Release 4.11 tools/power/cpupower/utils/idle_monitor/cpupower-monitor.h

/*
 *  (C) 2010,2011       Thomas Renninger <trenn@suse.de>, Novell Inc.
 *
 *  Licensed under the terms of the GNU GPL License version 2.
 *
 */

#ifndef __CPUIDLE_INFO_HW__

#define __CPUIDLE_INFO_HW__

#include <stdarg.h>
#include <time.h>

#include "idle_monitor/idle_monitors.h"


#define MONITORS_MAX 20

#define MONITOR_NAME_LEN 20

#define CSTATE_NAME_LEN 5

#define CSTATE_DESC_LEN 60


int cpu_count;

/* Hard to define the right names ...: */

enum power_range_e {
	
RANGE_THREAD,	/* Lowest in topology hierarcy, AMD: core, Intel: thread
                           kernel sysfs: cpu */
	
RANGE_CORE,	/* AMD: unit, Intel: core, kernel_sysfs: core_id */
	
RANGE_PACKAGE,	/* Package, processor socket */
	
RANGE_MACHINE,	/* Machine, platform wide */
	
RANGE_MAX };


typedef struct cstate {
	
int  id;
	
enum power_range_e range;
	
char name[CSTATE_NAME_LEN];
	
char desc[CSTATE_DESC_LEN];

	/* either provide a percentage or a general count */
	
int (*get_count_percent)(unsigned int self_id, double *percent,
				 unsigned int cpu);
	
int (*get_count)(unsigned int self_id, unsigned long long *count,
			 unsigned int cpu);
} 
cstate_t;


struct cpuidle_monitor {
	/* Name must not contain whitespaces */
	
char name[MONITOR_NAME_LEN];
	
int name_len;
	
int hw_states_num;
	
cstate_t *hw_states;
	
int (*start) (void);
	
int (*stop) (void);
	
struct cpuidle_monitor* (*do_register) (void);
	
void (*unregister)(void);
	
unsigned int overflow_s;
	
int needs_root;
};

extern long long timespec_diff_us(struct timespec start, struct timespec end);


#define print_overflow_err(mes, ov)						\
{                                                                               \
        fprintf(stderr, gettext("Measure took %u seconds, but registers could " \
                                "overflow at %u seconds, results "              \
                                "could be inaccurate\n"), mes, ov);             \
}


/* Taken over from x86info project sources  -> return 0 on success */
#include <sched.h>
#include <sys/types.h>
#include <unistd.h>


static inline int bind_cpu(int cpu)
{
	cpu_set_t set;

	if (sched_getaffinity(getpid(), sizeof(set), &set) == 0) {
		CPU_ZERO(&set);
		CPU_SET(cpu, &set);
		return sched_setaffinity(getpid(), sizeof(set), &set);
	}
	return 1;
}

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#endif /* __CPUIDLE_INFO_HW__ */
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Dominik Brodowski
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Directory: tools/power/cpupower/utils/idle_monitor

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