Until now, transhuge-stress runs until its explicitly killed, so when
invoked by run_kselftest.sh, it would run until the test timeout, then
it would be killed and the test would be marked as failed.
Add a new, optional command line parameter that allows the user to
specify the duration in seconds that the program should run. The program
exits after this duration with a success (0) exit code. If the argument
is omitted the old behacvior remains.
On it's own, this doesn't quite solve our problem because
run_kselftest.sh does not allow passing parameters to the program under
test. But we will shortly move this to run_vmtests.sh, which does allow
parameter passing.
Signed-off-by: Ryan Roberts <ryan.roberts@xxxxxxx>
---
tools/testing/selftests/mm/transhuge-stress.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/tools/testing/selftests/mm/transhuge-stress.c b/tools/testing/selftests/mm/transhuge-stress.c
index ba9d37ad3a89..c61fb9350b8c 100644
--- a/tools/testing/selftests/mm/transhuge-stress.c
+++ b/tools/testing/selftests/mm/transhuge-stress.c
@@ -25,13 +25,14 @@ int main(int argc, char **argv)
{
size_t ram, len;
void *ptr, *p;
- struct timespec a, b;
+ struct timespec start, a, b;
int i = 0;
char *name = NULL;
double s;
uint8_t *map;
size_t map_len;
int pagemap_fd;
+ int duration = 0;
ram = sysconf(_SC_PHYS_PAGES);
if (ram > SIZE_MAX / psize() / 4)
@@ -42,9 +43,11 @@ int main(int argc, char **argv)
while (++i < argc) {
if (!strcmp(argv[i], "-h"))
- errx(1, "usage: %s [size in MiB]", argv[0]);
+ errx(1, "usage: %s [-f <filename>] [-d <duration>] [size in MiB]", argv[0]);
else if (!strcmp(argv[i], "-f"))
name = argv[++i];
+ else if (!strcmp(argv[i], "-d"))
+ duration = atoi(argv[++i]);
else
len = atoll(argv[i]) << 20;
}
@@ -78,6 +81,8 @@ int main(int argc, char **argv)
if (!map)
errx(2, "map malloc");
+ clock_gettime(CLOCK_MONOTONIC, &start);
+
while (1) {
int nr_succeed = 0, nr_failed = 0, nr_pages = 0;
@@ -118,5 +123,8 @@ int main(int argc, char **argv)
"%4d succeed, %4d failed, %4d different pages",
s, s * 1000 / (len >> HPAGE_SHIFT), len / s / (1 << 20),
nr_succeed, nr_failed, nr_pages);
+
+ if (duration > 0 && b.tv_sec - start.tv_sec >= duration)
+ return 0;
}
}
--
2.25.1
