Messages in this thread | | | Date | Mon, 15 Nov 2010 07:57:10 -0600 (CST) | From | Christoph Lameter <> | Subject | Re: [PATCH] atomic: add atomic_inc_not_zero_hint() |
| |
On Sat, 13 Nov 2010, Paul E. McKenney wrote:
> On Fri, Nov 12, 2010 at 01:14:12PM -0600, Christoph Lameter wrote: > > > > prefetchw() would be too much overhead? > > No idea. Where do you believe that prefetchw() should be added?
It is another way to get an exclusive cache line for situations like this. No need to give a hint.
| |