cpufreq.c (944e9a0316e60bc5bc122e46c1fde36e5f6e9f56) cpufreq.c (72a4ce340a7ebf39e1c6fdc8f5feb4f974d6c635)
1/*
2 * linux/drivers/cpufreq/cpufreq.c
3 *
4 * Copyright (C) 2001 Russell King
5 * (C) 2002 - 2003 Dominik Brodowski <linux@brodo.de>
6 *
7 * Oct 2005 - Ashok Raj <ashok.raj@intel.com>
8 * Added handling for CPU hotplug
9 * Feb 2006 - Jacob Shin <jacob.shin@amd.com>
10 * Fix handling for CPU hotplug -- affected CPUs
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License version 2 as
14 * published by the Free Software Foundation.
15 *
16 */
17
18#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
19
1/*
2 * linux/drivers/cpufreq/cpufreq.c
3 *
4 * Copyright (C) 2001 Russell King
5 * (C) 2002 - 2003 Dominik Brodowski <linux@brodo.de>
6 *
7 * Oct 2005 - Ashok Raj <ashok.raj@intel.com>
8 * Added handling for CPU hotplug
9 * Feb 2006 - Jacob Shin <jacob.shin@amd.com>
10 * Fix handling for CPU hotplug -- affected CPUs
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License version 2 as
14 * published by the Free Software Foundation.
15 *
16 */
17
18#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
19
20#include <asm/cputime.h>
20#include <linux/kernel.h>
21#include <linux/kernel.h>
22#include <linux/kernel_stat.h>
21#include <linux/module.h>
22#include <linux/init.h>
23#include <linux/notifier.h>
24#include <linux/cpufreq.h>
25#include <linux/delay.h>
26#include <linux/interrupt.h>
27#include <linux/spinlock.h>
23#include <linux/module.h>
24#include <linux/init.h>
25#include <linux/notifier.h>
26#include <linux/cpufreq.h>
27#include <linux/delay.h>
28#include <linux/interrupt.h>
29#include <linux/spinlock.h>
30#include <linux/tick.h>
28#include <linux/device.h>
29#include <linux/slab.h>
30#include <linux/cpu.h>
31#include <linux/completion.h>
32#include <linux/mutex.h>
33#include <linux/syscore_ops.h>
34
35#include <trace/events/power.h>

--- 102 unchanged lines hidden (view full) ---

138{
139 if (have_governor_per_policy())
140 return &policy->kobj;
141 else
142 return cpufreq_global_kobject;
143}
144EXPORT_SYMBOL_GPL(get_governor_parent_kobj);
145
31#include <linux/device.h>
32#include <linux/slab.h>
33#include <linux/cpu.h>
34#include <linux/completion.h>
35#include <linux/mutex.h>
36#include <linux/syscore_ops.h>
37
38#include <trace/events/power.h>

--- 102 unchanged lines hidden (view full) ---

141{
142 if (have_governor_per_policy())
143 return &policy->kobj;
144 else
145 return cpufreq_global_kobject;
146}
147EXPORT_SYMBOL_GPL(get_governor_parent_kobj);
148
149static inline u64 get_cpu_idle_time_jiffy(unsigned int cpu, u64 *wall)
150{
151 u64 idle_time;
152 u64 cur_wall_time;
153 u64 busy_time;
154
155 cur_wall_time = jiffies64_to_cputime64(get_jiffies_64());
156
157 busy_time = kcpustat_cpu(cpu).cpustat[CPUTIME_USER];
158 busy_time += kcpustat_cpu(cpu).cpustat[CPUTIME_SYSTEM];
159 busy_time += kcpustat_cpu(cpu).cpustat[CPUTIME_IRQ];
160 busy_time += kcpustat_cpu(cpu).cpustat[CPUTIME_SOFTIRQ];
161 busy_time += kcpustat_cpu(cpu).cpustat[CPUTIME_STEAL];
162 busy_time += kcpustat_cpu(cpu).cpustat[CPUTIME_NICE];
163
164 idle_time = cur_wall_time - busy_time;
165 if (wall)
166 *wall = cputime_to_usecs(cur_wall_time);
167
168 return cputime_to_usecs(idle_time);
169}
170
171u64 get_cpu_idle_time(unsigned int cpu, u64 *wall, int io_busy)
172{
173 u64 idle_time = get_cpu_idle_time_us(cpu, io_busy ? wall : NULL);
174
175 if (idle_time == -1ULL)
176 return get_cpu_idle_time_jiffy(cpu, wall);
177 else if (!io_busy)
178 idle_time += get_cpu_iowait_time_us(cpu, wall);
179
180 return idle_time;
181}
182EXPORT_SYMBOL_GPL(get_cpu_idle_time);
183
146static struct cpufreq_policy *__cpufreq_cpu_get(unsigned int cpu, bool sysfs)
147{
148 struct cpufreq_policy *data;
149 unsigned long flags;
150
151 if (cpu >= nr_cpu_ids)
152 goto err_out;
153

--- 1838 unchanged lines hidden --- 		184static struct cpufreq_policy *__cpufreq_cpu_get(unsigned int cpu, bool sysfs)
185{
186 struct cpufreq_policy *data;
187 unsigned long flags;
188
189 if (cpu >= nr_cpu_ids)
190 goto err_out;
191

--- 1838 unchanged lines hidden ---