162 lines
3.2 KiB
C
162 lines
3.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2019 MediaTek Inc.
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*/
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#include <linux/cpufreq.h>
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#include "sched.h"
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struct eas_data {
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struct attribute_group *attr_group;
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struct kobject *kobj;
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int init;
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};
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struct eas_data eas_info;
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/* Try to get information of all CPUs */
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int show_cpu_info(char *buf, int buf_size)
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{
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int cpu;
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int len = 0;
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for_each_possible_cpu(cpu) {
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len += snprintf(buf+len, buf_size-len,
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"cpu=%d max=%4uMHz curr=%4uMHz ",
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cpu,
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/* Max frequency (limited by ceiling) */
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cpu_online(cpu)?cpufreq_quick_get_max(cpu):0,
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/* Current frequency */
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cpu_online(cpu)?cpufreq_quick_get(cpu):0
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);
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len += snprintf(buf+len, buf_size-len,
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"orig_cap=%4lu limit_cap=%4lu cur_cap=%4lu ",
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/* Original capacity */
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cpu_online(cpu)?capacity_orig_of(cpu):0,
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/* Ceiling limited capacity */
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cpu_online(cpu)?cpu_rq(cpu)->cpu_capacity:0,
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/* Current capacity */
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cpu_online(cpu)?cap_scale(capacity_orig_of(cpu),
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arch_scale_freq_capacity(cpu)):0
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);
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len += snprintf(buf+len, buf_size-len,
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#ifdef CONFIG_SCHED_TUNE
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"boost=%4lu cfs=%4lu rt=%4lu (%s)\n",
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/* cpu boost utilization */
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cpu_online(cpu)?stune_util(cpu,
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cpu_util_rt(cpu_rq(cpu))):0,
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#else
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"cfs=%4lu rt=%4lu (%s)\n",
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#endif
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/* cpu cfs utilization */
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cpu_online(cpu)?cpu_util_cfs(cpu_rq(cpu)):0,
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/* cpu rt utilization */
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cpu_online(cpu)?cpu_util_rt(cpu_rq(cpu)):0,
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/* cpu on/off */
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cpu_online(cpu)?"on":"off"
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);
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}
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return len;
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}
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#if defined(CONFIG_ENERGY_MODEL) && defined(CONFIG_CPU_FREQ_GOV_SCHEDUTIL)
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int show_perf_order_domain_info(char *buf, int buf_size)
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{
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struct perf_order_domain *domain;
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int len = 0;
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len += snprintf(buf+len, buf_size-len,
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"Sort perf_domains from little to big:\n"
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);
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if (!pod_is_ready()) {
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len += snprintf(buf+len, buf_size-len,
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"Perf order domain is not ready!\n"
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);
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return len;
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}
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for_each_perf_domain_ascending(domain) {
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len += snprintf(buf+len, buf_size-len,
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" cpumask: 0x%02lx\n",
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*cpumask_bits(&domain->possible_cpus)
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);
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}
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return len;
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}
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#endif
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static ssize_t show_eas_info_attr(struct kobject *kobj,
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struct kobj_attribute *attr, char *buf)
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{
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unsigned int len = 0;
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unsigned int max_len = 4096;
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len += show_cpu_info(buf+len, max_len - len);
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#if defined(CONFIG_ENERGY_MODEL) && defined(CONFIG_CPU_FREQ_GOV_SCHEDUTIL)
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len += show_perf_order_domain_info(buf+len, max_len - len);
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#endif
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return len;
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}
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static struct kobj_attribute eas_info_attr =
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__ATTR(info, 0400, show_eas_info_attr, NULL);
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static struct attribute *eas_attrs[] = {
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&eas_info_attr.attr,
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NULL,
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};
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static struct attribute_group eas_attr_group = {
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.attrs = eas_attrs,
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};
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static int init_eas_attribs(void)
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{
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int err;
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eas_info.attr_group = &eas_attr_group;
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/* Create /sys/devices/system/cpu/eas/... */
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eas_info.kobj = kobject_create_and_add("eas",
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&cpu_subsys.dev_root->kobj);
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if (!eas_info.kobj)
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return -ENOMEM;
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err = sysfs_create_group(eas_info.kobj, eas_info.attr_group);
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if (err)
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kobject_put(eas_info.kobj);
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else
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kobject_uevent(eas_info.kobj, KOBJ_ADD);
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return err;
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}
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static int __init eas_stats_init(void)
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{
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int ret = 0;
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eas_info.init = 0;
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ret = init_eas_attribs();
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if (ret)
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eas_info.init = 1;
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return ret;
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}
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late_initcall(eas_stats_init);
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