kernel/timer.c

[Darin.Johnson at nokia.com]

> From: ext Joakim Tjernlund [mailto:joakim.tjernlund at lumentis.se]
> Sent: Friday, April 11, 2003 7:39 AM
>
> hmm, why not just:
>    expire = timespec_to_jiffies(&t);
> if tv_sec and tv_sec are zero, do you need to sleep at all?

Trying to sleep for 0 time periods is difficult in many timer systems,
and this is probably true for Linux also. Ie, time "t" has already
passed by the time this routine is executed, but time "t+1" has not.

The decision is whether to make the delay 1 in this case, or to just
schedule the next ready thread.

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