Revert "cpufreq: ondemand: add input_boost interface"

This reverts commit 8d6709fbca3b3f884fa503cb9072973335ecb06e.
cpufreq: ondemand: add input_boost interface

Currently Ondemand governor handles any input event
like touch by scaling the CPU frequency to maximum
available on the target.

This change adds a new sysfs interface "input_boost"
whereby the CPU will scale to this frequency on input events.
The value of this sysfs is user defined so input events
can now be handled by scaling the CPU to lower frequencies
than target max.

Change-Id: I5428fd8797c9984b17a66b01a44557f2160e8b68
Signed-off-by: Dilip Gudlur <dgudlur@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>

Conflicts:
	drivers/cpufreq/cpufreq_ondemand.c
cpufreq: ondemand:Fix NULL check for dbs_info->cur_policy

dbs_info->cur_policy can go NULL when processing
CPUFREQ_GOV_LIMITS, NULL check is required
before processing it

Change-Id: Iba99b563e230835dfcd24573335065d68ad25821
CRs-fixed: 576272
Signed-off-by: Swetha Chikkaboraiah <schikk@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
cpufreq: ondemand:kernel NULL pointer dereference at dbs_check_cpu

Function dbs_check_cpu  calls __cpufreq_driver_getavg
With  policy as IN/OUT parameter.
There is possiblity of policy becoming NULL in
 __cpufreq_driver_getavg. Same policy is getting
accessed in the for loop which leads to NULL pointer dereference.
So NULL check is required for the policy

CRs-fixed: 582925
Change-Id: Ib8d8de8d66500430a5aa4c275937640e4f934aa8
Signed-off-by: Swetha Chikkaboraiah <schikk@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
cpufreq: ondemand: Disable freq sync feature in store_powersave_bias

Turn off frequency synchronization of CPUs on thread migrations
when powersave bias is enabled. This is done to prevent re-arming
of the dbs timer work (which is cancelled by store_powersave_bias)
by the sync_thread.

Change-Id: I165dd591845c1d66d01a14e8dfc44c767c677b0d
Signed-off-by: Rohit Gupta <rohgup@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
cpufreq: ondemand: fix timer-related list corruption in store_powersave_bias()

The dbs_timer_init() call in store_powersave_bias() re-initializes the
dbs_info workqueue, call on dbs_timer_exit() to ensure
outstanding work is cleared prior to making this call. Also, grab the
percpu timer_mutex lock to avoid race conditions with respect to the
dbs timer.

Change-Id: I79f3d43eeb51d2d8e21edd0fe043d6583333951f
Signed-off-by: Osvaldo Banuelos <osvaldob@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
ondemand: add sysfs entry for down_diff_multi_core

This change adds sysfs entry for the ondemand governor's attribute
down_differential_multi_core. This is required to be able to program
this knob to attain better perf/power for use cases like camcorder.

CRs-fixed: 561456
Change-Id: Ib7c1223215c6b714c286c231ed37f3abfae741c6
Signed-off-by: Krishna Vanka <kvanka@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
cpufreq: ondemand: Remove unnecessary synchronization attempt

Commit 1ce28d6b (ondemand: updated tune for hardware coordination)
brings in an attempt to synchronize expiry of per-cpu ondemand timer
at same time across all online cpus. This is meant to help systems
where "multiple cores share P-state via Hardware Coordination".

Synchronization is achieved by having timers expire when jiffy value
would be a perfect multiple of sampling window size. While such
synchronozation attemps are unnecessary on systems where cores don't
share P-states, it can hurt on power as cpus can now work off shorter
sampling windows (when percentage utilization over short window can be
observed to be high, causing frequency to be boosted).

Remove this unnecessary attempt to synchronize expiry of ondemand
timer across online cpus. A more acceptable solution could be to have
low-level architecture specific cpufreq driver indicate the need for
synchronization.

Change-Id: I6cb1cf3472ca106f029dc01248e0df7cfbb495b8
Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
Revert "cpufreq: ondemand: fix build when someone tried to compile ondemand."

This reverts commit 7a64a2df27ed6474dfba9a6527f7507549991f3b.
cpufreq: ondemand: Remove input boost

A probably imperfect extermination of ondemand's input boost.
We rely on the universal cpu boost input handler now.

Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
cpufreq: ondemand: Use hotplug thread infrastructure

The dbs_sync threads caused considerable load, even when ondemand
wasn't even active. Use the hotplug thread infrastructure to park
the threads.

Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
cpufreq: ondemand: Remove unused waitqueue

Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
cpufreq: ondemand: fix compiling issue, add Google defaults (jacked from the ramdisk) and add small input boost code (still static values for now for testing). In case anyone wants to use Ondemand instead of interactive.

Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
cpufreq: cpu-boost: Increase sync thread policy and priority

More or less all cpufreq related threads run in a high priority.

Also, CMs patch series was somehow out of sync and incomplete,
readd the unchanged policy update to source cpu bit. And readd
the check for a possible corner case in try_to_wake_up() that
was already missing before.

Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
cpufreq: ondemand: add input_boost_freq and boostpulse_duration sysfs.

Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
cpufreq: ondemand: fix a derp on my input_boost code hook.

Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
Revert "Revert "cpufreq: interactive: Add limits_changed to boosted case. From https://github.com/myfluxi/kernel_msm/commit/1b531fd8526fd3d469a475922b17a87b5b4f7a13""

This reverts commit fd860a2c5951ec96e2f61438c58e96e19c63fbb7.
Revert "cpufreq: break earlier if target_freq is equal to current freq. Also fetch a fix from @imoseyon to update other cpuX nodes when cpu0 gets updated (max/min/gov)."

This reverts commit 4417fda8cd01b5c469f5d6c912cf485684d800a6.
cpufreq: bail early if target_freq == current.

Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
cpufreq: interactive: remove problematic code.

Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>