gpu: ion: Add ion_page_pool.

This patch adds a new utility heaps can use to manage
memory.  In the past we have found it can be very
expensive to manage the caches when allocating memory,
but it is imposible to know whether a previous user of a
given memory allocation had a cached mapping. This patch
adds the ability to store a pool of pages that were
previously used uncached so that cache maintenance
only need be done when growing this pool.  The pool also
contains a shrinker so memory from the pool can be
recovered in low memory conditions.

Change-Id: I686fd7d192060fd32d34ef66471f62b7829006ee
Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
gpu: ion: Use the ion_page_pool from the system heap

With this change the system heap will use pagepools to avoid
having to invalidate memory when it is allocated, a
significant performance improvement on some systems.

Change-Id: I96ab778d67c4b19805883dcfa44d750811cdff48
Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
gpu: ion: Modify gfp flags in ion_system_heap

When allocations larger than order 4 are made, use _GFP_NORETRY
and __GFP_NO_KSWAPD so kswapd doesn't get kicked off to reclaim
these larger chunks.  For smaller allocaitons, these are
unnecessary, as the system should be able to reclaim these.

Change-Id: I6b45cd1a595d25cc39622e3dbcc04d84fa1b7db8
Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
cpufreq: interactive: run at fraction of hispeed_freq when load is low

When load is below go_hispeed_load, apply the percentage of CPU load to
a max frequency of hispeed_freq instead of the max speed.  This avoids
jumping too quickly to hispeed_freq when it is a relatively low
percentage of max speed.  This also allows go_hispeed_load to be set to
a high percentage relative to hispeed_freq (as a percentage of max speed,
again useful when hispeed_freq is a low fraction of max speed), to cap
larger loads at hispeed_freq.  For example, a load of 60% will typically
move to 60% of hispeed_freq, not 60% of max speed.  This causes the
governor to apply two different speed caps, depending on whether load is
below or above go_hispeed_load.

Also fix the type of hispeed_freq, which was u64, to match other
speed data types (and avoid overhead and allow division).

Change-Id: Ie2d0668be161c074aaad77db2037505431457b3a
Signed-off-by: Todd Poynor <toddpoynor@google.com>
net: wireless: bcmdhd: Increase scan unassoc active time to 80 ms

BUG: 7088022

Change-Id: Ie38ff2bf657a65ef3f2e0102cd9f7003f1097f5c
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
power: android-battery: add charge timeouts and recharge logic

Add recharge logic when voltage threshold reached.

Add charge and recharge timeouts.

Change-Id: I3ef3b926ce694115dde7f8056072bef63884a5d0
Signed-off-by: HongMin Son <hongmin.son@samsung.com>
Signed-off-by: Todd Poynor <toddpoynor@google.com>
power: smb347: Fix message newline

Change-Id: Iec41b38212d85866ab32e3c233ab5a2bead169ca
Signed-off-by: Todd Poynor <toddpoynor@google.com>
power: android-battery: Add state locking

Change-Id: I83abd61f0ee2541f5406258b2c07f76af7d2acb5
Signed-off-by: Todd Poynor <toddpoynor@google.com>
power: android-battery: leave full/not-charging status when charger re-sensed

If charger was connected and a charge source change event occurs such that
the charger is still connected (or a different charge source connected),
do not overwrite an existing state such as full or not-charging.  Only
switch from discharging to charging on a charge source change event.

Change-Id: I1b841c8f3a92bf15074999e18b17d1d19ce028d7
Signed-off-by: Todd Poynor <toddpoynor@google.com>