linux-kernel - [PATCH] Documentation: kunit: Update Kconfig parts for KUNIT's module support

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Date:   Mon, 12 Oct 2020 12:54:20 +0200
From:   SeongJae Park <sjpark@...zon.com>
To:     <brendanhiggins@...gle.com>
CC:     SeongJae Park <sjpark@...zon.de>, <corbet@....net>,
        <skhan@...uxfoundation.org>, <linux-kselftest@...r.kernel.org>,
        <kunit-dev@...glegroups.com>, <linux-doc@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH] Documentation: kunit: Update Kconfig parts for KUNIT's module support

From: SeongJae Park <sjpark@...zon.de>

If 'CONFIG_KUNIT=m', letting kunit tests that do not support loadable
module build depends on 'KUNIT' instead of 'KUNIT=y' result in compile
errors.  This commit updates the document for this.

Fixes: 9fe124bf1b77 ("kunit: allow kunit to be loaded as a module")
Signed-off-by: SeongJae Park <sjpark@...zon.de>
---
 Documentation/dev-tools/kunit/start.rst | 2 +-
 Documentation/dev-tools/kunit/usage.rst | 5 +++++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/Documentation/dev-tools/kunit/start.rst b/Documentation/dev-tools/kunit/start.rst
index d23385e3e159..454f307813ea 100644
--- a/Documentation/dev-tools/kunit/start.rst
+++ b/Documentation/dev-tools/kunit/start.rst
@@ -197,7 +197,7 @@ Now add the following to ``drivers/misc/Kconfig``:
 
 	config MISC_EXAMPLE_TEST
 		bool "Test for my example"
-		depends on MISC_EXAMPLE && KUNIT
+		depends on MISC_EXAMPLE && KUNIT=y
 
 and the following to ``drivers/misc/Makefile``:
 
diff --git a/Documentation/dev-tools/kunit/usage.rst b/Documentation/dev-tools/kunit/usage.rst
index 3c3fe8b5fecc..410380fc7fb4 100644
--- a/Documentation/dev-tools/kunit/usage.rst
+++ b/Documentation/dev-tools/kunit/usage.rst
@@ -556,6 +556,11 @@ Once the kernel is built and installed, a simple
 
 ...will run the tests.
 
+.. note::
+   Note that you should make your test depends on ``KUNIT=y`` in Kcofig if the
+   test does not support module build.  Otherwise, it will trigger compile
+   errors if ``CONFIG_KUNIT`` is ``m``.
+
 Writing new tests for other architectures
 -----------------------------------------
 
-- 
2.17.1