Lines Matching full:cpu
3 * Arch specific cpu topology information
10 #include <linux/cpu.h>
66 void topology_set_cpu_scale(unsigned int cpu, unsigned long capacity) in topology_set_cpu_scale() argument
68 per_cpu(cpu_scale, cpu) = capacity; in topology_set_cpu_scale()
77 int cpu; in topology_set_thermal_pressure() local
79 for_each_cpu(cpu, cpus) in topology_set_thermal_pressure()
80 WRITE_ONCE(per_cpu(thermal_pressure, cpu), th_pressure); in topology_set_thermal_pressure()
88 struct cpu *cpu = container_of(dev, struct cpu, dev); in cpu_capacity_show() local
90 return sysfs_emit(buf, "%lu\n", topology_get_cpu_scale(cpu->dev.id)); in cpu_capacity_show()
101 struct device *cpu; in register_cpu_capacity_sysctl() local
104 cpu = get_cpu_device(i); in register_cpu_capacity_sysctl()
105 if (!cpu) { in register_cpu_capacity_sysctl()
106 pr_err("%s: too early to get CPU%d device!\n", in register_cpu_capacity_sysctl()
110 device_create_file(cpu, &dev_attr_cpu_capacity); in register_cpu_capacity_sysctl()
155 int cpu; in topology_normalize_cpu_scale() local
161 for_each_possible_cpu(cpu) { in topology_normalize_cpu_scale()
162 capacity = raw_capacity[cpu] * per_cpu(freq_factor, cpu); in topology_normalize_cpu_scale()
167 for_each_possible_cpu(cpu) { in topology_normalize_cpu_scale()
168 capacity = raw_capacity[cpu] * per_cpu(freq_factor, cpu); in topology_normalize_cpu_scale()
171 topology_set_cpu_scale(cpu, capacity); in topology_normalize_cpu_scale()
172 pr_debug("cpu_capacity: CPU%d cpu_capacity=%lu\n", in topology_normalize_cpu_scale()
173 cpu, topology_get_cpu_scale(cpu)); in topology_normalize_cpu_scale()
177 bool __init topology_parse_cpu_capacity(struct device_node *cpu_node, int cpu) in topology_parse_cpu_capacity() argument
199 raw_capacity[cpu] = cpu_capacity; in topology_parse_cpu_capacity()
201 cpu_node, raw_capacity[cpu]); in topology_parse_cpu_capacity()
204 * Update freq_factor for calculating early boot cpu capacities. in topology_parse_cpu_capacity()
205 * For non-clk CPU DVFS mechanism, there's no way to get the in topology_parse_cpu_capacity()
211 per_cpu(freq_factor, cpu) = in topology_parse_cpu_capacity()
239 int cpu; in init_cpu_capacity_callback() local
247 pr_debug("cpu_capacity: init cpu capacity for CPUs [%*pbl] (to_visit=%*pbl)\n", in init_cpu_capacity_callback()
253 for_each_cpu(cpu, policy->related_cpus) in init_cpu_capacity_callback()
254 per_cpu(freq_factor, cpu) = policy->cpuinfo.max_freq / 1000; in init_cpu_capacity_callback()
276 * on ACPI-based systems we need to use the default cpu capacity in register_cpufreq_notifier()
277 * until we have the necessary code to parse the cpu capacity, so in register_cpufreq_notifier()
311 * This function returns the logic cpu number of the node.
313 * (1) logic cpu number which is > 0.
315 * there is no possible logical CPU in the kernel to match. This happens
317 * CPU nodes in DT. We need to just ignore this case.
