linux/drivers/cpuidle/governor.c

/*
 * governor.c - governor support
 *
 * (C) 2006-2007 Venkatesh Pallipadi <[email protected]>
 *               Shaohua Li <[email protected]>
 *               Adam Belay <[email protected]>
 *
 * This code is licenced under the GPL.
 */

#include <linux/cpu.h>
#include <linux/cpuidle.h>
#include <linux/mutex.h>
#include <linux/module.h>
#include <linux/pm_qos.h>

#include "cpuidle.h"

char param_governor[CPUIDLE_NAME_LEN];

LIST_HEAD(…);
struct cpuidle_governor *cpuidle_curr_governor;
struct cpuidle_governor *cpuidle_prev_governor;

/**
 * cpuidle_find_governor - finds a governor of the specified name
 * @str: the name
 *
 * Must be called with cpuidle_lock acquired.
 */
struct cpuidle_governor *cpuidle_find_governor(const char *str)
{ … }

/**
 * cpuidle_switch_governor - changes the governor
 * @gov: the new target governor
 * Must be called with cpuidle_lock acquired.
 */
int cpuidle_switch_governor(struct cpuidle_governor *gov)
{ … }

/**
 * cpuidle_register_governor - registers a governor
 * @gov: the governor
 */
int cpuidle_register_governor(struct cpuidle_governor *gov)
{ … }

/**
 * cpuidle_governor_latency_req - Compute a latency constraint for CPU
 * @cpu: Target CPU
 */
s64 cpuidle_governor_latency_req(unsigned int cpu)
{ … }