From: Peter Zijlstra <peterz@infradead.org>
To: Bruno Randolf <br1@einfach.org>
Cc: Bob Copeland <me@bobcopeland.com>,
Johannes Berg <johannes@sipsolutions.net>,
Jouni Malinen <j@w1.fi>,
linville@tuxdriver.com, randy.dunlap@oracle.com,
blp@cs.stanford.edu, linux-wireless@vger.kernel.org,
linux-kernel@vger.kernel.org, Lars_Ericsson@telia.com,
stefanr@s5r6.in-berlin.de, kosaki.motohiro@jp.fujitsu.com,
akpm@linux-foundation.org, kevin.granade@gmail.com
Subject: Re: [PATCH v7 3/3] nl80211/mac80211: Report signal average
Date: Fri, 19 Nov 2010 13:16:51 +0100 [thread overview]
Message-ID: <1290169011.2109.1571.camel@laptop> (raw)
In-Reply-To: <201011191807.06013.br1@einfach.org>
On Fri, 2010-11-19 at 18:07 +0900, Bruno Randolf wrote:
> Hmm, maybe I suck in mathemathics, but I don't see a way to do that given the
> formula:
>
> (((internal * (weight - 1)) + (val * factor)) / weight
If you assume weight == 2^n, you can write that as:
(((internal << n) - internal) + (val * factor)) >> n
next prev parent reply other threads:[~2010-11-19 12:17 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-12 3:00 [PATCH v7 0/3] Generic exponentially weighted moving average (EWMA) Bruno Randolf
2010-11-12 3:00 ` [PATCH v7 1/3] Add generic exponentially weighted moving average (EWMA) function Bruno Randolf
2010-11-12 3:00 ` [PATCH v7 2/3] ath5k: Use generic EWMA library Bruno Randolf
2010-11-12 3:00 ` [PATCH v7 3/3] nl80211/mac80211: Report signal average Bruno Randolf
2010-11-16 9:37 ` Jouni Malinen
2010-11-17 8:28 ` Bruno Randolf
2010-11-17 16:16 ` Johannes Berg
2010-11-17 23:11 ` Bob Copeland
2010-11-19 8:49 ` Bruno Randolf
2010-11-19 14:04 ` Stefan Richter
2010-11-22 2:41 ` Bruno Randolf
2010-11-22 7:26 ` Stefan Richter
2010-11-19 17:52 ` Johannes Berg
2010-11-22 2:36 ` Bruno Randolf
2010-11-19 9:07 ` Bruno Randolf
2010-11-19 12:16 ` Peter Zijlstra [this message]
2010-11-19 22:28 ` Bob Copeland
2010-11-19 23:01 ` Peter Zijlstra
2010-12-02 8:12 ` Bruno Randolf
2010-11-19 18:58 ` Johannes Berg
2010-11-22 18:46 ` John W. Linville
2010-11-20 16:45 ` Brian Prodoehl
2010-11-24 16:24 ` Johannes Berg
2010-11-24 19:05 ` Ben Greear
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