linux-kernel - Re: [PATCH v7 3/3] nl80211/mac80211: Report signal average

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Date:	Fri, 19 Nov 2010 10:58:36 -0800
From:	Johannes Berg <johannes@...solutions.net>
To:	Jouni Malinen <j@...fi>
Cc:	Bruno Randolf <br1@...fach.org>, linville@...driver.com,
	randy.dunlap@...cle.com, br1@...nktube.com, peterz@...radead.org,
	blp@...stanford.edu, linux-wireless@...r.kernel.org,
	linux-kernel@...r.kernel.org, Lars_Ericsson@...ia.com,
	stefanr@...6.in-berlin.de, kosaki.motohiro@...fujitsu.com,
	akpm@...ux-foundation.org, kevin.granade@...il.com
Subject: Re: [PATCH v7 3/3] nl80211/mac80211: Report signal average

On Tue, 2010-11-16 at 11:37 +0200, Jouni Malinen wrote:
> On Fri, Nov 12, 2010 at 12:00:35PM +0900, Bruno Randolf wrote:
> > Extend nl80211 to report an exponential weighted moving average (EWMA) of the
> > signal value. Since the signal value usually fluctuates between different
> > packets, an average can be more useful than the value of the last packet.
> > 
> > This uses the recently added generic EWMA library function.
> 
> Isn't that generic EWMA library function making this much more CPU
> intensive than necessary?

John, is there any reason you completely ignored Jouni's feedback here?
This wasn't addressed in v8.

johannes

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