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DateMon, 14 Jan 2008 09:25:43 +0100
FromIngo Molnar <>
SubjectRe: [PATCH] Remove timer frequency choice if tickless is enabled
(lkml Cc:-ed)

* Carlos R. Mafra <crmafra2@gmail.com> 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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