From: Bruno Ducrot <ducrot@poupinou.org>

dbs_timer_init() will schedule_work(&dbs_work) so that do_dbs_timer()
is likely called very early at same time slice scheduler, and
for each cpu, dbs_check_cpu(cpu) will be called, likely at the same time
slice than dbs_timer_init().
So far, we will get total_idle_ticks == idle_ticks == 0 unconditonaly,
and the processor will be put at full speed even though it's not needed
at startup.


Ack'ed by Venkatesh Pallipadi.
Signed-off-by: Bruno Ducrot <ducrot@poupinou.org>
Signed-off-by: Dominik Brodowski <linux@brodo.de>
Signed-off-by: Dave Jones <davej@redhat.com>