drivers/regulator/core.c: reduce log spam

Signed-off-by: Paul Reioux <reioux@gmail.com>
drivers/misc/tegra_vibrator_enr.c: reduce log spam

Signed-off-by: Paul Reioux <reioux@gmail.com>
drivers/cpufreq/cpufreq.c: reduce log spam

Signed-off-by: Paul Reioux <reioux@gmail.com>

Conflicts:
	drivers/cpufreq/cpufreq.c
drivers/video/backlight/tegra_pwm_bl.c: reduce log spam

Signed-off-by: Paul Reioux <reioux@gmail.com>
kernel/time/tick-sched.c: reduce log spam!

Signed-off-by: Paul Reioux <reioux@gmail.com>
init/Kconfig: decouple DEBUG_KERNEL from EXPERT settings

Signed-off-by: Paul Reioux <reioux@gmail.com>
kernel: fix derpy dependency on DEBUG_KERNEL by HTC :(

Signed-off-by: Paul Reioux <reioux@gmail.com>
ksm: check and skip page, if it is already scanned

From: Pradeep Sawlani <sawlani@amazon.com>

On system like Android where most of the process are forked
from parent w/o execve, KSM can scan same page multiple times
in one scan cycle. There is no advantage in scanning same page
multiple times for merging. During testing with Android, it was
observed around 60% pages are skipped for each scan cycle.

Change-Id: I0cf01802f0b4d61fcab92558beb9e1c660dc9a77
Link: http://lkml.kernel.org/r/CAMrOTPgBtANS_ryRjan0-dTL97U7eRvtf3dCsss=Kn+Uk89fuA@mail.gmail.com
Signed-off-by: Pradeep Sawlani <sawlani@amazon.com>

Signed-off-by: Paul Reioux <reioux@gmail.com>

Conflicts:
	include/linux/page-flags.h
Revert "drivers/cpufreq/cpufreq.c: reduce log spam"

This reverts commit cb452eb703780f5ccb9fd20cb91e68b42ce8a4f6.
kernel:sched: LOAD_FREQ (4*HZ+61) avoids loadavg Moire

LOAD_FREQ is (5*HZ+1) to avoid high load average when idle:
http://kerneltrap.org/mailarchive/linux-kernel/2007/10/3/328568

I suggest (4*HZ+61) for a better distribution.

With some seconds based load (like SSL heartbeats)
and LOAD_FREQ at (5*HZ+1) I see Moire patterns like inverse sawtooth,
since 2 or 3 probes hit the jobs (load increases quickly),
followed by several probes missing it.

A 4.61 sec interval gives optimal distribution over when within a
second a probe is taken, as .61 is close to golden ratio phi 1.618...
(test in http://ripke.com/goldenratio.c).

12*4.61 = 55.32 secs is still close to a minute,
and 13*4.61=59.93 is even closer than the current 12*5.01=60.12
(with exponents EXP_x adjusted to a ratio of 13 instead of 12).