1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /* cpufreq-bench CPUFreq microbenchmark
3 *
4 * Copyright (C) 2008 Christian Kornacker <ckornacker@suse.de>
5 */
6
7 /* struct that holds the required config parameters */
8 struct config
9 {
10 long sleep; /* sleep time in µs */
11 long load; /* load time in µs */
12 long sleep_step; /* time value which changes the
13 * sleep time after every round in µs */
14 long load_step; /* time value which changes the
15 * load time after every round in µs */
16 unsigned int cycles; /* calculation cycles with the same sleep/load time */
17 unsigned int rounds; /* calculation rounds with iterated sleep/load time */
18 unsigned int cpu; /* cpu for which the affinity is set */
19 char governor[15]; /* cpufreq governor */
20 enum sched_prio /* possible scheduler priorities */
21 {
22 SCHED_ERR = -1,
23 SCHED_HIGH,
24 SCHED_DEFAULT,
25 SCHED_LOW
26 } prio;
27
28 unsigned int verbose; /* verbose output */
29 FILE *output; /* logfile */
30 char *output_filename; /* logfile name, must be freed at the end
31 if output != NULL and output != stdout*/
32 };
33
34 enum sched_prio string_to_prio(const char *str);
35
36 FILE *prepare_output(const char *dir);
37
38 int prepare_config(const char *path, struct config *config);
39 struct config *prepare_default_config();
40