On Mon, Jul 13, 2015 at 8:27 AM, Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx> wrote: > percpu segments will likely not solve everything. I have a use-case > with dynamically allocated per-cpu ring buffer in user-space (lttng-ust) > which can be a challenge for percpu segments. Having a fast getcpu() > is a win in those cases. > Note that percpu segments allow userspace to trivially implement fast getcpu. For the record, Paul and I currently think the best solution is percpu segments + some variant of a restart-sequence API (we'll have a patch soon.) -- To unsubscribe from this list: send the line "unsubscribe linux-api" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
