xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

mac80211: minstrel: remove cur_prob from debugfs

Browse Source 
This field is redundant, because it is simply last success divided by
last attempt count. Removing it from the rate stats struct saves about
1.2 KiB per HT station.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Felix Fietkau
2016-12-14 20:46:58 +01:00
committed by Johannes Berg
parent 95cd470c75
commit 1109dc392e
4 changed files with 18 additions and 26 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
net/mac80211/rc80211_minstrel.c
View File

@@ -159,21 +159,23 @@ minstrel_update_rates(struct minstrel_priv *mp, struct minstrel_sta_info *mi)
void
minstrel_calc_rate_stats(struct minstrel_rate_stats *mrs)
{
unsigned int cur_prob;
if (unlikely(mrs->attempts > 0)) {
mrs->sample_skipped = 0;
mrs->cur_prob = MINSTREL_FRAC(mrs->success, mrs->attempts);
cur_prob = MINSTREL_FRAC(mrs->success, mrs->attempts);
if (unlikely(!mrs->att_hist)) {
mrs->prob_ewma = mrs->cur_prob;
mrs->prob_ewma = cur_prob;
} else {
/* update exponential weighted moving variance */
mrs->prob_ewmsd = minstrel_ewmsd(mrs->prob_ewmsd,
mrs->cur_prob,
cur_prob,
mrs->prob_ewma,
EWMA_LEVEL);
/*update exponential weighted moving avarage */
mrs->prob_ewma = minstrel_ewma(mrs->prob_ewma,
mrs->cur_prob,
cur_prob,
EWMA_LEVEL);
}
mrs->att_hist += mrs->attempts;