Messages in this thread | | | Date | Sat, 1 Nov 2008 19:43:57 -0700 | From | Arjan van de Ven <> | Subject | Re: (BUG?) round_jiffies() is non-monotonic on SMP |
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On Sat, 1 Nov 2008 22:36:30 -0400 (EDT) Alan Stern <stern@rowland.harvard.edu> wrote:
> On Sat, 1 Nov 2008, Arjan van de Ven wrote: > > > > Come to think of it, is there any good reason why > > > round_jiffies() doesn't always round up? It seems a lot safer. > > > > at the time folks had concerns about making a big error in that > > direction... > > All right then. Would it be preferable to add a new > round_jiffies_up() routine, or to change round_jiffies() so that it > never rounds down?
I'd prefer the former. But to be honest.. I would even more prefer the use of range timers ;) They're in 2.6.28-rc now ... and more power friendly than rounded timers (although I will readily admit that rounding is just easier)
-- Arjan van de Ven Intel Open Source Technology Centre For development, discussion and tips for power savings, visit http://www.lesswatts.org
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