usb: Decrease autosuspend delay to 200ms upon usb disconnect

Reduce overall HSIC wakelock active time by decreasing autosuspend
delay for HSIC mdm device from 1 sec to 200ms. However when diag is
active it would send poll events for every 500ms causing frequent
supsend/resume. Avoid this by increasing autosuspend delay to 1 sec
when diag is active. Also, set autosuspend delay for root hub to 0 by
default. These changes reduce time HSIC controller is active when the
bus is idle for better power savings.

CRs-Fixed: 404378
Change-Id: I0500f6b125dff158e6e0c10f3f2023b18ce9dd30
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>
EHCI: HSIC: Allow standalone power collapse when HSIC is active

HSIC generates interrupt at 4ms interval. If idle power collapse
is enabled when HSIC is active, krait keeps on going into idle
power collapse requesting RPM to handle the sleep set requirement.
If HSIC interrupt comes after 4ms interval, krait comes out of idle
power collapse and it again ask RPM to handle this request therefore
keeps RPM busy handling requests due to frequent idle power collapse.
This has a power impact. Hence only allow standalone power collapse
when HSIC is active to avoid RPM involvement in assisting kraits to
power collapse. Vote for idle power collapse when HSIC goes to low
power mode.

Change-Id: Iee8bc1fa180499f2d26fbac955a6a6ed767fdeb4
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>
EHCI: HSIC: Disable CPU Idle states before resuming the port

The CPU idle states are disabled to reduce the USB GPT interrupt
latency during bus resume.  The pm_qos_update_request() is blocked
until all the online cores are brought out of idle states. If this
call is blocked for longer time than resume signaling, the resume
sequence is repeated again.  Fix it by calling pm_qos_update_request()
before resuming the port.  This patch also fixes a trivial bug related
to swfi_latency and standalone_latency handling in resume and reset
paths.

CRs-Fixed: 515547
Change-Id: I651910bf3ac296914af3642718bca3aa07d0d407
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
usb: Add support to set autosuspend delay by controller driver

USB core driver sets the autosuspend delay to 1 sec for root hub and
its children by default. In case if delay needs to be changed for a
particular controller, it requires class driver to explicitly call
PM API to set the new values. Hence add a call back handler to set
autosuspend delay in controller driver. This makes class driver code
generic.

Change-Id: I62121651f0a9648a2909ca7eb4081a6c2567ed01
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>
mm: compaction: fix bit ranges in {get,clear,set}_pageblock_skip()

{get,clear,set}_pageblock_skip() use incorrect bit ranges (please compare
to bit ranges used by {get,set}_pageblock_flags() used for migration
types) and can overwrite pageblock migratetype of the next pageblock in
the bitmap.

Change-Id: I5e1dc0cf62fe681d332b86a6cdfacb838d6e0415
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Mel Gorman <mgorman@suse.de>
Tested-by: Thierry Reding <thierry.reding@avionic-design.de>
Acked-by: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Git-commit: 627260595ca6abcb16d68a3732bac6b547e112d6
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
mm: Don't use CMA pages for page cache

All layers of the page cache may take extra references to
pages to avoid migration. This is fine for general movable
pages but renders CMA pages useless as they cannot be
allocated for contiguous mode. Always omitting movable
pages completely has poor utilization of memory so attempt
with the given GFP flags first and if a CMA page is allocated,
free it and get a new non-movable page. This does have a minor
performance impact, but ultimately it's a tradeoff between
never using movable pages and taking the extra hit of a
free/realloc.

Change-Id: I4e9d7fc1c65306d6356492fd1a99935aa62ed2ec
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
mms: rng: Add bus bandwidth support to PRNG

PRNG has to use pnoc clock, but pnoc is a bus clock & clients cannot
directly call pnoc apis, so prng calls bus bandwidth api to get the
clock cycles.

Change-Id: Ib3cd075097b4b70f82ec6325535e6e39808c6408
Signed-off-by: Hariprasad Dhalinarasimha <hnamgund@codeaurora.org>
kernel: rng: Add IOCTL support to disable bus bandwidth

QRNG bus scale is set to high before qrng_read & set to
low after qrng_read, this impacts the performance during
boot-up, as there are various clients using qrng during
bootup. Inorder to fix this problem, a daemon is introduced
which calls into kernel module (that sets low bandwidth).
This change supports the IOCTL call to disable the bus bandwidth.

Change-Id: I386d1eb4c50c057ae2852e7f9d47c8db8e522ca5
Signed-off-by: Hariprasad Dhalinarasimha <hnamgund@codeaurora.org>