v4.19.13 snapshot.
diff --git a/tools/testing/selftests/timers/valid-adjtimex.c b/tools/testing/selftests/timers/valid-adjtimex.c
new file mode 100644
index 0000000..d9d3ab9
--- /dev/null
+++ b/tools/testing/selftests/timers/valid-adjtimex.c
@@ -0,0 +1,328 @@
+/* valid adjtimex test
+ * by: John Stultz <john.stultz@linaro.org>
+ * (C) Copyright Linaro 2015
+ * Licensed under the GPLv2
+ *
+ * This test validates adjtimex interface with valid
+ * and invalid test data.
+ *
+ * Usage: valid-adjtimex
+ *
+ * To build:
+ * $ gcc valid-adjtimex.c -o valid-adjtimex -lrt
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <sys/time.h>
+#include <sys/timex.h>
+#include <string.h>
+#include <signal.h>
+#include <unistd.h>
+#include "../kselftest.h"
+
+#define NSEC_PER_SEC 1000000000LL
+#define USEC_PER_SEC 1000000LL
+
+#define ADJ_SETOFFSET 0x0100
+
+#include <sys/syscall.h>
+static int clock_adjtime(clockid_t id, struct timex *tx)
+{
+ return syscall(__NR_clock_adjtime, id, tx);
+}
+
+
+/* clear NTP time_status & time_state */
+int clear_time_state(void)
+{
+ struct timex tx;
+ int ret;
+
+ tx.modes = ADJ_STATUS;
+ tx.status = 0;
+ ret = adjtimex(&tx);
+ return ret;
+}
+
+#define NUM_FREQ_VALID 32
+#define NUM_FREQ_OUTOFRANGE 4
+#define NUM_FREQ_INVALID 2
+
+long valid_freq[NUM_FREQ_VALID] = {
+ -499<<16,
+ -450<<16,
+ -400<<16,
+ -350<<16,
+ -300<<16,
+ -250<<16,
+ -200<<16,
+ -150<<16,
+ -100<<16,
+ -75<<16,
+ -50<<16,
+ -25<<16,
+ -10<<16,
+ -5<<16,
+ -1<<16,
+ -1000,
+ 1<<16,
+ 5<<16,
+ 10<<16,
+ 25<<16,
+ 50<<16,
+ 75<<16,
+ 100<<16,
+ 150<<16,
+ 200<<16,
+ 250<<16,
+ 300<<16,
+ 350<<16,
+ 400<<16,
+ 450<<16,
+ 499<<16,
+};
+
+long outofrange_freq[NUM_FREQ_OUTOFRANGE] = {
+ -1000<<16,
+ -550<<16,
+ 550<<16,
+ 1000<<16,
+};
+
+#define LONG_MAX (~0UL>>1)
+#define LONG_MIN (-LONG_MAX - 1)
+
+long invalid_freq[NUM_FREQ_INVALID] = {
+ LONG_MAX,
+ LONG_MIN,
+};
+
+int validate_freq(void)
+{
+ struct timex tx;
+ int ret, pass = 0;
+ int i;
+
+ clear_time_state();
+
+ memset(&tx, 0, sizeof(struct timex));
+ /* Set the leap second insert flag */
+
+ printf("Testing ADJ_FREQ... ");
+ for (i = 0; i < NUM_FREQ_VALID; i++) {
+ tx.modes = ADJ_FREQUENCY;
+ tx.freq = valid_freq[i];
+
+ ret = adjtimex(&tx);
+ if (ret < 0) {
+ printf("[FAIL]\n");
+ printf("Error: adjtimex(ADJ_FREQ, %ld - %ld ppm\n",
+ valid_freq[i], valid_freq[i]>>16);
+ pass = -1;
+ goto out;
+ }
+ tx.modes = 0;
+ ret = adjtimex(&tx);
+ if (tx.freq != valid_freq[i]) {
+ printf("Warning: freq value %ld not what we set it (%ld)!\n",
+ tx.freq, valid_freq[i]);
+ }
+ }
+ for (i = 0; i < NUM_FREQ_OUTOFRANGE; i++) {
+ tx.modes = ADJ_FREQUENCY;
+ tx.freq = outofrange_freq[i];
+
+ ret = adjtimex(&tx);
+ if (ret < 0) {
+ printf("[FAIL]\n");
+ printf("Error: adjtimex(ADJ_FREQ, %ld - %ld ppm\n",
+ outofrange_freq[i], outofrange_freq[i]>>16);
+ pass = -1;
+ goto out;
+ }
+ tx.modes = 0;
+ ret = adjtimex(&tx);
+ if (tx.freq == outofrange_freq[i]) {
+ printf("[FAIL]\n");
+ printf("ERROR: out of range value %ld actually set!\n",
+ tx.freq);
+ pass = -1;
+ goto out;
+ }
+ }
+
+
+ if (sizeof(long) == 8) { /* this case only applies to 64bit systems */
+ for (i = 0; i < NUM_FREQ_INVALID; i++) {
