On Thu, 2008-07-24 at 02:32 -0700, David Miller wrote: > From: Peter Zijlstra <peterz@xxxxxxxxxxxxx> > Date: Thu, 24 Jul 2008 11:27:05 +0200 > > > Well, not only lockdep, taking a very large number of locks is expensive > > as well. > > Right now it would be on the order of 16 or 32 for > real hardware. > > Much less than the scheduler currently takes on some > of my systems, so currently you are the pot calling the > kettle black. :-) One nit, and then I'll let this issue rest :-) The scheduler has a long lock dependancy chain (nr_cpu_ids rq locks), but it never takes all of them at the same time. Any one code path will at most hold two rq locks. -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
