we still need the explicit
call to attach the thread to the current task's cgroup?

I am on vacation next week and cannot look into this until Jul 12. Hope 
this will be resoved by then.
If not, i will look into after i am back.

Thanks
Sridhar

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