Sqaushed commits to add FIOPS I/O scheduler-

block: fiops ioscheduler core

FIOPS (Fair IOPS) ioscheduler is IOPS based ioscheduler, so only targets
for drive without I/O seek. It's quite similar like CFQ, but the dispatch
decision is made according to IOPS instead of slice.

The algorithm is simple. Drive has a service tree, and each task lives in
the tree. The key into the tree is called vios (virtual I/O). Every request
has vios, which is calculated according to its ioprio, request size and so
on. Task's vios is the sum of vios of all requests it dispatches. FIOPS
always selects task with minimum vios in the service tree and let the task
dispatch request. The dispatched request's vios is then added to the task's
vios and the task is repositioned in the sevice tree.

Unlike CFQ, FIOPS doesn't have separate sync/async queues, because with I/O
less writeback, usually a task can only dispatch either sync or async requests.
Bias read or write request can still be done with read/write scale.

One issue is if workload iodepth is lower than drive queue_depth, IOPS
share of a task might not be strictly according to its priority, request
Bias read or write request can still be done with read/write scale.

One issue is if workload iodepth is lower than drive queue_depth, IOPS
share of a task might not be strictly according to its priority, request
size and so on. In this case, the drive is in idle actually. Solving the
problem need make drive idle, so impact performance. I believe CFQ isn't
completely fair between tasks in such case too.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>

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

Conflicts:
	block/Kconfig.iosched
	block/Makefile

block: fiops read/write request scale

read/write speed of Flash based storage usually is different. For example,
in my SSD maxium thoughput of read is about 3 times faster than that of
write. Add a scale to differenate read and write. Also add a tunable, so
user can assign different scale for read and write.

By default, the scale is 1:1, which means the scale is a noop.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>

block: fiops sync/async scale

CFQ gives 2.5 times more share to sync workload. This matches CFQ.

Note this is different with the read/write scale. We have 3 types of
requests:
1. read
2. sync write
3. write
CFQ doesn't differentitate type 1 and 2, but request cost of 1 and 2
are usually different for flash based storage. So we have both sync/async
and read/write scale here.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>

block: fiops add ioprio support

Add CFQ-like ioprio support. Priority A will get 20% more share than priority
A+1, which matches CFQ.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>

block: fiops preserve vios key for deep queue depth workload

If the task has running request, even it's added into service tree newly,
we preserve its vios key, so it will not lost its share. This should work
for task driving big queue depth. For single depth task, there is no approach
to preserve its vios key.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>

block: fiops bias sync workload

If there are async requests running, delay async workload. Otherwise
async workload (usually very deep iodepth) will use all queue iodepth
and later sync requests will get long delayed. The idea is from CFQ.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>

block: fiops add some trace information

Add some trace information, which is helpful when I do debugging.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Make Graphite Optimizations a config option to easily enable/disable it
Update defconfig to enable graphite optimizations-
They seem to work without issue, while giving a performance boost
GPU: add optimization flags to GPU drivers

Signed-off-by: Lens-F <tnoah12@gmail.com>
Signed-off-by: flar2 <asegaert@gmail.com>
GCC 4.9.1: fix compile warnings

Signed-off-by: flar2 <asegaert@gmail.com>

Conflicts:
	kernel/workqueue.c
	net/ipv4/tcp_input.c
	net/unix/af_unix.c

Change-Id: I0f87872ae1324e4ff33b0a867b765324799e5fab
slimbus: Optimize overclocking of master component

* Change root frequency to optimal value (11 was default)
* Add 44khz and 48khz to default SLIM RATES

Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
Signed-off-by: Lens-F <tnoah12@gmail.com>
cpufreq: stockdemand: add stock caf ondemand with some enhancements

Signed-off-by: Lens-F <tnoah12@gmail.com>

Conflicts:
	arch/arm/configs/lemur_defconfig

Change-Id: I70ebc7915e999068fe03a1b6cd6c334a3186f7af
Makefile: make more butter (Ofast, DNDEBUG, etc)

thanks Cl3kener and Lens-F

Change-Id: I6d21c516345cd30a647eb6fdceb6d6409df52408
Makefile: neon -> neon-vfpv4

Change-Id: Ia990d3fc3942c40942bbc05a85242de73cb176f2
GPU: Ofast and DNDEBUG

Change-Id: I87e3b8923cee46142ff8eef5265c5b8ce37e4c24
Makefile: reset once more, and add back graphite and ofast

Change-Id: I2a164bef0478fd731f456fe16e652acf1ceaf08d
defconfig: modify Pronto configs

model after other pronto devices, such as ghost

Idea from interloper, but changed a few configs from his implementation
Conflicts:
	arch/arm/configs/liquid_m8_defconfig
Revert "Fastcharge - ported to M8 by flar2"

This reverts commit c97e650f3ea0a7fb88bce099e66ed022bb0498a3.

