96 lines
2.3 KiB
C
96 lines
2.3 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* (C) 2010,2011 Thomas Renninger <trenn@suse.de>, Novell Inc.
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*/
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#ifndef __CPUIDLE_INFO_HW__
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#define __CPUIDLE_INFO_HW__
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#include <stdarg.h>
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#include <time.h>
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#include "idle_monitor/idle_monitors.h"
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#define MONITORS_MAX 20
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#define MONITOR_NAME_LEN 20
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/* CSTATE_NAME_LEN is limited by header field width defined
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* in cpupower-monitor.c. Header field width is defined to be
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* sum of percent width and two spaces for padding.
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*/
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#ifdef __powerpc__
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#define CSTATE_NAME_LEN 7
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#else
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#define CSTATE_NAME_LEN 5
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#endif
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#define CSTATE_DESC_LEN 60
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extern int cpu_count;
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/* Hard to define the right names ...: */
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enum power_range_e {
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RANGE_THREAD, /* Lowest in topology hierarcy, AMD: core, Intel: thread
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kernel sysfs: cpu */
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RANGE_CORE, /* AMD: unit, Intel: core, kernel_sysfs: core_id */
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RANGE_PACKAGE, /* Package, processor socket */
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RANGE_MACHINE, /* Machine, platform wide */
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RANGE_MAX };
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typedef struct cstate {
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int id;
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enum power_range_e range;
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char name[CSTATE_NAME_LEN];
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char desc[CSTATE_DESC_LEN];
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/* either provide a percentage or a general count */
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int (*get_count_percent)(unsigned int self_id, double *percent,
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unsigned int cpu);
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int (*get_count)(unsigned int self_id, unsigned long long *count,
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unsigned int cpu);
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} cstate_t;
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struct cpuidle_monitor {
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/* Name must not contain whitespaces */
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char name[MONITOR_NAME_LEN];
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int name_len;
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int hw_states_num;
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cstate_t *hw_states;
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int (*start) (void);
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int (*stop) (void);
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struct cpuidle_monitor* (*do_register) (void);
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void (*unregister)(void);
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unsigned int overflow_s;
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struct {
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unsigned int needs_root:1;
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unsigned int per_cpu_schedule:1;
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} flags;
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};
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extern long long timespec_diff_us(struct timespec start, struct timespec end);
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#define print_overflow_err(mes, ov) \
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{ \
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fprintf(stderr, gettext("Measure took %u seconds, but registers could " \
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"overflow at %u seconds, results " \
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"could be inaccurate\n"), mes, ov); \
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}
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/* Taken over from x86info project sources -> return 0 on success */
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#include <sched.h>
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#include <sys/types.h>
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#include <unistd.h>
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static inline int bind_cpu(int cpu)
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{
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cpu_set_t set;
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if (sched_getaffinity(getpid(), sizeof(set), &set) == 0) {
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CPU_ZERO(&set);
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CPU_SET(cpu, &set);
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return sched_setaffinity(getpid(), sizeof(set), &set);
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}
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return 1;
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}
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#endif /* __CPUIDLE_INFO_HW__ */
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