cpufreq: powernv: Define per_cpu chip pointer to optimize hot-path
Commit 96c4726f "cpufreq: powernv: Remove cpu_to_chip_id() from hot-path" introduced a 'core_to_chip_map' array to cache the chip-ids of all cores. Replace this with a per-CPU variable that stores the pointer to the chip-array. This removes the linear lookup and provides a neater and simpler solution. Signed-off-by: NMichael Neuling <mikey@neuling.org> Signed-off-by: NShilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com> Acked-by: NViresh Kumar <viresh.kumar@linaro.org> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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