Re: [PATCH] Run timers as softirqs, not tasklets

From: Ingo Molnar (mingo@elte.hu)
Date: Sun Nov 17 2002 - 14:23:08 EST


On Sun, 17 Nov 2002, Matthew Wilcox wrote:

> Seems to me that the timer code is attempting to replicate the softirq
> characteristics at the tasklet level, which is a little pointless.
> This patch converts timers to be a first-class softirq citizen.

i agree with your patch.

> Ingo, was there a reason you didn't do it this way to begin with?

because there was an interim state of the timer code in where we still had
a global timer context (ie. a timer tasklet). Only later did it get
converted to completely unsynchronized per-CPU tasklets. Which indeed is
what softirqs are :-)

        Ingo

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