Return-path: Received: from he.sipsolutions.net ([78.46.109.217]:53966 "EHLO sipsolutions.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754425Ab0KXQYw (ORCPT ); Wed, 24 Nov 2010 11:24:52 -0500 Subject: Re: [PATCH v7 3/3] nl80211/mac80211: Report signal average From: Johannes Berg To: Bruno Randolf Cc: linville@tuxdriver.com, linux-wireless@vger.kernel.org In-Reply-To: <20101112030035.28522.75318.stgit@localhost6.localdomain6> References: <20101112024901.28522.21895.stgit@localhost6.localdomain6> <20101112030035.28522.75318.stgit@localhost6.localdomain6> Content-Type: text/plain; charset="UTF-8" Date: Wed, 24 Nov 2010 17:24:50 +0100 Message-ID: <1290615890.3790.14.camel@jlt3.sipsolutions.net> Mime-Version: 1.0 Sender: linux-wireless-owner@vger.kernel.org List-ID: On Fri, 2010-11-12 at 12:00 +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. John, please revert this patch ASAP -- it completely messed up some ABI, and the performance discussion is also not over yet. johannes