Conflicts:
	arch/arm/mach-msm/Kconfig

Change-Id: I2c4412a43cde7f3d045ce9000d812e94c7de0d7a
m8" Import Pronto from HTC 4.4.3 GPE source

Change-Id: I0bf224f2d5eff05a2c2b75e10122fcfea5b0cabe

Conflicts:
	drivers/staging/prima/CORE/MAC/src/pe/lim/limProcessSmeReqMessages.c
	drivers/staging/prima/firmware_bin/WCNSS_qcom_cfg.ini
m8: defconfig update

Change-Id: I19f9732aaf6a22012ff086dbcf226af5264c556a

Conflicts:
	arch/arm/configs/liquid_m8_defconfig
Squashed msm_mpdecision and added optimizations

mach-msm: Add msm_mpdecision Kconfig & Makefile hooks
Also rename qcom's mpdecision to stay in place and be used if CONFIG_MSM_MPDEC is not set

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

Conflicts:
	arch/arm/mach-msm/Makefile

Conflicts:
	arch/arm/mach-msm/Makefile

Change-Id: Ia6f6a385eafaf40574a1b530e1752e3df83386ab

Conflicts:
	arch/arm/mach-msm/Makefile

mach-msm: Add msm_mpdecision
This currently only does the following thing:
Screen on -> CPU1 online
Screen off -> CPU1 offline

More to come.

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

mach-msm: mpdecision: small cleanup

Signed-off-by: showp1984 <showp1984@gmail.com>

mach-msm: mpdecision: add load based decision making

This now works like the mpdecision binary from QCOM.
CPU hotplugging/unplugging based on system load.

A sysfs interface will be built in with a later commit.

Signed-off-by: showp1984 <showp1984@gmail.com>

Conflicts:
	arch/arm/mach-msm/msm_rq_stats.c

mach-msm: mpdecision: restructure locks, add delay

The new delay allows the CPU to come up before any other action is taken.
This prevents fast plugging and also ensures the CPU hotplug process
is really done, before trying to unplug it again (or plug it).

The new locks are more efficient, and only used if necessary.

Signed-off-by: showp1984 <showp1984@gmail.com>

mach-msm: mpdecision: pause if CPU is unplugged outside of mpdecision

This fixes cpu wars if something else tries to control the cpus.
default delay: 10000ms

Signed-off-by: showp1984 <showp1984@gmail.com>

mach-msm: mpdecision: change early_suspend_level to blank_screen

Signed-off-by: showp1984 <showp1984@gmail.com>

mach-msm: mpdecision: don't start immediately

Signed-off-by: showp1984 <showp1984@gmail.com>

mach-msm: mpdecision: show cpumask after up/down

Signed-off-by: showp1984 <showp1984@gmail.com>

mach-msm: mpdecision: always set the suspend var

Signed-off-by: showp1984 <showp1984@gmail.com>

mach-msm: mpdecision: remove up/down delay, our default delay is large enough

Signed-off-by: showp1984 <showp1984@gmail.com>

mach-msm: mpdecision: add email to (c)

Signed-off-by: showp1984 <showp1984@gmail.com>

mach-msm: mpdecision: fix foreign hotplug/unplug detection

Signed-off-by: showp1984 <showp1984@gmail.com>

Conflicts:

	arch/arm/mach-msm/msm_mpdecision.c

mach-msm: mpdecision: show how long the cpu was online

Signed-off-by: showp1984 <showp1984@gmail.com>

mach-msm: mpdecision: rename msm_mpdec_suspend to msm_mpdec_cpudata

Since this is being used for more than suspend stuff the old name
just isn't accurate anymore.

