Messages in this thread | | | Date | Fri, 26 Jul 2002 14:53:44 +0530 | From | Kiran <> | Subject | Re: Patch 2.5.25: Ensure xtime_lock and timerlist_lock are on difft cachelines |
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On Fri, Jul 26, 2002 at 05:56:19PM +1000, Rusty Russell wrote: > In message <20020726125605.A2822@phreaker.net> you write: > > This patch was not meant to be a definitive fix for do_gettimeofday. > > I thought having diffrent locks on the same cacheline was bad. Atleast, > > I don't think there'd be any negative performance impact due to my patch. > > Pls correct me if I am wrong. > > Did you ever wonder why we don't declare spinlock to be ____cacheline_aligned?
Yep...and for long enough...(I think..)..or there'd have been an RFC or a stupid question to lkml sometime from me :)
> While it's probably justified in this case, you pay for it in a slight > increase in size... >
I thought you were of the opinion that "memory is cheap" ;-)
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