From: Brendan Jackman <jackmanb@google.com>
To: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,
Andrew Morton <akpm@linux-foundation.org>,
Shuah Khan <shuah@kernel.org>
Cc: Dev Jain <dev.jain@arm.com>,
linux-mm@kvack.org, linux-kselftest@vger.kernel.org,
linux-kernel@vger.kernel.org,
Brendan Jackman <jackmanb@google.com>
Subject: [PATCH v4 05/12] selftests/mm: Print some details when uffd-stress gets bad params
Date: Tue, 11 Mar 2025 13:18:16 +0000 [thread overview]
Message-ID: <20250311-mm-selftests-v4-5-dec210a658f5@google.com> (raw)
In-Reply-To: <20250311-mm-selftests-v4-0-dec210a658f5@google.com>
So this can be debugged more easily.
Signed-off-by: Brendan Jackman <jackmanb@google.com>
---
tools/testing/selftests/mm/uffd-stress.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/tools/testing/selftests/mm/uffd-stress.c b/tools/testing/selftests/mm/uffd-stress.c
index d6b57e5a2e1d7611aa1588ee41601ce16117a574..4ba5bf13a0108435ce8b53340b9e17ccd47e859e 100644
--- a/tools/testing/selftests/mm/uffd-stress.c
+++ b/tools/testing/selftests/mm/uffd-stress.c
@@ -457,7 +457,8 @@ int main(int argc, char **argv)
nr_pages_per_cpu = bytes / page_size / nr_parallel;
if (!nr_pages_per_cpu) {
- _err("invalid MiB");
+ _err("pages_per_cpu = 0, cannot test (%lu / %lu / %lu)",
+ bytes, page_size, nr_parallel);
usage();
}
--
2.49.0.rc0.332.g42c0ae87b1-goog
next prev parent reply other threads:[~2025-03-11 13:18 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-11 13:18 [PATCH v4 00/12] selftests/mm: Some cleanups from trying to run them Brendan Jackman
2025-03-11 13:18 ` [PATCH v4 01/12] selftests/mm: Report errno when things fail in gup_longterm Brendan Jackman
2025-03-11 13:18 ` [PATCH v4 02/12] selftests/mm: Skip uffd-stress if userfaultfd not available Brendan Jackman
2025-03-11 13:18 ` [PATCH v4 03/12] selftests/mm: Skip uffd-wp-mremap " Brendan Jackman
2025-03-11 13:18 ` [PATCH v4 04/12] selftests/mm/uffd: Rename nr_cpus -> nr_parallel Brendan Jackman
2025-03-11 13:18 ` Brendan Jackman [this message]
2025-03-11 13:18 ` [PATCH v4 06/12] selftests/mm: Don't fail uffd-stress if too many CPUs Brendan Jackman
2025-03-11 13:18 ` [PATCH v4 07/12] selftests/mm: Skip map_populate on weird filesystems Brendan Jackman
2025-03-11 13:18 ` [PATCH v4 08/12] selftests/mm: Skip gup_longterm tests " Brendan Jackman
2025-03-11 13:18 ` [PATCH v4 09/12] selftests/mm: Drop unnecessary sudo usage Brendan Jackman
2025-03-11 13:18 ` [PATCH v4 10/12] selftests/mm: Ensure uffd-wp-mremap gets pages of each size Brendan Jackman
2025-03-11 13:18 ` [PATCH v4 11/12] selftests/mm: Skip mlock tests if nobody user can't read it Brendan Jackman
2025-03-11 13:18 ` [PATCH v4 12/12] selftests/mm/mlock: Print error on failure Brendan Jackman
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