ARM: 7182/1: ARM cpu topology: fix warning

kernel/sched.c:7354:2: warning: initialization from incompatible pointer type

Align cpu_coregroup_mask prototype interface with sched_domain_mask_f typedef
use int cpu instead of unsigned int cpu

Cc: <stable@vger.kernel.org>
Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
ARM: cpu topology: Enable ARCH_POWER

Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
ARM: topology: save cpu id of each core
ARM: topology: Update topology according to current sched_mc mode
ARM: topology: Add a cpu_power function
ARM: topology: Add a topology update notification
ARM: cpu topology: Add asym topology flag for using cpu0 1st

Modify the CPU sched_domain flags in powersave mode for using the cpu0 in ched_mc powersave mode

Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
ARM: cpu topology: add debugfs
cpupower: update the cpu_power according to cpu load

This driver updates the capacity of each core according to current
sched_mc level and cpu frequency (in fact current cpu load)

When the lowest frequencies are used, we are in a light load use case
and we increase the cpu capacity to keep these light tasks on CPU0

Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
sched: use cpu capacity to decide if a ILB is needed

Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
sched: Ensure cpu_power periodic update

With a lot of small tasks, the softirq sched is nearly never called
when no_hz is enabled. In this case load_balance() is mainly called
with the newly_idle mode which doesn't update the cpu_power.

Add a next_update field which ensure a maximum update period when
there is short activity.

Having stale cpu_power information can skew the load-balancing
decisions, this is cured by the guaranteed update.

Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1323717668-2143-1-git-send-email-vincent.guittot@linaro.org
defconfigs: Enable SCHED_MC

To make use of more ARM CPU topology functions
Fix kernel section mismatches

Change-Id: Idd707dbaee22b094a8927048d6dbc42e67624c78