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selftests/mm: skip uffd-stress if userfaultfd not available

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It's pretty obvious that the test wouldn't work if you don't have the
feature enabled.  But, it's still useful to SKIP instead of failing so the
reader can immediately tell that this is the reason why.

Link: https://lkml.kernel.org/r/20250311-mm-selftests-v4-2-dec210a658f5@google.com
Signed-off-by: Brendan Jackman <jackmanb@google.com>
Reviewed-by: Dev Jain <dev.jain@arm.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Mateusz Guzik <mjguzik@gmail.com>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Brendan Jackman
2025-03-11 13:18:13 +00:00
committed by Andrew Morton
parent 800ddf3cd7
commit 0046dbed80
1 changed files with 2 additions and 2 deletions
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4
tools/testing/selftests/mm/uffd-stress.c
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@@ -412,8 +412,8 @@ static void parse_test_type_arg(const char *raw_type)
* feature.
*/
if (uffd_get_features(&features))
err("failed to get available features");
if (uffd_get_features(&features) && errno == ENOENT)
ksft_exit_skip("failed to get available features (%d)\n", errno);
test_uffdio_wp = test_uffdio_wp &&
(features & UFFD_FEATURE_PAGEFAULT_FLAG_WP);