Re: [PATCH v2] introduce atomic_pointer to fix a race condition in cancelable mcs spinlocks

Paul E. McKenney
2014-06-03T00:28:30Z

On Mon, Jun 02, 2014 at 04:53:44PM -0700, Eric Dumazet wrote:
> On Mon, 2014-06-02 at 16:17 -0700, Paul E. McKenney wrote:
>
> > But given that I already have preemption disabled and given that
> > __srcu_read_lock() is not to be used by irq handlers, I should be able to
> > use __this_cpu_inc(), correct? Just to avoid unnecessary irq disabling
> > on non-x86 platforms...
>
> Absolutely, __this_cpu_inc() is OK here.

Cool, giving it a test...

Thanx, Paul