+ cpuidle-add-a-repeating-pattern-detector-to-the-menu-governor-fix.patch added to -mm tree

+ cpuidle-add-a-repeating-pattern-detector-to-the-menu-governor-fix.patch added to -mm tree

[akpm]

The patch titled
     cpuidle-add-a-repeating-pattern-detector-to-the-menu-governor-fix
has been added to the -mm tree.  Its filename is
     cpuidle-add-a-repeating-pattern-detector-to-the-menu-governor-fix.patch

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   a) Consider who else should be cc'ed
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See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find
out what to do about this

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------------------------------------------------------
Subject: cpuidle-add-a-repeating-pattern-detector-to-the-menu-governor-fix
From: Arjan van de Ven <arjan@infradead.org>

Frank Rowand found a bug in the new pattern detector code where
the average value was looked at before the sum of values got divided
by the number of samples.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: Corrado Zoccolo <czoccolo@gmail.com>
Cc: Frank Rowand <frank.rowand@am.sony.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 drivers/cpuidle/governors/menu.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff -puN drivers/cpuidle/governors/menu.c~cpuidle-add-a-repeating-pattern-detector-to-the-menu-governor-fix drivers/cpuidle/governors/menu.c
--- a/drivers/cpuidle/governors/menu.c~cpuidle-add-a-repeating-pattern-detector-to-the-menu-governor-fix
+++ a/drivers/cpuidle/governors/menu.c
@@ -205,12 +205,12 @@ static void detect_repeating_patterns(st
 	/* first calculate average and standard deviation of the past */
 	for (i = 0; i < INTERVALS; i++)
 		avg += data->intervals[i];
+	avg = avg / INTERVALS;
 
 	/* if the avg is beyond the known next tick, it's worthless */
 	if (avg > data->expected_us)
 		return;
 
-	avg = avg / INTERVALS;
 	for (i = 0; i < INTERVALS; i++)
 		stddev += (data->intervals[i] - avg) *
 			  (data->intervals[i] - avg);
_

Patches currently in -mm which might be from arjan@infradead.org are

origin.patch
linux-next.patch
timer-add-on-stack-deferrable-timer-interfaces.patch
x86-platform-driver-intelligent-power-sharing-driver.patch
cpuidle-add-a-repeating-pattern-detector-to-the-menu-governor-fix.patch