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zdtm: thp_disable: Verify prctl(THP_DISABLE) migration

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Signed-off-by: Michał Mirosław <emmir@google.com>
This commit is contained in:
Michał Mirosław 2023-06-02 17:11:16 +02:00 • committed by Andrei Vagin
parent d3a33ca1ef
commit 6006cb6eaf
1 changed files with 23 additions and 0 deletions
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23
test/zdtm/static/thp_disable.c
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@ -17,6 +17,7 @@ int main(int argc, char **argv)
unsigned long orig_flags = 0, new_flags = 0;
unsigned long orig_madv = 0, new_madv = 0;
void *area;
int ret;
test_init(argc, argv);
@ -35,9 +36,31 @@ int main(int argc, char **argv)
return -1;
}
ret = prctl(PR_GET_THP_DISABLE, 0, 0, 0, 0);
if (ret < 0) {
pr_perror("Getting THP-disabled flag failed");
return -1;
}
if (ret != 1) {
errno = 0;
fail("prctl(GET_THP_DISABLE) returned unexpected value: %d != 1\n", ret);
return -1;
}
test_daemon();
test_waitsig();
ret = prctl(PR_GET_THP_DISABLE, 0, 0, 0, 0);
if (ret < 0) {
pr_perror("Getting post-migration THP-disabled flag failed");
return -1;
}
if (ret != 1) {
errno = 0;
fail("post-migration prctl(GET_THP_DISABLE) returned unexpected value: %d != 1\n", ret);
return -1;
}
if (prctl(PR_SET_THP_DISABLE, 0, 0, 0, 0)) {
pr_perror("Enabling THP failed");
return -1;