On Thu, Apr 09, 2015 at 08:28:41AM +0200, Ingo Molnar wrote: > Btw., does cpu_base->active_bases even make sense? hrtimer bases are > fundamentally percpu, and to check whether there are any pending > timers is a very simple check: > > base->active->next != NULL >
Yeah, that's 3 pointer dereferences from cpu_base, iow you traded a single bit test on an already loaded word for 3 potential cacheline misses. -- 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/
