You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
23 lines
735 B
Diff
23 lines
735 B
Diff
From: Felix Fietkau <nbd@nbd.name>
|
|
Date: Wed, 14 Dec 2016 20:15:33 +0100
|
|
Subject: [PATCH] mac80211: minstrel: reduce MINSTREL_SCALE
|
|
|
|
The loss of a bit of extra precision does not hurt the calculation, 12
|
|
bits is still enough to calculate probabilities well. Reducing the scale
|
|
makes it easier to avoid overflows
|
|
|
|
Signed-off-by: Felix Fietkau <nbd@nbd.name>
|
|
---
|
|
|
|
--- a/net/mac80211/rc80211_minstrel.h
|
|
+++ b/net/mac80211/rc80211_minstrel.h
|
|
@@ -14,7 +14,7 @@
|
|
#define SAMPLE_COLUMNS 10 /* number of columns in sample table */
|
|
|
|
/* scaled fraction values */
|
|
-#define MINSTREL_SCALE 16
|
|
+#define MINSTREL_SCALE 12
|
|
#define MINSTREL_FRAC(val, div) (((val) << MINSTREL_SCALE) / div)
|
|
#define MINSTREL_TRUNC(val) ((val) >> MINSTREL_SCALE)
|
|
|