Messages in this thread | | | Date | Mon, 29 Jun 2015 17:14:02 +0200 | From | Peter Zijlstra <> | Subject | Re: [RFC][PATCH 05/13] percpu-rwsem: Optimize readers and reduce global impact |
| |
On Mon, Jun 29, 2015 at 11:12:20AM -0400, Tejun Heo wrote: > Hello, Peter. > > On Mon, Jun 29, 2015 at 11:32:19AM +0200, Peter Zijlstra wrote: > > Agreed, luckily we already have the infrastructure for this, something > > like so? > > > > --- a/include/linux/percpu-defs.h > > +++ b/include/linux/percpu-defs.h > > @@ -287,6 +287,16 @@ do { \ > > preempt_enable(); \ > > } while (0) > > > > +#define per_cpu_sum(var) \ > > +({ \ > > + typeof(var) __sum = 0; \ > > + int cpu; \ > > Why not __cpu?
I've no idea, __cpu is indeed more consistent, consider it changed.
| |