ARM: dts: msm: Increase OCMEM BW request for video decode

There are framedrops observed on high bitrate clips because
OCMEM BW is not sufficient for these clips. Increase OCMEM BW
to avoid framedrops.

Change-Id: I7f3238036259e43a12899f2f7c73318328ae8eca
CRs-fixed: 571634
Signed-off-by: Vinay Kalia <vkalia@codeaurora.org>
Signed-off-by: flar2 <asegaert@gmail.com>
net: loopback: set default mtu to 64K

loopback current mtu of 16436 bytes allows no more than 3 MSS TCP
segments per frame, or 48 Kbytes. Changing mtu to 64K allows TCP
stack to build large frames and significantly reduces stack overhead.

Performance boost on bulk TCP transferts can be up to 30 %, partly
because we now have one ACK message for two 64KB segments, and a lower
probability of hitting /proc/sys/net/ipv4/tcp_reordering default limit.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: flar2 <asegaert@gmail.com>
arm/dt: msm8974: Increase "ib" values for VIDC DDR bandwidth request

As per the recommendation by performance team, update the
"ib" values for DDR BW requests. This change fixes the
display under-runs seen during video playback.

Change-Id: I137814c82b257b8c751dab9df4f705e43fd5643e
Signed-off-by: Vinay Kalia <vkalia@codeaurora.org>
Signed-off-by: flar2 <asegaert@gmail.com>
ARM: dts: msm: increase adsp heap size for msm8974

For hevc hybrid codec, adsp heap size needs to be increased to
64MB to support 1080p video.

Change-Id: I3812cc2f0204f18fbade9ae41d8e784909055569
Signed-off-by: Arun Menon <avmenon@codeaurora.org>
Signed-off-by: flar2 <asegaert@gmail.com>
stereo call recording support

Change-Id: I934c252283d1346f9c1f6cf786ce2f661f20a049

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

Signed-off-by: flar2 <asegaert@gmail.com>
msm: thermal: Update to speed up bootup time

Update KTM driver to remove flush_scheduled_work that
would introduce bootup delay. This patch replaces
cancel_delayed_work with cancel_delayed_work_sync
to cancel a delayed work.

CRs-Fixed: 647439
Change-Id: Ie81278ca3a7a58f8f46463f7149b512bd07cbcbc
Signed-off-by: Shiju Mathew <shijum@codeaurora.org>
Signed-off-by: flar2 <asegaert@gmail.com>
fs: exfat: Update to v1.2.8

Conflicts:
	fs/exfat/Makefile
	fs/exfat/exfat_core.c
	fs/exfat/exfat_version.h
softirq: reduce latencies

In various network workloads, __do_softirq() latencies can be up
to 20 ms if HZ=1000, and 200 ms if HZ=100.

This is because we iterate 10 times in the softirq dispatcher,
and some actions can consume a lot of cycles.

This patch changes the fallback to ksoftirqd condition to :

- A time limit of 2 ms.
- need_resched() being set on current task

When one of this condition is met, we wakeup ksoftirqd for further
softirq processing if we still have pending softirqs.

Using need_resched() as the only condition can trigger RCU stalls,
as we can keep BH disabled for too long.

I ran several benchmarks and got no significant difference in
throughput, but a very significant reduction of latencies (one order
of magnitude) :

In following bench, 200 antagonist "netperf -t TCP_RR" are started in
background, using all available cpus.

Then we start one "netperf -t TCP_RR", bound to the cpu handling the NIC
IRQ (hard+soft)

Before patch :

# netperf -H 7.7.7.84 -t TCP_RR -T2,2 -- -k
RT_LATENCY,MIN_LATENCY,MAX_LATENCY,P50_LATENCY,P90_LATENCY,P99_LATENCY,MEAN_LATENCY,STDDEV_LATENCY
MIGRATED TCP REQUEST/RESPONSE TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET
to 7.7.7.84 () port 0 AF_INET : first burst 0 : cpu bind
RT_LATENCY=550110.424
MIN_LATENCY=146858
MAX_LATENCY=997109
P50_LATENCY=305000
P90_LATENCY=550000
P99_LATENCY=710000
MEAN_LATENCY=376989.12
STDDEV_LATENCY=184046.92

After patch :

# netperf -H 7.7.7.84 -t TCP_RR -T2,2 -- -k
RT_LATENCY,MIN_LATENCY,MAX_LATENCY,P50_LATENCY,P90_LATENCY,P99_LATENCY,MEAN_LATENCY,STDDEV_LATENCY
MIGRATED TCP REQUEST/RESPONSE TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET
to 7.7.7.84 () port 0 AF_INET : first burst 0 : cpu bind
RT_LATENCY=40545.492
MIN_LATENCY=9834
MAX_LATENCY=78366
P50_LATENCY=33583
P90_LATENCY=59000
P99_LATENCY=69000
MEAN_LATENCY=38364.67
STDDEV_LATENCY=12865.26

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: David Miller <davem@davemloft.net>
Cc: Tom Herbert <therbert@google.com>
Cc: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Francisco Franco <franciscofranco.1990@gmail.com>
GPU Simple Governor: adapt GPU Simple Governor for Snapdrgaon 800 SOCs

initial coding for a Simple GPU governor based on my own work 2 years ago
from Sensation GB kernel commit: c1ea8f6

Signed-off-by: Paul Reioux <reioux@gmail.com>
Simple GPU governor: fix a merge derp

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