On Friday 21 September 2012, Chunhe Lan wrote:
> On 08/10/2012 09:27 AM, Arnd Bergmann wrote:
> > On Friday 10 August 2012, Chunhe Lan wrote:
> >
> > cond_resched();
> > mdelay(ms);
> >
> > sets off alarm bells, and I would always replace that with msleep().
> I think that it does not replace with msleep().
> When the time of sleep is very short, program should not been scheduled
> in the context. Because it expends the more time.
>
A time measured in miliseconds is never "very short" for the scheduler,
a lot of things can happen during that time span. The code I quoted
also does not care too much about accuracy, otherwise it would adapt
the time in the mdelay based on whether the cond_resched() actually
schedules to another thread.
Arnd
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