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| author | Bruno Randolf <br1@einfach.org> | 2010-11-16 10:58:37 +0900 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2010-11-18 14:21:52 -0500 |
| commit | c5485a7e7569ab32eea240c850198519e2a765ef (patch) | |
| tree | 928a8556deaec0811d1b83102b33365aab28a270 /lib/Kconfig | |
| parent | 50a9432daeece6fc1309bef1dc0a7b8fde8204cb (diff) | |
| download | linux-c5485a7e7569ab32eea240c850198519e2a765ef.tar.gz linux-c5485a7e7569ab32eea240c850198519e2a765ef.tar.bz2 linux-c5485a7e7569ab32eea240c850198519e2a765ef.zip | |
lib: Add generic exponentially weighted moving average (EWMA) function
This adds generic functions for calculating Exponentially Weighted Moving
Averages (EWMA). This implementation makes use of a structure which keeps the
EWMA parameters and a scaled up internal representation to reduce rounding
errors.
The original idea for this implementation came from the rt2x00 driver
(rt2x00link.c). I would like to use it in several places in the mac80211 and
ath5k code and I hope it can be useful in many other places in the kernel code.
Signed-off-by: Bruno Randolf <br1@einfach.org>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'lib/Kconfig')
| -rw-r--r-- | lib/Kconfig | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/Kconfig b/lib/Kconfig index fa9bf2c06199..3116aa631af6 100644 --- a/lib/Kconfig +++ b/lib/Kconfig @@ -210,4 +210,7 @@ config GENERIC_ATOMIC64 config LRU_CACHE tristate +config AVERAGE + bool + endmenu |