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1/* SPDX-License-Identifier: GPL-2.0-only */2/*3 * (C) 2010,2011 Thomas Renninger <trenn@suse.de>, Novell Inc.4 */5 6#ifndef __CPUIDLE_INFO_HW__7#define __CPUIDLE_INFO_HW__8 9#include <stdarg.h>10#include <time.h>11 12#include "idle_monitor/idle_monitors.h"13 14#define MONITORS_MAX 2015#define MONITOR_NAME_LEN 2016 17/* CSTATE_NAME_LEN is limited by header field width defined18 * in cpupower-monitor.c. Header field width is defined to be19 * sum of percent width and two spaces for padding.20 */21#ifdef __powerpc__22#define CSTATE_NAME_LEN 723#else24#define CSTATE_NAME_LEN 525#endif26#define CSTATE_DESC_LEN 6027 28extern int cpu_count;29 30/* Hard to define the right names ...: */31enum power_range_e {32 RANGE_THREAD, /* Lowest in topology hierarcy, AMD: core, Intel: thread33 kernel sysfs: cpu */34 RANGE_CORE, /* AMD: unit, Intel: core, kernel_sysfs: core_id */35 RANGE_PACKAGE, /* Package, processor socket */36 RANGE_MACHINE, /* Machine, platform wide */37 RANGE_MAX };38 39typedef struct cstate {40 int id;41 enum power_range_e range;42 char name[CSTATE_NAME_LEN];43 char desc[CSTATE_DESC_LEN];44 45 /* either provide a percentage or a general count */46 int (*get_count_percent)(unsigned int self_id, double *percent,47 unsigned int cpu);48 int (*get_count)(unsigned int self_id, unsigned long long *count,49 unsigned int cpu);50} cstate_t;51 52struct cpuidle_monitor {53 /* Name must not contain whitespaces */54 char name[MONITOR_NAME_LEN];55 int name_len;56 int hw_states_num;57 cstate_t *hw_states;58 int (*start) (void);59 int (*stop) (void);60 struct cpuidle_monitor* (*do_register) (void);61 void (*unregister)(void);62 unsigned int overflow_s;63 struct {64 unsigned int needs_root:1;65 unsigned int per_cpu_schedule:1;66 } flags;67};68 69extern long long timespec_diff_us(struct timespec start, struct timespec end);70 71#define print_overflow_err(mes, ov) \72{ \73 fprintf(stderr, gettext("Measure took %u seconds, but registers could " \74 "overflow at %u seconds, results " \75 "could be inaccurate\n"), mes, ov); \76}77 78 79/* Taken over from x86info project sources -> return 0 on success */80#include <sched.h>81#include <sys/types.h>82#include <unistd.h>83static inline int bind_cpu(int cpu)84{85 cpu_set_t set;86 87 if (sched_getaffinity(getpid(), sizeof(set), &set) == 0) {88 CPU_ZERO(&set);89 CPU_SET(cpu, &set);90 return sched_setaffinity(getpid(), sizeof(set), &set);91 }92 return 1;93}94 95#endif /* __CPUIDLE_INFO_HW__ */96