Re: [PATCH] fix nanosleep() granularity bumps

From: Andrew Morton (akpm@digeo.com)
Date: Wed Mar 19 2003 - 04:42:30 EST


george anzinger <george@mvista.com> wrote:
>
> The attached patch is for 2.5.65. As of this moment, the bk patch has
> not been posted to the snapshots directory. I will wait for that to
> update.

Don't use the snapshots directory. Use

        http://www.kernel.org/pub/linux/kernel/v2.5/testing/cset/

It is more up to date.

> For what its worth, can someone explain how the add_timer call from
> run_timers was causing a problem. The code looks right to me, unless
> the caller is so nasty as to continue to do the same thing (which
> would loop forever).

That was the problem.

> In this case, the simple fix is to bump the
> base->timer_jiffies at the beginning of the loop rather than the end.
> This would cause the new timer to be put in the next jiffie instead
> of the current one AND it is free!

Didn't think of that - I just ported up Andrea's fix.

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