Lines Matching +full:cpu +full:- +full:capacity

1 // SPDX-License-Identifier: GPL-2.0
11  * Dynamically calculates the optimum number of high capacity COREs
13  * that a capacity update is necessary, it schedules a topology update.
14  * During topology updates the CPU capacities are always re-adjusted.
16  * There is two places where CPU capacities are being accessed within
18  * -> hiperdispatch's reoccuring work function reads CPU capacities to
19  *    determine high capacity CPU count.
20  * -> during a topology update hiperdispatch's adjustment function
21  *    updates CPU capacities.
33  * of them high capacity.
37  * - single CORE, with N threads, running N tasks
38  * - N separate COREs running N tasks,
73 static int hd_high_capacity_cores;	/* Current CORE count with high capacity */
77 static unsigned long hd_previous_steal;	/* Previous iteration's CPU steal timer total */
78 static unsigned long hd_high_time;	/* Total time spent while all cpus have high capacity */
79 static unsigned long hd_low_time;	/* Total time spent while vl cpus have low capacity */
107 void hd_add_core(int cpu)
113 	polarization = smp_cpu_get_polarization(cpu);
114 	siblings = topology_sibling_cpumask(cpu);
124 		cpumask_set_cpu(cpu, &hd_vl_coremask);
159 	int cpu, upscaling_cores;
160 	unsigned long capacity;
162 	upscaling_cores = hd_high_capacity_cores - hd_entitled_cores;
163 	capacity = upscaling_cores > 0 ? CPU_CAPACITY_HIGH : CPU_CAPACITY_LOW;
165 	for_each_cpu(cpu, &hd_vl_coremask) {
166 		smp_set_core_capacity(cpu, capacity);
167 		if (capacity != CPU_CAPACITY_HIGH)
170 		upscaling_cores--;
172 			capacity = CPU_CAPACITY_LOW;
203 	steal = (steal * (HD_STEAL_AVG_WEIGHT - 1) + new) / HD_STEAL_AVG_WEIGHT;
211 	int cpus, cpu;
217 	for_each_cpu(cpu, &hd_vmvl_cpumask) {
218 		steal += kcpustat_cpu(cpu).cpustat[CPUTIME_STEAL];
230 		steal_delta = (steal - hd_previous_steal) * 100 / time_delta;
247 	 * Normally this check is handled on topology update, but during cpu
248 	 * unhotplug, topology and cpu mask updates are done in reverse
278 		.procname	= ctl->procname,
323 		return -ERANGE;
349 		return -ERANGE;
414 	if (sysfs_create_group(&dev->kobj, &hd_attr_group))