cpufreq: interactive: Move definition of cpufreq_gov_interactive downwards

This moves definition of cpufreq_gov_interactive towards the bottom of file, so
that we don't have to add prototype of cpufreq_governor_interactive() in the
beginning of file.

Change-Id: I04bd1004954eb36502c5cd7e35d3d7274cddaf95
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Git-commit: e50d640cacfe61e69f1b4fa92fa0174c688e919c
Git-Repo: https://android.googlesource.com/kernel/common.git
[junjiew@codeaurora.org: Resolve merge conflicts]
Signed-off-by: Junjie Wu <junjiew@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
cpufreq: interactive: fix compiling warnings

The gcc warns like:

  cpufreq_interactive.c:745:6: warning: operation on 'ret' may be undefined [-Wsequence-point]

It was introduced by commit cf0fad49d17cb8273ce555dd5b7afab67d7923bf.

Since sprintf(...) just return 1 (one character) in this case, ret should not changed.
Just discarding the result of sprintf(...) leads to the result that
the committer of cf0fad49d17cb8273ce555dd5b7afab67d7923bf wants.

Change-Id: Ifed1cef6d6a31c3ed23dad03a567b3b9eddf3a57
Signed-off-by: Chih-Wei Huang <cwhuang@android-x86.org>
Git-commit: 0715d10b9e6c04327adb189e13ecd6a3c2df48ce
Git-Repo: https://android.googlesource.com/kernel/common.git
Signed-off-by: Junjie Wu <junjiew@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
cpufreq: interactive: fix compiling warnings

Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
cpufreq: interactive: prevent the target_freq to be boosted on thread migration if the source and target cpu are the same. Also don't set the floor_freq and time on thread migration, as we don't want it to go through the min_sample_time code routine, because that's used for more sustained hispeed_freq boosts.

Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
Merge branch 'nightlies' of https://github.com/franciscofranco/hammerhead into nightlies
mako_hotplug: we should care about very high load spikes so when the load
is 100% the core that is next in line is onlined, no questions asked.
It won't go through the 1s minimum time for a core to be online before
hotplug though.

hackbench -p -T:
Before: 1.816sec
After: 0.917sec

Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
diag: dci: Safeguard to prevent Integer Underflow and Memory Leak

At certain point in diag driver there can be integer underflow
thus can lead to memory leak. Added a safeguard for that.

Change-Id: I2a0304f5b9888fe12ca9ef5fbaa9a68ee4ab9c15
Crs-fixed: 556860
Signed-off-by: Katish Paran <kparan@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
ARM: dts: msm: Add default prefetching size for secure playback

Prefetching for heaps designated for secure playback provides a
good performance boost. Add the optimized default prefetching
size for clients to use.

Change-Id: If8f5ecda5058d1142b1c4dfcdb5bbf7947f4e62c
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
mmc: core: fix issue with HPI polling timeout

Out of CPU time for the MMC context included into measured timeout. System
under heavy load will easily exceed out_of_int_time (typically 20 ms),
because  the MMC context is not running and when it is back to running,
timeout already elapsed. In this case real card status checked again and
error reported for wrong card state only.

Change-Id: I0da3bd2e7d41e4933ad3b1333d7135705a1eafec
Signed-off-by: Konstantin Dorfman <kdorfman@codeaurora.org>
Signed-off-by: Sujit Reddy Thumma <sthumma@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
mako_hotplug: code revision

  * clean it up to remove clutter on the main function
  * move all the hard-work to the cpu_revive and cpu_smash wrappers
for code clarity
  * for load spikes instead of relying on a single sample on 100% load
the counter needs to be >= 2 to avoid spurious online calls

Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
ARM: smp: Make SMP operations mandatory

Now that all SMP platforms have been converted to use struct
smp_operations, remove the "weak" attribute from the hooks
in smp.c, and make the functions static wherever possible.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
ARM: smp: remove wrapper functions

Remove some silly wrapper functions which aren't really required:
	platform_smp_prepare_cpus
	platform_secondary_init
	platform_cpu_die

This simplifies the code.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
ARM: SoC: convert MSM to SMP operations

Convert MSM SMP platforms to use struct smp_operations to provide
their SMP and CPU hotplug operations.

[antypas@xda: Adapt to 8974/hammerhead]
[linflux@arcor.de: Minor cleanups]

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Cc: David Brown <davidb@codeaurora.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
sched: Remove get_online_cpus() usage

Remove get_online_cpus() usage from the scheduler; there's 4 sites that
use it:

 - sched_init_smp(); where its completely superfluous since we're in
   'early' boot and there simply cannot be any hotplugging.

 - sched_getaffinity(); we already take a raw spinlock to protect the
   task cpus_allowed mask, this disables preemption and therefore
   also stabilizes cpu_online_mask as that's modified using
   stop_machine. However switch to active mask for symmetry with
   sched_setaffinity()/set_cpus_allowed_ptr(). We guarantee active
   mask stability by inserting sync_rcu/sched() into _cpu_down.

