^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* Leap second stress test
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * by: John Stultz (john.stultz@linaro.org)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * (C) Copyright IBM 2012
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * (C) Copyright 2013, 2015 Linaro Limited
^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) * This test signals the kernel to insert a leap second
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * every day at midnight GMT. This allows for stessing the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * kernel's leap-second behavior, as well as how well applications
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * handle the leap-second discontinuity.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * Usage: leap-a-day [-s] [-i <num>]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * Options:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * -s: Each iteration, set the date to 10 seconds before midnight GMT.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * This speeds up the number of leapsecond transitions tested,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * but because it calls settimeofday frequently, advancing the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * time by 24 hours every ~16 seconds, it may cause application
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * disruption.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * -i: Number of iterations to run (default: infinite)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * Other notes: Disabling NTP prior to running this is advised, as the two
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) * may conflict in their commands to the kernel.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) * To build:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * $ gcc leap-a-day.c -o leap-a-day -lrt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * This program is free software: you can redistribute it and/or modify
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * it under the terms of the GNU General Public License as published by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * the Free Software Foundation, either version 2 of the License, or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * (at your option) any later version.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) * This program is distributed in the hope that it will be useful,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) * but WITHOUT ANY WARRANTY; without even the implied warranty of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) * GNU General Public License for more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #include <stdio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #include <stdlib.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #include <time.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #include <sys/time.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #include <sys/timex.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #include <sys/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) #include <string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #include <signal.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #include <unistd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #include "../kselftest.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #define NSEC_PER_SEC 1000000000ULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #define CLOCK_TAI 11
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) time_t next_leap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) int error_found;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) /* returns 1 if a <= b, 0 otherwise */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) static inline int in_order(struct timespec a, struct timespec b)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) if (a.tv_sec < b.tv_sec)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) if (a.tv_sec > b.tv_sec)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) if (a.tv_nsec > b.tv_nsec)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) struct timespec timespec_add(struct timespec ts, unsigned long long ns)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) ts.tv_nsec += ns;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) while (ts.tv_nsec >= NSEC_PER_SEC) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) ts.tv_nsec -= NSEC_PER_SEC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) ts.tv_sec++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) return ts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) char *time_state_str(int state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) switch (state) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) case TIME_OK: return "TIME_OK";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) case TIME_INS: return "TIME_INS";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) case TIME_DEL: return "TIME_DEL";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) case TIME_OOP: return "TIME_OOP";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) case TIME_WAIT: return "TIME_WAIT";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) case TIME_BAD: return "TIME_BAD";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) return "ERROR";
^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) /* clear NTP time_status & time_state */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) int clear_time_state(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) struct timex tx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) * We have to call adjtime twice here, as kernels
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) * prior to 6b1859dba01c7 (included in 3.5 and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) * -stable), had an issue with the state machine
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) * and wouldn't clear the STA_INS/DEL flag directly.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) tx.modes = ADJ_STATUS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) tx.status = STA_PLL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) ret = adjtimex(&tx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) /* Clear maxerror, as it can cause UNSYNC to be set */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) tx.modes = ADJ_MAXERROR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) tx.maxerror = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) ret = adjtimex(&tx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) /* Clear the status */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) tx.modes = ADJ_STATUS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) tx.status = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) ret = adjtimex(&tx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) /* Make sure we cleanup on ctrl-c */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) void handler(int unused)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) clear_time_state();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) exit(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) void sigalarm(int signo)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) struct timex tx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) tx.modes = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) ret = adjtimex(&tx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) if (tx.time.tv_sec < next_leap) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) printf("Error: Early timer expiration! (Should be %ld)\n", next_leap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) error_found = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) printf("adjtimex: %10ld sec + %6ld us (%i)\t%s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) tx.time.tv_sec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) tx.time.tv_usec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) tx.tai,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) time_state_str(ret));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) if (ret != TIME_WAIT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) printf("Error: Timer seeing incorrect NTP state? (Should be TIME_WAIT)\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) error_found = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) printf("adjtimex: %10ld sec + %6ld us (%i)\t%s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) tx.time.tv_sec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) tx.time.tv_usec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) tx.tai,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) time_state_str(ret));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) /* Test for known hrtimer failure */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) void test_hrtimer_failure(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) struct timespec now, target;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) clock_gettime(CLOCK_REALTIME, &now);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) target = timespec_add(now, NSEC_PER_SEC/2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) clock_nanosleep(CLOCK_REALTIME, TIMER_ABSTIME, &target, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) clock_gettime(CLOCK_REALTIME, &now);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) if (!in_order(target, now)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) printf("ERROR: hrtimer early expiration failure observed.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) error_found = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) int main(int argc, char **argv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) timer_t tm1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) struct itimerspec its1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) struct sigevent se;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) struct sigaction act;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) int signum = SIGRTMAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) int settime = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) int tai_time = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) int insert = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) int iterations = 10;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) int opt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) /* Process arguments */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) while ((opt = getopt(argc, argv, "sti:")) != -1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) switch (opt) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) case 'w':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) printf("Only setting leap-flag, not changing time. It could take up to a day for leap to trigger.