msm: msm_bus: Fix the type error causing bandwidth overflow

On legacy chipsets, long int was being used to store
return value after calculating interleaved bw. However,
NoCs support 64-bit integers ab/ib values. problme occurs
if client request for higher bw and if difference of ab
value exceeds the range of 32 bit integer, the Value
overflows and turns negative, which leads to wrong bw calculation.

This patch fixes this integer overflow by correcting argument
type to store bw.

CRs-Fixed: 537213
Change-Id: I8c6c79ba245a988c2c54ccaca3f3eaf5cb857ce5
Signed-off-by: Alok Chauhan <alokc@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
msm: msm_bus: send correct value to bw division function

While calculating bw for existing client request
sometimes it can go to negative if client unregisters
or send request with lesser ab/ib values. Bus driver
will divide bandwidth if interleaving enabled.

Added a macro wrapper to handle negative bw values
since the division utility function can't handle
negative values

CRs-Fixed: 521940
Change-Id: Ic3a216b8efb535593fe02ad3228d71808d2e0f98
Signed-off-by: Alok Chauhan <alokc@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
sched/fair: Optimize find_busiest_queue()

Use for_each_cpu_and() and thereby avoid computing the capacity for
CPUs we know we're not interested in.

Reviewed-by: Paul Turner <pjt@google.com>
Reviewed-by: Preeti U Murthy <preeti@linux.vnet.ibm.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/n/tip-lppceyv6kb3a19g8spmrn20b@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Paul Reioux <reioux@gmail.com>

backported for Linux 3.4

Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>

Conflicts:
	kernel/sched/fair.c

Change-Id: I6dfdf533329288d56e27df51f3dcbb6a444594dc
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>