On Fri, Sep 05, 2014 at 10:31:49AM -0700, Linus Torvalds wrote: > So quite frankly, the whole perf_pmu_migrate_context() thing looks > completely and fundamentally broken.
Yes, agreed. We can go play very nasty games, but fundamentally agreed. > Or even just say: "if somebody takes down a CPU with existing uncore > events, those events are now effectively dead". Don't try to migrate > them, don't try to create new events on another CPU, just let it go. > The CPU is down, the events are inactive. > > Keep it simple. Not the current completely broken thing that clearly > doesn't honor the actual real rules for "event->ctx". Because the > current rules are effectively that event->ctx is a constant over the > whole lifetime of the event. Agreed? I like this best, I've never really been a supporter of hotplug games. -- 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/
