^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* Time inconsistency check test
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * by: john stultz (johnstul@us.ibm.com)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * (C) Copyright IBM 2003, 2004, 2005, 2012
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * (C) Copyright Linaro Limited 2015
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Licensed under the GPLv2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * To build:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * $ gcc inconsistency-check.c -o inconsistency-check -lrt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * This program is free software: you can redistribute it and/or modify
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * it under the terms of the GNU General Public License as published by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * the Free Software Foundation, either version 2 of the License, or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * (at your option) any later version.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * This program is distributed in the hope that it will be useful,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * but WITHOUT ANY WARRANTY; without even the implied warranty of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * GNU General Public License for more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) */
^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)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <stdio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <unistd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <stdlib.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <time.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <sys/time.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <sys/timex.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <signal.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include "../kselftest.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define CALLS_PER_LOOP 64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define NSEC_PER_SEC 1000000000ULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define CLOCK_REALTIME 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #define CLOCK_MONOTONIC 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define CLOCK_PROCESS_CPUTIME_ID 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define CLOCK_THREAD_CPUTIME_ID 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #define CLOCK_MONOTONIC_RAW 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #define CLOCK_REALTIME_COARSE 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #define CLOCK_MONOTONIC_COARSE 6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #define CLOCK_BOOTTIME 7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #define CLOCK_REALTIME_ALARM 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #define CLOCK_BOOTTIME_ALARM 9
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #define CLOCK_HWSPECIFIC 10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #define CLOCK_TAI 11
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) #define NR_CLOCKIDS 12
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) char *clockstring(int clockid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) switch (clockid) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) case CLOCK_REALTIME:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) return "CLOCK_REALTIME";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) case CLOCK_MONOTONIC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) return "CLOCK_MONOTONIC";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) case CLOCK_PROCESS_CPUTIME_ID:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) return "CLOCK_PROCESS_CPUTIME_ID";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) case CLOCK_THREAD_CPUTIME_ID:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) return "CLOCK_THREAD_CPUTIME_ID";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) case CLOCK_MONOTONIC_RAW:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) return "CLOCK_MONOTONIC_RAW";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) case CLOCK_REALTIME_COARSE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) return "CLOCK_REALTIME_COARSE";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) case CLOCK_MONOTONIC_COARSE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) return "CLOCK_MONOTONIC_COARSE";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) case CLOCK_BOOTTIME:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) return "CLOCK_BOOTTIME";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) case CLOCK_REALTIME_ALARM:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) return "CLOCK_REALTIME_ALARM";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) case CLOCK_BOOTTIME_ALARM:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) return "CLOCK_BOOTTIME_ALARM";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) case CLOCK_TAI:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) return "CLOCK_TAI";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) return "UNKNOWN_CLOCKID";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) /* returns 1 if a <= b, 0 otherwise */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) static inline int in_order(struct timespec a, struct timespec b)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) /* use unsigned to avoid false positives on 2038 rollover */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) if ((unsigned long)a.tv_sec < (unsigned long)b.tv_sec)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) if ((unsigned long)a.tv_sec > (unsigned long)b.tv_sec)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) if (a.tv_nsec > b.tv_nsec)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) }
^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) int consistency_test(int clock_type, unsigned long seconds)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) struct timespec list[CALLS_PER_LOOP];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) int i, inconsistent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) long now, then;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) time_t t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) char *start_str;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) clock_gettime(clock_type, &list[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) now = then = list[0].tv_sec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) /* timestamp start of test */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) t = time(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) start_str = ctime(&t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) while (seconds == -1 || now - then < seconds) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) inconsistent = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) /* Fill list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) for (i = 0; i < CALLS_PER_LOOP; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) clock_gettime(clock_type, &list[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) /* Check for inconsistencies */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) for (i = 0; i < CALLS_PER_LOOP - 1; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) if (!in_order(list[i], list[i+1]))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) inconsistent = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) /* display inconsistency */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) if (inconsistent >= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) unsigned long long delta;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) printf("\%s\n", start_str);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) for (i = 0; i < CALLS_PER_LOOP; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) if (i == inconsistent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) printf("--------------------\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) printf("%lu:%lu\n", list[i].tv_sec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) list[i].tv_nsec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) if (i == inconsistent + 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) printf("--------------------\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) delta = list[inconsistent].tv_sec * NSEC_PER_SEC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) delta += list[inconsistent].tv_nsec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) delta -= list[inconsistent+1].tv_sec * NSEC_PER_SEC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) delta -= list[inconsistent+1].tv_nsec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) printf("Delta: %llu ns\n", delta);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) fflush(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) /* timestamp inconsistency*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) t = time(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) printf("%s\n", ctime(&t));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) printf("[FAILED]\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) now = list[0].tv_sec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) printf("[OK]\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) return 0;
^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)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) int main(int argc, char *argv[])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) int clockid, opt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) int userclock = CLOCK_REALTIME;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) int maxclocks = NR_CLOCKIDS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) int runtime = 10;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) struct timespec ts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) /* Process arguments */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) while ((opt = getopt(argc, argv, "t:c:")) != -1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) switch (opt) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) case 't':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) runtime = atoi(optarg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) case 'c':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) userclock = atoi(optarg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) maxclocks = userclock + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) printf("Usage: %s [-t <secs>] [-c <clockid>]\n", argv[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) printf(" -t: Number of seconds to run\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) printf(" -c: clockid to use (default, all clockids)\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) exit(-1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) }
^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) setbuf(stdout, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) for (clockid = userclock; clockid < maxclocks; clockid++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) if (clockid == CLOCK_HWSPECIFIC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) if (!clock_gettime(clockid, &ts)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) printf("Consistent %-30s ", clockstring(clockid));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) if (consistency_test(clockid, runtime))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) return ksft_exit_fail();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) return ksft_exit_pass();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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