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Subject[PATCH v5 linux-kselftest-test 0/6] kunit: support building core/tests as modules
Date
The current kunit execution model is to provide base kunit functionality
and tests built-in to the kernel. The aim of this series is to allow
building kunit itself and tests as modules. This in turn allows a
simple form of selective execution; load the module you wish to test.
In doing so, kunit itself (if also built as a module) will be loaded as
an implicit dependency.

Because this requires a core API modification - if a module delivers
multiple suites, they must be declared with the kunit_test_suites()
macro - we're proposing this patch set as a candidate to be applied to the
test tree before too many kunit consumers appear. We attempt to deal
with existing consumers in patch 3.

Changes since v4:
- fixed signoff chain to use Co-developed-by: prior to Knut's signoff
(Stephen, all patches)
- added Reviewed-by, Tested-by for patches 1, 2, 4 and 6
- updated comment describing try-catch-impl.h (Stephen, patch 2)
- fixed MODULE_LICENSEs to be GPL v2 (Stephen, patches 3, 5)
- added __init to kunit_init() (Stephen, patch 5)

Changes since v3:
- removed symbol lookup patch for separate submission later
- removed use of sysctl_hung_task_timeout_seconds (patch 4, as discussed
with Brendan and Stephen)
- disabled build of string-stream-test when CONFIG_KUNIT_TEST=m; this
is to avoid having to deal with symbol lookup issues
- changed string-stream-impl.h back to string-stream.h (Brendan)
- added module build support to new list, ext4 tests

Changes since v2:
- moved string-stream.h header to lib/kunit/string-stream-impl.h (Brendan)
(patch 1)
- split out non-exported interfaces in try-catch-impl.h (Brendan)
(patch 2)
- added kunit_find_symbol() and KUNIT_INIT_SYMBOL to lookup non-exported
symbols (patches 3, 4)
- removed #ifdef MODULE around module licenses (Randy, Brendan, Andy)
(patch 4)
- replaced kunit_test_suite() with kunit_test_suites() rather than
supporting both (Brendan) (patch 4)
- lookup sysctl_hung_task_timeout_secs as kunit may be built as a module
and the symbol may not be available (patch 5)

Alan Maguire (6):
kunit: move string-stream.h to lib/kunit
kunit: hide unexported try-catch interface in try-catch-impl.h
kunit: allow kunit tests to be loaded as a module
kunit: remove timeout dependence on sysctl_hung_task_timeout_seconds
kunit: allow kunit to be loaded as a module
kunit: update documentation to describe module-based build

Documentation/dev-tools/kunit/faq.rst | 3 +-
Documentation/dev-tools/kunit/index.rst | 3 ++
Documentation/dev-tools/kunit/usage.rst | 16 ++++++++++
fs/ext4/Kconfig | 2 +-
fs/ext4/Makefile | 5 +++
fs/ext4/inode-test.c | 4 ++-
include/kunit/assert.h | 3 +-
include/kunit/test.h | 35 ++++++++++++++------
include/kunit/try-catch.h | 10 ------
kernel/sysctl-test.c | 4 ++-
lib/Kconfig.debug | 4 +--
lib/kunit/Kconfig | 6 ++--
lib/kunit/Makefile | 14 +++++---
lib/kunit/assert.c | 10 ++++++
lib/kunit/{example-test.c => kunit-example-test.c} | 4 ++-
lib/kunit/{test-test.c => kunit-test.c} | 7 ++--
lib/kunit/string-stream-test.c | 5 +--
lib/kunit/string-stream.c | 3 +-
{include => lib}/kunit/string-stream.h | 0
lib/kunit/test.c | 25 ++++++++++++++-
lib/kunit/try-catch-impl.h | 27 ++++++++++++++++
lib/kunit/try-catch.c | 37 +++++-----------------
lib/list-test.c | 4 ++-
23 files changed, 160 insertions(+), 71 deletions(-)
rename lib/kunit/{example-test.c => kunit-example-test.c} (97%)
rename lib/kunit/{test-test.c => kunit-test.c} (98%)
rename {include => lib}/kunit/string-stream.h (100%)
create mode 100644 lib/kunit/try-catch-impl.h

--
1.8.3.1

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