1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-or-later */ 2*4882a593Smuzhiyun /* cpufreq-bench CPUFreq microbenchmark 3*4882a593Smuzhiyun * 4*4882a593Smuzhiyun * Copyright (C) 2008 Christian Kornacker <ckornacker@suse.de> 5*4882a593Smuzhiyun */ 6*4882a593Smuzhiyun 7*4882a593Smuzhiyun /* struct that holds the required config parameters */ 8*4882a593Smuzhiyun struct config 9*4882a593Smuzhiyun { 10*4882a593Smuzhiyun long sleep; /* sleep time in µs */ 11*4882a593Smuzhiyun long load; /* load time in µs */ 12*4882a593Smuzhiyun long sleep_step; /* time value which changes the 13*4882a593Smuzhiyun * sleep time after every round in µs */ 14*4882a593Smuzhiyun long load_step; /* time value which changes the 15*4882a593Smuzhiyun * load time after every round in µs */ 16*4882a593Smuzhiyun unsigned int cycles; /* calculation cycles with the same sleep/load time */ 17*4882a593Smuzhiyun unsigned int rounds; /* calculation rounds with iterated sleep/load time */ 18*4882a593Smuzhiyun unsigned int cpu; /* cpu for which the affinity is set */ 19*4882a593Smuzhiyun char governor[15]; /* cpufreq governor */ 20*4882a593Smuzhiyun enum sched_prio /* possible scheduler priorities */ 21*4882a593Smuzhiyun { 22*4882a593Smuzhiyun SCHED_ERR = -1, 23*4882a593Smuzhiyun SCHED_HIGH, 24*4882a593Smuzhiyun SCHED_DEFAULT, 25*4882a593Smuzhiyun SCHED_LOW 26*4882a593Smuzhiyun } prio; 27*4882a593Smuzhiyun 28*4882a593Smuzhiyun unsigned int verbose; /* verbose output */ 29*4882a593Smuzhiyun FILE *output; /* logfile */ 30*4882a593Smuzhiyun char *output_filename; /* logfile name, must be freed at the end 31*4882a593Smuzhiyun if output != NULL and output != stdout*/ 32*4882a593Smuzhiyun }; 33*4882a593Smuzhiyun 34*4882a593Smuzhiyun enum sched_prio string_to_prio(const char *str); 35*4882a593Smuzhiyun 36*4882a593Smuzhiyun FILE *prepare_output(const char *dir); 37*4882a593Smuzhiyun 38*4882a593Smuzhiyun int prepare_config(const char *path, struct config *config); 39*4882a593Smuzhiyun struct config *prepare_default_config(); 40*4882a593Smuzhiyun 41