On Mon, 21 Nov 2016 10:37:00 -0800 Andi Kleen <a...@firstfloor.org> wrote:
> Ok so how should tracing in idle code work then in your opinion? As I suggested already. If we can get a light weight rcu_is_watching() then we can do the rcu_idle work when needed, and not when we don't need it. Sure this will add more branches, but that's still cheaper than popf. -- Steve
