sched/nohz: Correctly initialize 'next_balance' in 'nohz' idle balancer

The 'next_balance' field of 'nohz' idle balancer must be initialized
to jiffies. Since jiffies is initialized to negative 300 seconds the
'nohz' idle balancer does not run for the first 300s (5mins) after
bootup. If no new processes are spawed or no idle cycles happen, the
load on the cpus will remain unbalanced for that duration.

Signed-off-by: Diwakar Tundlam <dtundlam@nvidia.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1DD7BFEDD3147247B1355BEFEFE4665237994F30EF@HQMAIL04.nvidia.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>

[xqi@codeaurora.org merge into different file location in 3.0]
Change-Id: I42c41210babb0881150d28d11c2d3fce24fe3a9f
Signed-off-by: Xin Qi <xqi@codeaurora.org>
sched/nohz: Fix logic in nohz_kick_needed

Update the logic so that as long as rq->nr_running is greater than 1,
nohz_kick will be needed, regardless of whether the current CPU has
successfully competed for the first or second cpu spot

Previous logic has the corner case that if current CPU has r_running more than
1, and two other CPUs alreay hold first and econd cpu spot, but they don't
meeting kicking criterial (first cpu has nr_running 1, and second cpu doesn't
have any load), then nohz_kick will not be set correctly.

Change-Id: I30790f22df0a2e90899daa44c67757284dcca25d
Signed-off-by: Xin Qi <xqi@codeaurora.org>
sched/nohz: Fix logic in run_rebalance_domains

If triggered by nohz_balancer_kick, idle_at_tick is not updated
accordingly.  Update myself at this moment right before it is used

Change-Id: I20dd4314159e70f955ffe482160c8867c65c261e
Signed-off-by: Xin Qi <xqi@codeaurora.org>
sched/nohz: Fix logic in trigger_load_balance

Whether we need to kick nohz doesn't depend on current rq->next_balance,
meaning it doesn't depend on the check of previous if condition.

Change-Id: I566011d6341fa7a9a700c834f77e129043eaba11
Signed-off-by: Xin Qi <xqi@codeaurora.org>
ram_console: set CON_ANYTIME console flag

We want to ensure that we get all the console messages, even ones
that occur while the printing CPU is not yet online.

Change-Id: I1d2694d05ac9415669a92f38efdd8e71c927705b
Signed-off-by: Dima Zavin <dima@android.com>
d2: Disable the verbose ramconsole printks

 * Although this is really nice, it's introducing some nasty latency
   into the kernel. It's easily seen by typing quickly on the soft
   keyboard with haptics enabled. Haptics will often fire at 2x or 3x
   the duration.

Change-Id: I6b294da1c53eee130f3c0ea3688a14aee496cba7
d2: Update defconfig

 * Enable FAIR_GROUP_SCHED

Change-Id: I7a6f96e2f84c58b3fa8835ceaa81e6fa8dbf2682
Merge d2spr LG8 source release.

Conflicts (reverted to previous):
	arch/arm/configs/m2_vzw_defconfig
	arch/arm/configs/m2_vzw_eng_defconfig

Change-Id: I70859dd9aeffffc4392a881ba5af476b8bffe076

Conflicts(reverted to previous patch):
	drivers/base/genlock.c
	drivers/gpu/ion/ion_cp_heap.c
	drivers/video/msm/mdp4.h
	drivers/video/msm/mdp4_overlay.c
vidc: Migrate to ion_map_iommu() API.

Migrate video driver to use the ion_map_iommu() api,
this api provides the physical address if IOMMU is
not enabled.
If IOMMU is enabled in the system it provides the
virtual contigious address.

Change-Id: I0f6f7c50865cb3da88a0ee13425e3973037c846a
Signed-off-by: Arun Menon <menon@codeaurora.org>

Conflicts:

	drivers/video/msm/vidc/common/dec/vdec.c
vidc: Move shared memory to firmware heap

if smmu is enabled then the memory needs to be
mapped as cached for IOMMU heap, moving the
shared mmeory to firmware heap which does not
require cached mapping

Change-Id: Iac14169b1063bd2784ebf7df433614d68830e84a
Signed-off-by: Arun Menon <menon@codeaurora.org>
vidc: Move metadata shared input mem to firmware heap.

Metadata shared input is used to communicate between
the video code and video driver, hence make this buffer
as uncached and allocate it from firmware heap.

Change-Id: Iabcf6fdbdf6ebcae2fef60b9163a3dfa862624f6
Signed-off-by: Arun Menon <menon@codeaurora.org>
vidc: Migrate to new ION cache ops API

New cache ops API are provided thru ION interface
migrating the in kernel cache ops to use the
new cache ops API.

Change-Id: I18502d343c40fc0f36d979898939f0e601e2f685
Signed-off-by: Arun Menon <menon@codeaurora.org>
vidc: For CP2.0 do not program the iommu.