323 int cpu; in get_cpu_for_node() local
325 cpu_node = of_parse_phandle(node, "cpu", 0); in get_cpu_for_node()
329 cpu = of_cpu_node_to_id(cpu_node); in get_cpu_for_node()
330 if (cpu >= 0) in get_cpu_for_node()
331 topology_parse_cpu_capacity(cpu_node, cpu); in get_cpu_for_node()
333 pr_info("CPU node for %pOF exist but the possible cpu range is :%*pbl\n", in get_cpu_for_node()
337 return cpu; in get_cpu_for_node()
346 int cpu; in parse_core() local
354 cpu = get_cpu_for_node(t); in parse_core()
355 if (cpu >= 0) { in parse_core()
356 cpu_topology[cpu].package_id = package_id; in parse_core()
357 cpu_topology[cpu].core_id = core_id; in parse_core()
358 cpu_topology[cpu].thread_id = i; in parse_core()
359 } else if (cpu != -ENODEV) { in parse_core()
360 pr_err("%pOF: Can't get CPU for thread\n", t); in parse_core()
369 cpu = get_cpu_for_node(core); in parse_core()
370 if (cpu >= 0) { in parse_core()
372 pr_err("%pOF: Core has both threads and CPU\n", in parse_core()
377 cpu_topology[cpu].package_id = package_id; in parse_core()
378 cpu_topology[cpu].core_id = core_id; in parse_core()
379 } else if (leaf && cpu != -ENODEV) { in parse_core()
380 pr_err("%pOF: Can't get CPU for leaf core\n", core); in parse_core()
425 pr_err("%pOF: cpu-map children should be clusters\n", in parse_cluster()
459 int cpu; in parse_dt_topology() local
463 pr_err("No CPU information found in DT\n"); in parse_dt_topology()
468 * When topology is provided cpu-map is essentially a root in parse_dt_topology()
471 map = of_get_child_by_name(cn, "cpu-map"); in parse_dt_topology()
485 for_each_possible_cpu(cpu) in parse_dt_topology()
486 if (cpu_topology[cpu].package_id == -1) in parse_dt_topology()
498 * cpu topology table
503 const struct cpumask *cpu_coregroup_mask(int cpu) in cpu_coregroup_mask() argument
505 const cpumask_t *core_mask = cpumask_of_node(cpu_to_node(cpu)); in cpu_coregroup_mask()
508 if (cpumask_subset(&cpu_topology[cpu].core_sibling, core_mask)) { in cpu_coregroup_mask()
510 core_mask = &cpu_topology[cpu].core_sibling; in cpu_coregroup_mask()
512 if (cpu_topology[cpu].llc_id != -1) { in cpu_coregroup_mask()
513 if (cpumask_subset(&cpu_topology[cpu].llc_sibling, core_mask)) in cpu_coregroup_mask()
514 core_mask = &cpu_topology[cpu].llc_sibling; in cpu_coregroup_mask()
523 int cpu; in update_siblings_masks() local
526 for_each_online_cpu(cpu) { in update_siblings_masks()
527 cpu_topo = &cpu_topology[cpu]; in update_siblings_masks()
530 cpumask_set_cpu(cpu, &cpuid_topo->llc_sibling); in update_siblings_masks()
538 cpumask_set_cpu(cpu, &cpuid_topo->core_sibling); in update_siblings_masks()
544 cpumask_set_cpu(cpu, &cpuid_topo->thread_sibling); in update_siblings_masks()
548 static void clear_cpu_topology(int cpu) in clear_cpu_topology() argument
550 struct cpu_topology *cpu_topo = &cpu_topology[cpu]; in clear_cpu_topology()
553 cpumask_set_cpu(cpu, &cpu_topo->llc_sibling); in clear_cpu_topology()
556 cpumask_set_cpu(cpu, &cpu_topo->core_sibling); in clear_cpu_topology()
558 cpumask_set_cpu(cpu, &cpu_topo->thread_sibling); in clear_cpu_topology()
563 unsigned int cpu; in reset_cpu_topology() local
565 for_each_possible_cpu(cpu) { in reset_cpu_topology()
566 struct cpu_topology *cpu_topo = &cpu_topology[cpu]; in reset_cpu_topology()
573 clear_cpu_topology(cpu); in reset_cpu_topology()
577 void remove_cpu_topology(unsigned int cpu) in remove_cpu_topology() argument
581 for_each_cpu(sibling, topology_core_cpumask(cpu)) in remove_cpu_topology()
582 cpumask_clear_cpu(cpu, topology_core_cpumask(sibling)); in remove_cpu_topology()
583 for_each_cpu(sibling, topology_sibling_cpumask(cpu)) in remove_cpu_topology()
584 cpumask_clear_cpu(cpu, topology_sibling_cpumask(sibling)); in remove_cpu_topology()
585 for_each_cpu(sibling, topology_llc_cpumask(cpu)) in remove_cpu_topology()
586 cpumask_clear_cpu(cpu, topology_llc_cpumask(sibling)); in remove_cpu_topology()
588 clear_cpu_topology(cpu); in remove_cpu_topology()
622 pr_debug("CPU%u: package %d core %d thread %d\n", in store_cpu_topology()