On Thu, Nov 29, 2012 at 10:57:20AM -0800, Kent Overstreet wrote: > On Thu, Nov 29, 2012 at 10:45:04AM -0800, Andi Kleen wrote: > > Kent Overstreet <koverstr...@google.com> writes: > > > > > This implements a refcount with similar semantics to > > > atomic_get()/atomic_dec_and_test(), that starts out as just an atomic_t > > > but dynamically switches to per cpu refcounting when the rate of > > > gets/puts becomes too high. > > > > This will only work if you put on the same CPU as you get, right? > > Nope, no such restriction.
I don't see how you ensure you're doing the __this_cpu_dec on the same CPU as you did the get -Andi -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
