cpupower-monitor.h

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/*
 *  (C) 2010,2011       Thomas Renninger <[email protected]>, 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);     \
}

#endif /* __CPUIDLE_INFO_HW__ */