Signed-off-by: showp1984 <showp1984@gmail.com>

mach-msm: mpdecision: add sysfs interface

Signed-off-by: showp1984 <showp1984@gmail.com>

mach-msm: mpdecision: remove debug output

Signed-off-by: showp1984 <showp1984@gmail.com>

mach-msm: mpdecision: increase startdelay for sense

Surprise! Sense needs a lot longer to boot up than aosp...

Signed-off-by: showp1984 <showp1984@gmail.com>

mach-msm: mpdecision: adjust thresholds for sense

Sense is just too hungry...

Signed-off-by: showp1984 <showp1984@gmail.com>

mach-msm: mpdecision: fix foreign cpu control detection

Signed-off-by: showp1984 <showp1984@gmail.com>

mach-msm: mpdecision: allow mpdecision to be disabled (sysfs)

This allows disabling/enabling of mpdecision over sysfs.

Signed-off-by: showp1984 <showp1984@gmail.com>

mach-msm: mpdecision: increase start delay for Sense

Signed-off-by: showp1984 <showp1984@gmail.com>

mach-msm: mpdecision: increase up threshold for Sense

Signed-off-by: showp1984 <showp1984@gmail.com>

mach-msm: mpdecision: sysfs: check if cpu is offline before hotplugging it

Signed-off-by: showp1984 <showp1984@gmail.com>

mach-msm: mpdecision: don't turn off cpu1 if freq > idle

This fixes cpu1 being turned off though it is still working
with a high frequency. The idle_freq can be modified through sysfs.

Signed-off-by: showp1984 <showp1984@gmail.com>

mach-msm: mpdecision: fixup: move idle block to mpdecision()

This belongs in mp_decision() because this influences the decision
mpdecision is about to make.

Signed-off-by: showp1984 <showp1984@gmail.com>

mach-msm: mpdecision: don't turn on cpu1 if cpu0 freq is below idle_freq
If the clock of cpu0 is below the set idle_freq don't enable cpu1 and
disregard the runqueue value.

Signed-off-by: showp1984 <showp1984@gmail.com>

msm_mpdecision: fix check for khz/mhz value (idle_freq sysfs)

Signed-off-by: showp1984 <showp1984@gmail.com>

msm_mpdecision: add debug output

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: make mpdecision() core independent

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: make msm_mpdec_work_thread() core independent

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: fix get_slowest_cpu()

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: make debug output more compact & informative

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: decrease startup delay

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: decrease decision delay

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: update core data on first call

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: don't let msm_mpdec_work_thread() run if we are still booting

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: make earlysuspend/lateresume core independent

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: update header to include full feature list

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: export the new, larger nwns/twts arrays to sysfs

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: fix disabling mpdecision over sysfs for multicore

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: remove useless locking

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: use own workqueues

This will alter mpdecision to alloc it's own wq rather than using
the predefined queue which is a shared resource.

The WQ is not bound to the issuer CPU (=high-priority), has a
rescue worker task and is freezable.
Also destroy the workqueue on exit, and rename msm_mpdec to
msm_mpdec_init.

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: cancel/resume main work thread on ES/LR

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: use unique lock names

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: add max/min cpu limits to sysfs

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: use CONFIG_NR_CPUS for max_cpu sysfs

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: decrease delay between checks to 70ms

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: add get_rate()

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: fix merge errors

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: various fixes and tweaks

- fix get_slowest_cpu_rate(): don't cut off rate to int
- fix get_slowest_cpu_rate(): don't use values from an offline cpu
- fix get_slowest_cpu(): don't return cpu0.
- tweak hotplug thresholds

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: disable debug

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: remove early_suspend, add fb callback

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: when returning from sleep, start immediately

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: we can't turn off cpu0

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: turn on cpu1 early

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: on resume pull up cpu1

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: tweak hotplug values

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

mpdecision: don't use sleep, cancel/resume wq instead

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

mpdecision: checking every 100ms is enough

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

mpdecision: update copyright

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

Revert "mpdecision: don't use sleep, cancel/resume wq instead"

This reverts commit 4b6f8555481d2c5049eb7cb496283749ed7cd7ca.

msm_mpdecision: add stats & expose to sysfs

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: fix sleep, don't use pause

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

Revert "msm_mpdecision: remove early_suspend, add fb callback"

This reverts commit 56fa75bf888aaf21ce82b84cafa5b10e077e3d5b.

msm_mpdecision: fix spacing across the whole file
In the past year this evolved to a battlefield of tabs, spaces and different sizes of them. Fix that.

