Re: [PATCH] Remove timer frequency choice if tickless is enabled

From: Ingo Molnar
Date: Mon Jan 14 2008 - 03:26:13 EST



(lkml Cc:-ed)

* Carlos R. Mafra <crmafra2@xxxxxxxxx> wrote:

> choice
> prompt "Timer frequency"
> + depends on !NO_HZ
> default HZ_250
> help
> Allows the configuration of the timer frequency. It is customary

we are not there yet to be able to do this. With NO_HZ the tick is only
disabled when we go idle - but it still runs (and we rely on it, for
example in the scheduler code) while we are non-idle. Peter Zijlstra is
working on the 'high-res scheduler tick' feature to remove the scheduler
dependencies.

Ingo
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