^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /* cpufreq-bench CPUFreq microbenchmark
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright (C) 2008 Christian Kornacker <ckornacker@suse.de>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <stdio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <time.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <sys/time.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <sys/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <unistd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <cpufreq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <cpupower.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include "config.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include "system.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) * returns time since epoch in µs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) * @retval time
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) **/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) long long int get_time()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) struct timeval now;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) gettimeofday(&now, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) return (long long int)(now.tv_sec * 1000000LL + now.tv_usec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) * sets the cpufreq governor
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) * @param governor cpufreq governor name
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) * @param cpu cpu for which the governor should be set
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) * @retval 0 on success
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) * @retval -1 when failed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) **/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) int set_cpufreq_governor(char *governor, unsigned int cpu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) dprintf("set %s as cpufreq governor\n", governor);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) if (cpupower_is_cpu_online(cpu) != 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) perror("cpufreq_cpu_exists");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) fprintf(stderr, "error: cpu %u does not exist\n", cpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) if (cpufreq_modify_policy_governor(cpu, governor) != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) perror("cpufreq_modify_policy_governor");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) fprintf(stderr, "error: unable to set %s governor\n", governor);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) * sets cpu affinity for the process
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) * @param cpu cpu# to which the affinity should be set
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) * @retval 0 on success
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) * @retval -1 when setting the affinity failed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) **/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) int set_cpu_affinity(unsigned int cpu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) cpu_set_t cpuset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) CPU_ZERO(&cpuset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) CPU_SET(cpu, &cpuset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) dprintf("set affinity to cpu #%u\n", cpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) if (sched_setaffinity(getpid(), sizeof(cpu_set_t), &cpuset) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) perror("sched_setaffinity");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) fprintf(stderr, "warning: unable to set cpu affinity\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) * sets the process priority parameter
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) * @param priority priority value
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) * @retval 0 on success
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) * @retval -1 when setting the priority failed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) **/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) int set_process_priority(int priority)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) struct sched_param param;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) dprintf("set scheduler priority to %i\n", priority);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) param.sched_priority = priority;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) if (sched_setscheduler(0, SCHEDULER, ¶m) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) perror("sched_setscheduler");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) fprintf(stderr, "warning: unable to set scheduler priority\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) * notifies the user that the benchmark may run some time
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) * @param config benchmark config values
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) **/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) void prepare_user(const struct config *config)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) unsigned long sleep_time = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) unsigned long load_time = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) unsigned int round;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) for (round = 0; round < config->rounds; round++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) sleep_time += 2 * config->cycles *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) (config->sleep + config->sleep_step * round);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) load_time += 2 * config->cycles *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) (config->load + config->load_step * round) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) (config->load + config->load_step * round * 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) if (config->verbose || config->output != stdout)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) printf("approx. test duration: %im\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) (int)((sleep_time + load_time) / 60000000));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) * sets up the cpu affinity and scheduler priority
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) * @param config benchmark config values
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) **/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) void prepare_system(const struct config *config)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) if (config->verbose)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) printf("set cpu affinity to cpu #%u\n", config->cpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) set_cpu_affinity(config->cpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) switch (config->prio) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) case SCHED_HIGH:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) if (config->verbose)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) printf("high priority condition requested\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) set_process_priority(PRIORITY_HIGH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) case SCHED_LOW:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) if (config->verbose)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) printf("low priority condition requested\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) set_process_priority(PRIORITY_LOW);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) if (config->verbose)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) printf("default priority condition requested\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) set_process_priority(PRIORITY_DEFAULT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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