+ tx.modes = ADJ_FREQUENCY;
+ tx.freq = invalid_freq[i];
+ ret = adjtimex(&tx);
+ if (ret >= 0) {
+ printf("[FAIL]\n");
+ printf("Error: No failure on invalid ADJ_FREQUENCY %ld\n",
+ invalid_freq[i]);
+ pass = -1;
+ goto out;
+ }
+ }
+ }
+
+ printf("[OK]\n");
+out:
+ /* reset freq to zero */
+ tx.modes = ADJ_FREQUENCY;
+ tx.freq = 0;
+ ret = adjtimex(&tx);
+
+ return pass;
+}
+
+
+int set_offset(long long offset, int use_nano)
+{
+ struct timex tmx = {};
+ int ret;
+
+ tmx.modes = ADJ_SETOFFSET;
+ if (use_nano) {
+ tmx.modes |= ADJ_NANO;
+
+ tmx.time.tv_sec = offset / NSEC_PER_SEC;
+ tmx.time.tv_usec = offset % NSEC_PER_SEC;
+
+ if (offset < 0 && tmx.time.tv_usec) {
+ tmx.time.tv_sec -= 1;
+ tmx.time.tv_usec += NSEC_PER_SEC;
+ }
+ } else {
+ tmx.time.tv_sec = offset / USEC_PER_SEC;
+ tmx.time.tv_usec = offset % USEC_PER_SEC;
+
+ if (offset < 0 && tmx.time.tv_usec) {
+ tmx.time.tv_sec -= 1;
+ tmx.time.tv_usec += USEC_PER_SEC;
+ }
+ }
+
+ ret = clock_adjtime(CLOCK_REALTIME, &tmx);
+ if (ret < 0) {
+ printf("(sec: %ld usec: %ld) ", tmx.time.tv_sec, tmx.time.tv_usec);
+ printf("[FAIL]\n");
+ return -1;
+ }
+ return 0;
+}
+
+int set_bad_offset(long sec, long usec, int use_nano)
+{
+ struct timex tmx = {};
+ int ret;
+
+ tmx.modes = ADJ_SETOFFSET;
+ if (use_nano)
+ tmx.modes |= ADJ_NANO;
+
+ tmx.time.tv_sec = sec;
+ tmx.time.tv_usec = usec;
+ ret = clock_adjtime(CLOCK_REALTIME, &tmx);
+ if (ret >= 0) {
+ printf("Invalid (sec: %ld usec: %ld) did not fail! ", tmx.time.tv_sec, tmx.time.tv_usec);
+ printf("[FAIL]\n");
+ return -1;
+ }
+ return 0;
+}
+
+int validate_set_offset(void)
+{
+ printf("Testing ADJ_SETOFFSET... ");
+
+ /* Test valid values */
+ if (set_offset(NSEC_PER_SEC - 1, 1))
+ return -1;
+
+ if (set_offset(-NSEC_PER_SEC + 1, 1))
+ return -1;
+
+ if (set_offset(-NSEC_PER_SEC - 1, 1))
+ return -1;
+
+ if (set_offset(5 * NSEC_PER_SEC, 1))
+ return -1;
+
+ if (set_offset(-5 * NSEC_PER_SEC, 1))
+ return -1;
+
+ if (set_offset(5 * NSEC_PER_SEC + NSEC_PER_SEC / 2, 1))
+ return -1;
+
+ if (set_offset(-5 * NSEC_PER_SEC - NSEC_PER_SEC / 2, 1))
+ return -1;
+
+ if (set_offset(USEC_PER_SEC - 1, 0))
+ return -1;
+
+ if (set_offset(-USEC_PER_SEC + 1, 0))
+ return -1;
+
+ if (set_offset(-USEC_PER_SEC - 1, 0))
+ return -1;
+
+ if (set_offset(5 * USEC_PER_SEC, 0))
+ return -1;
+
+ if (set_offset(-5 * USEC_PER_SEC, 0))
+ return -1;
+
+ if (set_offset(5 * USEC_PER_SEC + USEC_PER_SEC / 2, 0))
+ return -1;
+
+ if (set_offset(-5 * USEC_PER_SEC - USEC_PER_SEC / 2, 0))
+ return -1;
+
+ /* Test invalid values */
+ if (set_bad_offset(0, -1, 1))
+ return -1;
+ if (set_bad_offset(0, -1, 0))
+ return -1;
+ if (set_bad_offset(0, 2 * NSEC_PER_SEC, 1))
+ return -1;
+ if (set_bad_offset(0, 2 * USEC_PER_SEC, 0))
+ return -1;
+ if (set_bad_offset(0, NSEC_PER_SEC, 1))
+ return -1;
+ if (set_bad_offset(0, USEC_PER_SEC, 0))
+ return -1;
+ if (set_bad_offset(0, -NSEC_PER_SEC, 1))
+ return -1;
+ if (set_bad_offset(0, -USEC_PER_SEC, 0))
+ return -1;
+
+ printf("[OK]\n");
+ return 0;
+}
+
+int main(int argc, char **argv)
+{
+ if (validate_freq())
+ return ksft_exit_fail();
+
+ if (validate_set_offset())
+ return ksft_exit_fail();
+
+ return ksft_exit_pass();
+}