On Thu, Jun 5, 2014 at 2:50 PM, Peter Zijlstra <[email protected]> wrote: > On Thu, Jun 05, 2014 at 12:16:01PM +0100, Matt Fleming wrote: >> On 5 June 2014 11:19, Stephane Eranian <[email protected]> wrote: >> > How would you know that you have a uniform workload from inside >> > the kernel? >> >> That's what I'm asking you ;-) >> >> >> Does cpu_sibling_map not give you some indication of whether HT is >> >> enabled? I think the topology_thread_cpumask() is the topology API for >> >> that. But I could most definitely be wrong. Hopefully someone on the >> >> Cc list will know. >> >> >> > Remember trying some of that, but when perf_event is initialized, those >> > masks are not yet setup properly. >> >> Oh, bummer. > > So we init perf very early to get nmi-watchdog up and running, but > there's no reason you cannot register a second initcall later and flip > the switch from it there.
and what initcall would that be? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
