On Tue, Sep 24, 2013 at 11:52:07AM +1000, Benjamin Herrenschmidt wrote: > So if that holds, we have a solid way to do per-cpu. On one side, I tend > to think that r13 being task/thread/thread_info is probably a better > overall choice, I'm worried that going in a different direction than x86 > means generic code will get "tuned" to use per-cpu for performance > critical stuff rather than task/thread/thread_info in inflexible ways.
The plus side of per-cpu over per-task is that one typically has a lot less cpus than tasks. Also, its far easier/cheaper to iterate cpus than it is to iterate tasks. -- 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/