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) settime = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) case 'i':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) iterations = atoi(optarg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) case 't':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) tai_time = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) printf("Usage: %s [-w] [-i <iterations>]\n", argv[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) printf(" -w: Set flag and wait for leap second each iteration");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) printf(" (default sets time to right before leapsecond)\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) printf(" -i: Number of iterations (-1 = infinite, default is 10)\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) printf(" -t: Print TAI time\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) exit(-1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) /* Make sure TAI support is present if -t was used */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) if (tai_time) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) struct timespec ts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) if (clock_gettime(CLOCK_TAI, &ts)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) printf("System doesn't support CLOCK_TAI\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) ksft_exit_fail();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) signal(SIGINT, handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) signal(SIGKILL, handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) /* Set up timer signal handler: */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) sigfillset(&act.sa_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) act.sa_flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) act.sa_handler = sigalarm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) sigaction(signum, &act, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) if (iterations < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) printf("This runs continuously. Press ctrl-c to stop\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) printf("Running for %i iterations. Press ctrl-c to stop\n", iterations);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) printf("\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) while (1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) struct timespec ts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) struct timex tx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) time_t now;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) /* Get the current time */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) clock_gettime(CLOCK_REALTIME, &ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) /* Calculate the next possible leap second 23:59:60 GMT */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) next_leap = ts.tv_sec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) next_leap += 86400 - (next_leap % 86400);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) if (settime) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) struct timeval tv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) tv.tv_sec = next_leap - 10;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) tv.tv_usec = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) settimeofday(&tv, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) printf("Setting time to %s", ctime(&tv.tv_sec));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) /* Reset NTP time state */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) clear_time_state();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) /* Set the leap second insert flag */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) tx.modes = ADJ_STATUS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) if (insert)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) tx.status = STA_INS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) tx.status = STA_DEL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) ret = adjtimex(&tx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) printf("Error: Problem setting STA_INS/STA_DEL!: %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) time_state_str(ret));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) return ksft_exit_fail();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) /* Validate STA_INS was set */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) tx.modes = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) ret = adjtimex(&tx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) if (tx.status != STA_INS && tx.status != STA_DEL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) printf("Error: STA_INS/STA_DEL not set!: %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) time_state_str(ret));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) return ksft_exit_fail();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) if (tai_time) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) printf("Using TAI time,"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) " no inconsistencies should be seen!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) printf("Scheduling leap second for %s", ctime(&next_leap));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) /* Set up timer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) printf("Setting timer for %ld - %s", next_leap, ctime(&next_leap));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) memset(&se, 0, sizeof(se));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) se.sigev_notify = SIGEV_SIGNAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) se.sigev_signo = signum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) se.sigev_value.sival_int = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) if (timer_create(CLOCK_REALTIME, &se, &tm1) == -1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) printf("Error: timer_create failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) return ksft_exit_fail();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) its1.it_value.tv_sec = next_leap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) its1.it_value.tv_nsec = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) its1.it_interval.tv_sec = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) its1.it_interval.tv_nsec = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) timer_settime(tm1, TIMER_ABSTIME, &its1, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) /* Wake up 3 seconds before leap */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) ts.tv_sec = next_leap - 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) ts.tv_nsec = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) while (clock_nanosleep(CLOCK_REALTIME, TIMER_ABSTIME, &ts, NULL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) printf("Something woke us up, returning to sleep\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) /* Validate STA_INS is still set */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) tx.modes = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) ret = adjtimex(&tx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) if (tx.status != STA_INS && tx.status != STA_DEL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) printf("Something cleared STA_INS/STA_DEL, setting it again.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) tx.modes = ADJ_STATUS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) if (insert)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) tx.status = STA_INS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) tx.status = STA_DEL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) ret = adjtimex(&tx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) /* Check adjtimex output every half second */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) now = tx.time.tv_sec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) while (now < next_leap + 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) char buf[26];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) struct timespec tai;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) tx.modes = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) ret = adjtimex(&tx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) if (tai_time) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) clock_gettime(CLOCK_TAI, &tai);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) printf("%ld sec, %9ld ns\t%s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) tai.tv_sec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) tai.tv_nsec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) time_state_str(ret));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) ctime_r(&tx.time.tv_sec, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) buf[strlen(buf)-1] = 0; /*remove trailing\n */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) printf("%s + %6ld us (%i)\t%s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) tx.time.tv_usec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) tx.tai,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) time_state_str(ret));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) now = tx.time.tv_sec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) /* Sleep for another half second */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) ts.tv_sec = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) ts.tv_nsec = NSEC_PER_SEC / 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) clock_nanosleep(CLOCK_MONOTONIC, 0, &ts, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) /* Switch to using other mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) insert = !insert;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) /* Note if kernel has known hrtimer failure */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) test_hrtimer_failure();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) printf("Leap complete\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) if (error_found) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) printf("Errors observed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) clear_time_state();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) return ksft_exit_fail();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) printf("\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) if ((iterations != -1) && !(--iterations))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) clear_time_state();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) return ksft_exit_pass();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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