linux-kernel - Re: + paravirt-vmi-timer-patches.patch added to -mm tree

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Date:	Sat, 06 Jan 2007 10:06:00 -0800
From:	Daniel Walker <dwalker@...sta.com>
To:	linux-kernel@...r.kernel.org
Cc:	zach@...are.com, ak@...e.de, chrisw@...s-sol.org,
	jeremy@...source.com, rusty@...tcorp.com.au
Subject: Re: + paravirt-vmi-timer-patches.patch added to -mm tree

On Fri, 2006-12-15 at 14:27 -0800, akpm@...l.org wrote:
> +
> +config NO_IDLE_HZ
> +       bool
> +       depends on PARAVIRT
> +       default y
> +       help
> +         Switches the regular HZ timer off when the system is going
> idle.
> +         This helps a hypervisor detect that the Linux system is
> idle,
> +         reducing the overhead of idle systems. 


There is already a dynamic tick (NO_HZ) system in the -mm tree .. Given
that this implementation seems unnecessary. Why do you need another
different system to do this?

Daniel

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