 - sched_setaffinity(); we don't appear to need get_online_cpus()
   either, there's two sites where hotplug appears relevant:
    * cpuset_cpus_allowed(); for the !cpuset case we use possible_mask,
      for the cpuset case we hold task_lock, which is a spinlock and
      thus for mainline disables preemption (might cause pain on RT).
    * set_cpus_allowed_ptr(); Holds all scheduler locks and thus has
      preemption properly disabled; also it already deals with hotplug
      races explicitly where it releases them.

 - migrate_swap(); we can make stop_two_cpus() do the heavy lifting for
   us with a little trickery. By adding a sync_sched/rcu() after the
   CPU_DOWN_PREPARE notifier we can provide preempt/rcu guarantees for
   cpu_active_mask. Use these to validate that both our cpus are active
   when queueing the stop work before we queue the stop_machine works
   for take_cpu_down().

CRs-fixed: 647141
Change-Id: Id41e66659574f716de0e7c29f477e56a86db9404
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: "Srivatsa S. Bhat" <srivatsa.bhat@linux.vnet.ibm.com>
Cc: Paul McKenney <paulmck@linux.vnet.ibm.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Rik van Riel <riel@redhat.com>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Link: http://lkml.kernel.org/r/20131011123820.GV3081@twins.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Git-commit: 6acce3ef84520537f8a09a12c9ddbe814a584dd2
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
[kaushalk@codeaurora.org: get_online_cpus has only 3 sites of usage in
 kernel/sched/core.c of msm-3.10 so migrate_swap changes are not
 applicable here. stop_two_cpus related change is not applicable to
 msm-3.10, so skip it.]
Signed-off-by: Kaushal Kumar <kaushalk@codeaurora.org>

Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
sched: Fix endless sync_sched/rcu() loop inside _cpu_down()

Commit 6acce3ef8:

	sched: Remove get_online_cpus() usage

tries to do sync_sched/rcu() inside _cpu_down() but triggers:

	INFO: task swapper/0:1 blocked for more than 120 seconds.
	...
	[<ffffffff811263dc>] synchronize_rcu+0x2c/0x30
	[<ffffffff81d1bd82>] _cpu_down+0x2b2/0x340
	...

It was caused by that in the rcu boost case we rely on smpboot thread to
finish the rcu callback, which has already been parked before sync in here
and leads to the endless sync_sched/rcu().

This patch exchanges the sequence of smpboot_park_threads() and
sync_sched/rcu() to fix the bug.

CRs-fixed: 647141
Change-Id: Ia8b325d7c3c778f428d9fb51271977c849df32ad
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Tested-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Michael Wang <wangyun@linux.vnet.ibm.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/5282EDC0.6060003@linux.vnet.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Git-commit: 106dd5afde3cd10db7e1370b6ddc77f0b2496a75
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Signed-off-by: Kaushal Kumar <kaushalk@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
sched: Remove extra put_online_cpus() inside sched_setaffinity()

Commit 6acce3ef8:

	sched: Remove get_online_cpus() usage

has left one extra put_online_cpus() inside sched_setaffinity(),
remove it to fix the WARN:

   ------------[ cut here ]------------
   WARNING: CPU: 0 PID: 3166 at kernel/cpu.c:84 put_online_cpus+0x43/0x70()
   ...
   [<ffffffff810c3fef>] put_online_cpus+0x43/0x70 [
   [<ffffffff810efd59>] sched_setaffinity+0x7d/0x1f9 [
   ...

CRs-fixed: 647141
Change-Id: I33f799f30a963db3e9459832832e9c786931c8c2
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Tested-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Michael Wang <wangyun@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/526DD0EE.1090309@linux.vnet.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Git-commit: ac9ff7997b6f2b31949dcd2495ac671fd9ddc990
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Signed-off-by: Kaushal Kumar <kaushalk@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
sched: Remove get_online_cpus() usage

Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
msm: camera: Avoid memory corruption by changing order of enum

SET_POSITION is added above MOVE_FOCUS which makes kernel prone to
memory corruption as MOVE_FOCUS enum is changed. when CFG_POSITION
is not present and userspace calls MOVE_FOCUS kernel misinterprets
MOVE_FOCUS as SET_POSITION and thus copies user structure to wrong
structure and makes memory to corrupt.

Change-Id: I335ee28d9af6ec25b00262d71701e503a06e21c5
Signed-off-by: Lokesh Kumar Aakulu <lkumar@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
camera: isp: create debug fs entry to log vfe overflows

Added entry in fs to log occurence of overflow from vfe

CRs-Fixed: 661343

Change-Id: Id398d11aaa84fca4ea63ea523c78c564c7eb6999
Signed-off-by: Katta Santhisindhu <kattas@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
ARM: dts: msm: Update bus bandwidth votes for sdhci on 8974

Some versions of 8974 supports eMMC HS400 mode providing maximum
throughput of 400MB/s. Update the list of bus bandwidth votes to
make sure appropriate vote is placed in this mode.

CRs-fixed: 656702
Change-Id: I5e3bed70d8c8c1c6423483f7469849823e3ebb2c
Signed-off-by: Sujit Reddy Thumma <sthumma@codeaurora.org>
Signed-off-by: Asutosh Das <asutoshd@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>