mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-05 10:04:12 +08:00
1a59d1b8e0
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 59 temple place suite 330 boston ma 02111 1307 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1334 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
226 lines
4.8 KiB
C
226 lines
4.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/* cpufreq-bench CPUFreq microbenchmark
|
|
*
|
|
* Copyright (C) 2008 Christian Kornacker <ckornacker@suse.de>
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <stdarg.h>
|
|
#include <string.h>
|
|
#include <time.h>
|
|
#include <dirent.h>
|
|
|
|
#include <sys/utsname.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
|
|
#include "parse.h"
|
|
#include "config.h"
|
|
|
|
/**
|
|
* converts priority string to priority
|
|
*
|
|
* @param str string that represents a scheduler priority
|
|
*
|
|
* @retval priority
|
|
* @retval SCHED_ERR when the priority doesn't exit
|
|
**/
|
|
|
|
enum sched_prio string_to_prio(const char *str)
|
|
{
|
|
if (strncasecmp("high", str, strlen(str)) == 0)
|
|
return SCHED_HIGH;
|
|
else if (strncasecmp("default", str, strlen(str)) == 0)
|
|
return SCHED_DEFAULT;
|
|
else if (strncasecmp("low", str, strlen(str)) == 0)
|
|
return SCHED_LOW;
|
|
else
|
|
return SCHED_ERR;
|
|
}
|
|
|
|
/**
|
|
* create and open logfile
|
|
*
|
|
* @param dir directory in which the logfile should be created
|
|
*
|
|
* @retval logfile on success
|
|
* @retval NULL when the file can't be created
|
|
**/
|
|
|
|
FILE *prepare_output(const char *dirname)
|
|
{
|
|
FILE *output = NULL;
|
|
int len;
|
|
char *filename, *filename_tmp;
|
|
struct utsname sysdata;
|
|
DIR *dir;
|
|
|
|
dir = opendir(dirname);
|
|
if (dir == NULL) {
|
|
if (mkdir(dirname, 0755)) {
|
|
perror("mkdir");
|
|
fprintf(stderr, "error: Cannot create dir %s\n",
|
|
dirname);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
len = strlen(dirname) + 30;
|
|
filename = malloc(sizeof(char) * len);
|
|
if (!filename) {
|
|
perror("malloc");
|
|
goto out_dir;
|
|
}
|
|
|
|
if (uname(&sysdata) == 0) {
|
|
len += strlen(sysdata.nodename) + strlen(sysdata.release);
|
|
filename_tmp = realloc(filename, sizeof(*filename) * len);
|
|
|
|
if (filename_tmp == NULL) {
|
|
free(filename);
|
|
perror("realloc");
|
|
goto out_dir;
|
|
}
|
|
|
|
filename = filename_tmp;
|
|
snprintf(filename, len - 1, "%s/benchmark_%s_%s_%li.log",
|
|
dirname, sysdata.nodename, sysdata.release, time(NULL));
|
|
} else {
|
|
snprintf(filename, len - 1, "%s/benchmark_%li.log",
|
|
dirname, time(NULL));
|
|
}
|
|
|
|
dprintf("logfilename: %s\n", filename);
|
|
|
|
output = fopen(filename, "w+");
|
|
if (output == NULL) {
|
|
perror("fopen");
|
|
fprintf(stderr, "error: unable to open logfile\n");
|
|
goto out;
|
|
}
|
|
|
|
fprintf(stdout, "Logfile: %s\n", filename);
|
|
|
|
fprintf(output, "#round load sleep performance powersave percentage\n");
|
|
out:
|
|
free(filename);
|
|
out_dir:
|
|
closedir(dir);
|
|
return output;
|
|
}
|
|
|
|
/**
|
|
* returns the default config
|
|
*
|
|
* @retval default config on success
|
|
* @retval NULL when the output file can't be created
|
|
**/
|
|
|
|
struct config *prepare_default_config()
|
|
{
|
|
struct config *config = malloc(sizeof(struct config));
|
|
|
|
dprintf("loading defaults\n");
|
|
|
|
config->sleep = 500000;
|
|
config->load = 500000;
|
|
config->sleep_step = 500000;
|
|
config->load_step = 500000;
|
|
config->cycles = 5;
|
|
config->rounds = 50;
|
|
config->cpu = 0;
|
|
config->prio = SCHED_HIGH;
|
|
config->verbose = 0;
|
|
strncpy(config->governor, "ondemand", sizeof(config->governor));
|
|
|
|
config->output = stdout;
|
|
|
|
#ifdef DEFAULT_CONFIG_FILE
|
|
if (prepare_config(DEFAULT_CONFIG_FILE, config))
|
|
return NULL;
|
|
#endif
|
|
return config;
|
|
}
|
|
|
|
/**
|
|
* parses config file and returns the config to the caller
|
|
*
|
|
* @param path config file name
|
|
*
|
|
* @retval 1 on error
|
|
* @retval 0 on success
|
|
**/
|
|
|
|
int prepare_config(const char *path, struct config *config)
|
|
{
|
|
size_t len = 0;
|
|
char opt[16], val[32], *line = NULL;
|
|
FILE *configfile;
|
|
|
|
if (config == NULL) {
|
|
fprintf(stderr, "error: config is NULL\n");
|
|
return 1;
|
|
}
|
|
|
|
configfile = fopen(path, "r");
|
|
if (configfile == NULL) {
|
|
perror("fopen");
|
|
fprintf(stderr, "error: unable to read configfile\n");
|
|
free(config);
|
|
return 1;
|
|
}
|
|
|
|
while (getline(&line, &len, configfile) != -1) {
|
|
if (line[0] == '#' || line[0] == ' ' || line[0] == '\n')
|
|
continue;
|
|
|
|
if (sscanf(line, "%14s = %30s", opt, val) < 2)
|
|
continue;
|
|
|
|
dprintf("parsing: %s -> %s\n", opt, val);
|
|
|
|
if (strcmp("sleep", opt) == 0)
|
|
sscanf(val, "%li", &config->sleep);
|
|
|
|
else if (strcmp("load", opt) == 0)
|
|
sscanf(val, "%li", &config->load);
|
|
|
|
else if (strcmp("load_step", opt) == 0)
|
|
sscanf(val, "%li", &config->load_step);
|
|
|
|
else if (strcmp("sleep_step", opt) == 0)
|
|
sscanf(val, "%li", &config->sleep_step);
|
|
|
|
else if (strcmp("cycles", opt) == 0)
|
|
sscanf(val, "%u", &config->cycles);
|
|
|
|
else if (strcmp("rounds", opt) == 0)
|
|
sscanf(val, "%u", &config->rounds);
|
|
|
|
else if (strcmp("verbose", opt) == 0)
|
|
sscanf(val, "%u", &config->verbose);
|
|
|
|
else if (strcmp("output", opt) == 0)
|
|
config->output = prepare_output(val);
|
|
|
|
else if (strcmp("cpu", opt) == 0)
|
|
sscanf(val, "%u", &config->cpu);
|
|
|
|
else if (strcmp("governor", opt) == 0) {
|
|
strncpy(config->governor, val,
|
|
sizeof(config->governor));
|
|
config->governor[sizeof(config->governor) - 1] = '\0';
|
|
}
|
|
|
|
else if (strcmp("priority", opt) == 0) {
|
|
if (string_to_prio(val) != SCHED_ERR)
|
|
config->prio = string_to_prio(val);
|
|
}
|
|
}
|
|
|
|
free(line);
|
|
|
|
return 0;
|
|
}
|