Revert "sched: fix init NOHZ_IDLE flag"

This reverts commit fb6af1dd10687a16345b986fe5a48a469940703d.
sched: fix init NOHZ_IDLE flag

On my smp platform which is made of 5 cores in 2 clusters, I have the
nr_busy_cpu field of sched_group_power struct that is not null when the
platform is fully idle. The root cause seems to be:
During the boot sequence, some CPUs reach the idle loop and set their
NOHZ_IDLE flag while waiting for others CPUs to boot. But the nr_busy_cpus
field is initialized later with the assumption that all CPUs are in the busy
state whereas some CPUs have already set their NOHZ_IDLE flag.
During the initialization of the sched_domain, we set the NOHZ_IDLE flag when
nr_busy_cpus is initialized to 0 in order to have a coherent configuration.
If a CPU enters idle and call set_cpu_sd_state_idle during the build of the
new sched_domain it will not corrupt the initial state
set_cpu_sd_state_busy is modified and clears the NOHZ_IDLE only if a non NULL
sched_domain is attached to the CPU (which is the case during the rebuild)

Change since V3;
 - NOHZ flag is not cleared if a NULL domain is attached to the CPU
 - Remove patch 2/2 which becomes useless with latest modifications

Change since V2:
 - change the initialization to idle state instead of busy state so a CPU that
   enters idle during the build of the sched_domain will not corrupt the
   initialization state

Change since V1:
 - remove the patch for SCHED softirq on an idle core use case as it was
   a side effect of the other use cases.

Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
mm: accelerate munlock() treatment of THP pages

munlock_vma_pages_range() was always incrementing addresses by PAGE_SIZE
at a time.  When munlocking THP pages (or the huge zero page), this
resulted in taking the mm->page_table_lock 512 times in a row.

We can do better by making use of the page_mask returned by
follow_page_mask (for the huge zero page case), or the size of the page
munlock_vma_page() operated on (for the true THP page case).

Signed-off-by: Michel Lespinasse <walken@google.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Updated kernel zip binary + asserts only for SG2 + CPU freq max 1.0Ghz fix.
Some CPU chips detected as max 1.0Ghz and not allower to have high freq.
i have allowed them to get max 1.4Ghz.