linux/drivers/cpufreq/cpufreq_stats.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 *  drivers/cpufreq/cpufreq_stats.c
 *
 *  Copyright (C) 2003-2004 Venkatesh Pallipadi <[email protected]>.
 *  (C) 2004 Zou Nan hai <[email protected]>.
 */

#include <linux/cpu.h>
#include <linux/cpufreq.h>
#include <linux/module.h>
#include <linux/sched/clock.h>
#include <linux/slab.h>

struct cpufreq_stats { … };

static void cpufreq_stats_update(struct cpufreq_stats *stats,
				 unsigned long long time)
{ … }

static void cpufreq_stats_reset_table(struct cpufreq_stats *stats)
{ … }

static ssize_t show_total_trans(struct cpufreq_policy *policy, char *buf)
{ … }
cpufreq_freq_attr_ro(…);

static ssize_t show_time_in_state(struct cpufreq_policy *policy, char *buf)
{ … }
cpufreq_freq_attr_ro(…);

/* We don't care what is written to the attribute */
static ssize_t store_reset(struct cpufreq_policy *policy, const char *buf,
			   size_t count)
{ … }
cpufreq_freq_attr_wo(…);

static ssize_t show_trans_table(struct cpufreq_policy *policy, char *buf)
{ … }
cpufreq_freq_attr_ro(…);

static struct attribute *default_attrs[] = …;
static const struct attribute_group stats_attr_group = …;

static int freq_table_get_index(struct cpufreq_stats *stats, unsigned int freq)
{ … }

void cpufreq_stats_free_table(struct cpufreq_policy *policy)
{ … }

void cpufreq_stats_create_table(struct cpufreq_policy *policy)
{ … }

void cpufreq_stats_record_transition(struct cpufreq_policy *policy,
				     unsigned int new_freq)
{ … }