On Thu, 2011-08-25 at 13:46 -0500, Christoph Lameter wrote: > > RISC cpus have instruction to construct complex atomic actions by the cpu > as I have shown before for ARM. Also, I thought this_cpu thing's were at best locally atomic. If you make them full blown atomic ops then even __this_cpu ops will have to be full atomic ops, otherwise: CPU0 CPU(1) this_cpu_inc(&foo); preempt_disable(); __this_cpu_inc(&foo); preempt_enable(); might step on each other's toes. -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
