Re: (BUG?) round_jiffies() is non-monotonic on SMP

[Arjan van de Ven]

On Sat, 1 Nov 2008 22:36:30 -0400 (EDT)
Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> 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
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