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average: change to declare precision, not factor

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Declaring the factor is counter-intuitive, and people are prone
to using small(-ish) values even when that makes no sense.

Change the DECLARE_EWMA() macro to take the fractional precision,
in bits, rather than a factor, and update all users.

While at it, add some more documentation.

Acked-by: David S. Miller <[email protected]>
Signed-off-by: Johannes Berg <[email protected]>
This commit is contained in:
Johannes Berg 2017-02-15 09:49:26 +01:00
commit eb1e011a14
7 changed files with 47 additions and 26 deletions
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2
net/mac80211/ieee80211_i.h
View file

@ -428,7 +428,7 @@ struct ieee80211_sta_tx_tspec {
bool downgraded;
};
DECLARE_EWMA(beacon_signal, 16, 4)
DECLARE_EWMA(beacon_signal, 4, 4)
struct ieee80211_if_managed {
struct timer_list timer;

2
net/mac80211/sta_info.h
View file

@ -372,7 +372,7 @@ struct mesh_sta {
unsigned int fail_avg;
};
DECLARE_EWMA(signal, 1024, 8)
DECLARE_EWMA(signal, 10, 8)
struct ieee80211_sta_rx_stats {
unsigned long packets;