tree ca7ab112a1767ce31a3d6ea5ac9e7c82a4db9343
parent e1c3b15dd33a7d990188fa5b4731c78f8ba416a4
author Karl Beldan <karl.beldan@rivierawaves.com> 1366199002 +0200
committer Johannes Berg <johannes.berg@intel.com> 1366211329 +0200

mac80211: optimize minstrel_ewma

Use powers of two in ewma of minstrel.
This changes :
- EWMA_DIV   from 100 to 2^7
- EWMA_LEVEL from 75 (/EWMA_DIV=100) to 2^6 + 2^5 (/EWMA_DIV=128)

Note that this changes EWMA_DIV - EWMA_LEVEL from 25 to 2^5 and keeps
EWMA_LEVEL / EWMA_DIV == 0.75.

Signed-off-by: Karl Beldan <karl.beldan@rivierawaves.com>
Acked-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>