For CP2.0 do not call the ion_map_iommu api
use the ion_phys api to get the physical address

Change-Id: I67ebc8debf064afb78133afe75aee368b6394178
Signed-off-by: Arun Menon <menon@codeaurora.org>
msm: camera: add fields to msm_stats_buf for cache operations.

Add a couple of fields to the msm_stats_buf structure
for cache coherence support on stats buffers from
user-space.

(cherry picked from commit 073e0cab00d6cf60279de167d8063c5e5f4b5715)

Change-Id: I4358bb9f8fff444d9879e351af29e47513d114ed
Signed-off-by: Ankit Premrajka <ankitp@codeaurora.org>
(cherry picked from commit 490e18c8ccde8c4450d20781faf7529c8c9d1512)
(cherry picked from commit 1467469bb4783e9fd18f2081b2c3eb044815e22b)
gpu: ion: Add support for IOMMU in CP heap

ION clients allocating from a content protection
heap (cp heap) must be able to map the memory to
an IOMMU when IOMMU are being used.

Add callbacks to CP heap to support IOMMU mapping.

(cherry picked from commit 1c94f7be2d3fcd48978bd5276532beec184f5d74)

Change-Id: I81e726e98b8cc4b12fe8f4734c0da18a15968aee
Signed-off-by: Olav Haugan <ohaugan@codeaurora.org>
(cherry picked from commit c8652e6b9a8e477513cf1f10563182a400b7cc65)
msm: Disable use of the IOMMU

Originally, if CONFIG_MSM_IOMMU was enabled, clients were
expected to use the iommu for memory mapping. Currently,
it is necessary for CONFIG_MSM_IOMMU to be enabled without
having all clients ready to use the iommu. Kill support for
APIs to use the IOMMU and attaching to all domains until
clients are ready to actually use them.

(cherry picked from commit d561f347895358028851dfa52397899048747a6d)

Change-Id: Ic7189c713722bb00cb556a3a1b01df41372a321e
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
(cherry picked from commit d813a2df8c1c3409020a8b7009dd790527b8a09f)
gpu: ion: Lower IOMMU heap priority

Video requires the IOMMU heap to be at a lower
priority so that video can try to allocate from
its MM carveout heap first and then if video needs
more memory and the MM heap is exhausted it will
automatically fall back on IOMMU heap.

Change the priority of the IOMMU heap so video
can fall back on IOMMU heap.

(cherry picked from commit 9e123f98ea133518adb5b1f4a53ccaa1c07cb568)

Change-Id: I696c292b0ad9d6b140247f32e2e22d72c5fd0000
Signed-off-by: Olav Haugan <ohaugan@codeaurora.org>
(cherry picked from commit 1c94ada9be7922d8770c92cd79217ebf005fbf27)
(cherry picked from commit cb1cf4a5f754932b9c8e19eeaf90114a2b35c51b)
msm: Add new partition for IOMMU video domain

Video hardware requires its firmware address to be lower
than the the other addresses that it accesses. In addition
secure playback requires the end of the firmware address
range to be adjacent to the main memory used by the video
hardware.

Add a new partition and rename partitions to appropriate names
to enforce the order of the memory regions.

(cherry picked from commit ee365366b99d0f5f51ff27f9fe7637a792042417)

Change-Id: Ide78cddb45373b456d5efdc2b7c7fe65fd20b29d
Signed-off-by: Olav Haugan <ohaugan@codeaurora.org>
(cherry picked from commit 3cbb57653580cd5dc30100cb6203c7d0e5c3141f)
gpu: ion: Add missing argument to iommu map func

There exists one definition for ion_map_iommu
function when ION is enabled and one definition when
ION is disabled. The argument list for the definition used
when ION is disabled is missing the buffer_size argument causing
compilation error for targets that call this function without
ION enabled.

Add buffer_size argument to ion_map_iommu function
for targets that does not have ION enabled.

(cherry picked from commit 9a27d4c55b862eecc1c5eacb7fc0185957b851a0)

Change-Id: I135f748ef61ece79c2c61c1e1e2478bb7174c61c
Signed-off-by: Olav Haugan <ohaugan@codeaurora.org>
(cherry picked from commit 70371b7cf9d0b280178c26dfbd95e649d2fbfdb9)
gpu: ion: Do not allow cached IOMMU mappings.

Cached IOMMU mapping is not supported.

Add check for clients trying to map buffers
into IOMMU as cached and return error.

(cherry picked from commit 79e9ffa55afdf664990b2765de297f3d95e59612)

Change-Id: I92bde98a816afb2c3b231e91902b4443774c2b85
Signed-off-by: Olav Haugan <ohaugan@codeaurora.org>
(cherry picked from commit 82836cc1818a9a428e5acfbb4f9b62f5892f75fe)