18  * @cost:	The cost coefficient associated with this level, used during
25 	unsigned long cost;  member
34  * but a lower or equal power cost. Such inefficient states are ignored when
104  * which would reduce big value stored in the 'cost' field, then multiply by
106  * e.g. power ~1.3 Watt at max freq, so the 'cost' value > 1mln micro-Watts.
108  * could be 4096, then multiplication: 'cost' * 'sum_util'  would overflow.
115 #define em_estimate_energy(cost, sum_util, scale_cpu) \  argument
116 	(((cost) * (sum_util)) / (scale_cpu))
118 #define em_estimate_energy(cost, sum_util, scale_cpu) \  argument
119 	(((cost) / (scale_cpu)) * (sum_util))
146 	 * get_cost() - Provide the cost at the given performance state of
150 	 * @cost	: The cost value for the performance state
153 	 * In case of CPUs, the cost is the one of a single CPU in the domain.
160 			unsigned long *cost);
287 	 * as 'ps->cost'.  in em_cpu_energy()
290 	 * share the same 'ps->cost', and the same CPU capacity. Hence, the  in em_cpu_energy()
294 	 *            ps->cost * \Sum cpu_util  in em_cpu_energy()
298 	return em_estimate_energy(ps->cost, sum_util, scale_cpu);  in em_cpu_energy()