Messages in this thread | | | Date | Thu, 6 Sep 2012 13:51:56 -0700 | From | "Paul E. McKenney" <> | Subject | Re: [PATCH tip/core/rcu 01/15] rcu: Add PROVE_RCU_DELAY to provoke difficult races |
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On Thu, Sep 06, 2012 at 04:38:32PM +0200, Peter Zijlstra wrote: > On Thu, 2012-08-30 at 11:56 -0700, Paul E. McKenney wrote: > > +#ifdef CONFIG_PROVE_RCU_DELAY > > + udelay(10); /* Make preemption more probable. */ > cond_resched(); /* for extra fun? */
The additional fun could include "scheduling while atomic", so I will pass. ;-)
(The problem is that __rcu_read_unlock() can be called with interrupts disabled, among other things.)
Thanx, Paul
> > +#endif /* #ifdef CONFIG_PROVE_RCU_DELAY */ > >
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