The patch titled
Subject: selftests/mm: optionally pass duration to transhuge-stress
has been added to the -mm mm-unstable branch. Its filename is
selftests-mm-optionally-pass-duration-to-transhuge-stress.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/selftests-mm-optionally-pass-duration-to-transhuge-stress.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Ryan Roberts <ryan.roberts@xxxxxxx>
Subject: selftests/mm: optionally pass duration to transhuge-stress
Date: Mon, 24 Jul 2023 09:25:21 +0100
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.
Link: https://lkml.kernel.org/r/20230724082522.1202616-8-ryan.roberts@xxxxxxx
Signed-off-by: Ryan Roberts <ryan.roberts@xxxxxxx>
Acked-by: David Hildenbrand <david@xxxxxxxxxx>
Cc: Florent Revest <revest@xxxxxxxxxxxx>
Cc: Jérôme Glisse <jglisse@xxxxxxxxxx>
Cc: John Hubbard <jhubbard@xxxxxxxxxx>
Cc: Mark Brown <broonie@xxxxxxxxxx>
Cc: Peter Xu <peterx@xxxxxxxxxx>
Cc: Shuah Khan <shuah@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
tools/testing/selftests/mm/transhuge-stress.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
--- a/tools/testing/selftests/mm/transhuge-stress.c~selftests-mm-optionally-pass-duration-to-transhuge-stress
+++ a/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;
}
}
_
Patches currently in -mm which might be from ryan.roberts@xxxxxxx are
mm-allow-deferred-splitting-of-arbitrary-large-anon-folios.patch
mm-implement-folio_remove_rmap_range.patch
mm-batch-zap-large-anonymous-folio-pte-mappings.patch
selftests-line-buffer-test-programs-stdout.patch
selftests-mm-skip-soft-dirty-tests-on-arm64.patch
selftests-mm-enable-mrelease_test-for-arm64.patch
selftests-mm-fix-thuge-gen-test-bugs.patch
selftests-mm-va_high_addr_switch-should-skip-unsupported-arm64-configs.patch
selftests-mm-make-migration-test-robust-to-failure.patch
selftests-mm-optionally-pass-duration-to-transhuge-stress.patch
selftests-mm-run-all-tests-from-run_vmtestssh.patch
