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Mark Brown 3f192afbed selftests/mm: add helper for logging test start and results
Several of the MM tests have a pattern of printing a description of the
test to be run then reporting the actual TAP result using a generic string
not connected to the specific test, often in a shared function used by
many tests.  The name reported typically varies depending on the specific
result rather than the test too.  This causes problems for tooling that
works with test results, the names reported with the results are used to
deduplicate tests and track them between runs so both duplicated names and
changing names cause trouble for things like UIs and automated bisection.

As a first step towards matching these tests better with the expectations
of kselftest provide helpers which record the test name as part of the
initial print and then use that as part of reporting a result.

This is not added as a generic kselftest helper partly because the use of
a variable to store the test name doesn't fit well with the header only
implementation of kselftest.h and partly because it's not really an
intended pattern.  Ideally at some point the mm tests that use it will be
updated to not need it.

Link: https://lkml.kernel.org/r/20250527-selftests-mm-cow-dedupe-v2-2-ff198df8e38e@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
History 2025-05-31 22:46:16 -07:00
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