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: stats: if cpu is online, add current ontime to stats

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: add input event boost [read more]

This adds an input event boost to mpdecision.
It will basically boost the min freq of all cpus to predefined values if an
input event is detected.
Devices that qualify as boosters must fullfill one of these conditions:
- contain touch in their name
- contain keyboard in their name
This also boosts cpus independently from each other. Meaning:
If a cpu is hotplugged after the boost of another cpu was initiated the next
boost pulse will boost that cpu too.

Sysfs interface underway.

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: add sysfs interface for input event boost

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: input event boost: fix not resetting boost if cpu was unplugged before

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: tune hotplug values

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: boost: detect changed min frequency and update accordingly

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: boost: don't schedule more check than needed

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: increasing the check delay to 130ms
This change brings us down from 10 to 8 checks each second. The input boost reacts without
delay which is why we don't need to check for hotplugs so often anymore.

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: change frequencies for input boost
This should provide us with a more battery friendly setup in light
usage situations while it still provides the obvious advantages
the input boost gives us (faster reaction).

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: min_cpus & max_cpus should on/offline affected cpus

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: several changes [read more]
reworked cpu_up/down handling which removed redundant code
reworked max/min_cpus settings
reworked suspend/resume handling to obide by these new changes
also reworked locking for per cpu settings

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: fix changing boost freq sets min = boost freq

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: boost: if we are not boosted, revib_wq does not need to run at all

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: add fb callback, keep earlysuspend

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: update inputboost frequencies

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: switch to lcd callback and improve sus/res code

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: remove per_cpu suspend value
This is unneccessary and produces overhead when checking/setting over loops

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: offload definitions to header

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: fix definitions for earlysuspend/lcd callback switch

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: fix whitespaces throughout the file to comply with linux coding styles

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

Conflicts:
	arch/arm/mach-msm/msm_mpdecision.c

msm_mpdecision: early continue get_slowest_cpu() and _rate() to save some cycles

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: move startdelay to init to save cycles on each work call

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: also verify that boost frequencies are > minfreq

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: fix boost_time not respecting sysfs changes
This fixes issue #17

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: add missing #ifdefs around thermal related code
This fixes issue #19 (compilation without thermal)

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: add input boost triggers
This fixes issue #27 - No boost event triggered
&
issue #28 - Power button should trigger boost_freq

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: fix early_suspend compilation

This was not changed because we do not compile with early suspend
and hence didn't encounter any errors. Fix it.

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: add locking to early_suspend related code, even if we do not use it

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: opt out early if we are thermal throttled

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

mdpec: fix missing ifdefs when compiling with earlysuspend

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

msm_mpdecision: Back off just a tad

* Currently this is too aggressive just by a tad.  Let's hold this back a bit and give a little bit more space for cpu governors to work their magic before engaging more cores.

Change-Id: I2ed8635bdbed6b1726c061ba8d4e61e92dd55169
Signed-off-by: Chet Kener <Cl3Kener@gmail.com>

mpdec: FIX BUG#27

Unplugging a boosted CPU will cause it to come back with
the boosted minimum frequency and stay on it.
(it gets stuck on boost)

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

mpdec: if !scroff_single_core unboost all cpus while suspending

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

mpdec: fix missing log message on resume if !scroff_single_core

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>
cpuinit: fixes from showp1984

Change-Id: I854a7d06988dfba044b4f647a203562518924664
cpuinit: get rid of __cpuinit, manual fixups

a few final fixups that haven't been caught by regexps

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

Conflicts:
	arch/x86/kernel/cpu/common.c
	arch/x86/kernel/cpu/cyrix.c
	drivers/cpufreq/longhaul.h
	kernel/rcutree_plugin.h

Change-Id: I8e4cbc23895af0eb223f6990a3755a7449a279f9
more cpuinit fixes

Change-Id: I7a4151ed31424f5ebdea26ed0f10b7ed927e22ce
kbuild: drop cpuinit/cpuexit checks in modpost

With the removal of cpuinit/cpuexit we no longer need to
do section mismatch checks on these sections.

Drop it from modpost.

Change-Id: I5ab4a5752a962c09d60f759de6c9888a8f85a6f9
Signed-off-by: Dennis Rassmann <showp1984@gmail.com>