Re: [PATCH 6/6] Makes procs file writable to move all threads by tgid at once

Paul E. McKenney
2009-08-06T15:37:58Z

On Thu, Aug 06, 2009 at 05:24:46PM +0200, Peter Zijlstra wrote:
> On Thu, 2009-08-06 at 08:19 -0700, Paul E. McKenney wrote:
> >
> > > So yes, putting a rwsem in there sounds fine, you're already bouncing
> > > it.
> >
> > If the critical section is small, is an rwsem really better than a
> > straight mutex?
>
> Well, my understanding was that it needed to surround much, if not all,
> of clone(). That's a rather large bit of code.

That would indeed justify an rwsem! ;-)

Thanx, Paul