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In case that after the gathering of sched domain statistics the current load balancing operation is still in energy-aware mode and a least efficient sched group has been found, detect the least efficient cpu by comparing the cpu efficiency (ratio between cpu usage and cpu energy consumption) among all cpus of the least efficient sched group. cc: Ingo Molnar <mingo@redhat.com> cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
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