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qcacmn: Fix average delay calculation for hist-stats

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To calculate average delay for hist-stats, use the below
formula : new-avg = (current-avg + new-delay) / 2.
During accumulation of delay-stats for all the TID's for
a peer, only the hist-buckets with non-zero counts should
be considered for calculating the various delay levels.

Change-Id: Ic930116bd650baab6a2b43e077cf55f5c79681d5
CRs-Fixed: 3178032
This commit is contained in:
Debasis Das
2022-04-18 20:54:51 +05:30
committed by Madan Koyyalamudi
parent 844445200d
commit e7615d09c5
1 changed files with 18 additions and 7 deletions
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25
dp/wifi3.0/dp_hist.c
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@@ -160,8 +160,7 @@ void dp_hist_update_stats(struct cdp_hist_stats *hist_stats, int value)
if (qdf_unlikely(!hist_stats->avg)) if (qdf_unlikely(!hist_stats->avg))
hist_stats->avg = value; hist_stats->avg = value;
else else
hist_stats->avg = hist_stats->avg + hist_stats->avg = (hist_stats->avg + value) / 2;
((value - hist_stats->avg) >> HIST_AVG_WEIGHT_DENOM);
} }
/* /*
@@ -194,14 +193,26 @@ void dp_copy_hist_stats(struct cdp_hist_stats *src_hist_stats,
void dp_accumulate_hist_stats(struct cdp_hist_stats *src_hist_stats, void dp_accumulate_hist_stats(struct cdp_hist_stats *src_hist_stats,
struct cdp_hist_stats *dst_hist_stats) struct cdp_hist_stats *dst_hist_stats)
{ {
uint8_t index; uint8_t index, hist_stats_valid = 0;
for (index = 0; index < CDP_HIST_BUCKET_MAX; index++) for (index = 0; index < CDP_HIST_BUCKET_MAX; index++) {
dst_hist_stats->hist.freq[index] += dst_hist_stats->hist.freq[index] +=
src_hist_stats->hist.freq[index]; src_hist_stats->hist.freq[index];
dst_hist_stats->min = QDF_MIN(src_hist_stats->min, dst_hist_stats->min); if (src_hist_stats->hist.freq[index])
dst_hist_stats->max = QDF_MAX(src_hist_stats->max, dst_hist_stats->max); hist_stats_valid = 1;
dst_hist_stats->avg = (src_hist_stats->avg + dst_hist_stats->avg) >> 1; }
/*
* If at least one hist-bucket has non-zero count,
* proceed with the detailed calculation.
*/
if (hist_stats_valid) {
dst_hist_stats->min = QDF_MIN(src_hist_stats->min,
dst_hist_stats->min);
dst_hist_stats->max = QDF_MAX(src_hist_stats->max,
dst_hist_stats->max);
dst_hist_stats->avg = (src_hist_stats->avg +
dst_hist_stats->avg) >> 1;
}
} }
/* /*