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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* (C) 2010,2011 Thomas Renninger <trenn@suse.de>, Novell Inc.
*/
#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
/* CSTATE_NAME_LEN is limited by header field width defined
* in cpupower-monitor.c. Header field width is defined to be
* sum of percent width and two spaces for padding.
*/
#ifdef __powerpc__
#define CSTATE_NAME_LEN 7
#else
#define CSTATE_NAME_LEN 5
#endif
#define CSTATE_DESC_LEN 60
extern 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;
struct {
unsigned int needs_root:1;
unsigned int per_cpu_schedule:1;
} flags;
};
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;
}
#endif /* __CPUIDLE_INFO_HW__ */
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