[Powertop] [PATCH 1/1] tunable: update sched_mc_power_savings target value

[Nanley Chery <nanleychery at gmail.com>]

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Starting in kernel 2.6.29, the highest power savings level increased to "2".
However, in kernel 3.5, the sched power savings feature was removed altogether.

Signed-off-by: Nanley Chery <nanleychery(a)gmail.com>
---
 src/tuning/tuning.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/tuning/tuning.cpp b/src/tuning/tuning.cpp
index 6367a20..ea1905b 100644
--- a/src/tuning/tuning.cpp
+++ b/src/tuning/tuning.cpp
@@ -28,6 +28,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <ncurses.h>
+#include <linux/version.h>
 
 
 #include "tuning.h"
@@ -58,7 +59,9 @@ static void init_tuning(void)
 {
 	add_sysfs_tunable(_("Enable Audio codec power management"), "/sys/module/snd_hda_intel/parameters/power_save", "1");
 	add_sysfs_tunable(_("NMI watchdog should be turned off"), "/proc/sys/kernel/nmi_watchdog", "0");
-	add_sysfs_tunable(_("Power Aware CPU scheduler"), "/sys/devices/system/cpu/sched_mc_power_savings", "1");
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(3,4,0)
+	add_sysfs_tunable(_("Power Aware CPU scheduler"), "/sys/devices/system/cpu/sched_mc_power_savings", "2");
+#endif
 	add_sysfs_tunable(_("VM writeback timeout"), "/proc/sys/vm/dirty_writeback_centisecs", "1500");
 	add_sata_tunables();
 	add_usb_tunables();
-- 
2.0.4