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mac80211: reduce calculation costs of EWMA
authorThomas Huehn <thomas@net.t-labs.tu-berlin.de>
Tue, 24 Mar 2015 20:09:42 +0000 (21:09 +0100)
committerJohannes Berg <johannes.berg@intel.com>
Wed, 1 Apr 2015 18:44:33 +0000 (20:44 +0200)
commitade6d4a2ec57d258bc181a155288c267dd8cf094
tree60df72e1b0f08c2f544a5ae4cfcec181f5ae0de1tree | snapshot
parent50e55a8ea76fb593403cc09767b6371c17364ba8commit | diff
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>
net/mac80211/rc80211_minstrel.h diff | blob | history
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