From: Thomas Huehn <thomas@net.t-labs.tu-berlin.de>
Date: Tue, 24 Mar 2015 20:09:42 +0000 (+0100)
Subject: mac80211: reduce calculation costs of EWMA
X-Git-Tag: omap-for-v4.2/o2_dc~131^2~30^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ade6d4a2ec57d258bc181a155288c267dd8cf094;p=pandora-kernel.git

mac80211: reduce calculation costs of EWMA

This patch reduces the calculation costs of the EWMA macro from
"2x multiplication and 1 addition" down to "1x multiplication and
2x additions". This slightly improves performance depending on the
CPU architecture.

Signed-off-by: Thomas Huehn <thomas@net.t-labs.tu-berlin.de>
Acked-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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