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cpufreq is currently keeping it a secret which cpus are sharing clock source. The scheduler needs to know about clock domains as well to become more energy aware. The SD_SHARE_CAP_STATES domain flag indicates whether cpus belonging to the sched_domain share capacity states (P-states). There is no connection with cpufreq (yet). The flag must be set by the arch specific topology code. cc: Russell King <linux@arm.linux.org.uk> cc: Ingo Molnar <mingo@redhat.com> cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Morten Rasmussen <morten.rasmussen@arm.com>