linux-kernel - [RFC v1 4/6] init: main: add KUnit to kernel init

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Message-Id: <20191216220555.245089-5-brendanhiggins@google.com>
Date:   Mon, 16 Dec 2019 14:05:53 -0800
From:   Brendan Higgins <brendanhiggins@...gle.com>
To:     jdike@...toit.com, richard@....at, anton.ivanov@...bridgegreys.com,
        arnd@...db.de, keescook@...omium.org, skhan@...uxfoundation.org,
        alan.maguire@...cle.com, yzaikin@...gle.com, davidgow@...gle.com,
        akpm@...ux-foundation.org, rppt@...ux.ibm.com
Cc:     gregkh@...uxfoundation.org, sboyd@...nel.org, logang@...tatee.com,
        mcgrof@...nel.org, knut.omang@...cle.com,
        linux-um@...ts.infradead.org, linux-arch@...r.kernel.org,
        linux-kselftest@...r.kernel.org, kunit-dev@...glegroups.com,
        linux-kernel@...r.kernel.org,
        Brendan Higgins <brendanhiggins@...gle.com>
Subject: [RFC v1 4/6] init: main: add KUnit to kernel init

Remove KUnit from init calls entirely, instead call directly from
kernel_init().

Signed-off-by: Brendan Higgins <brendanhiggins@...gle.com>
---
 include/kunit/test.h | 9 +++++++++
 init/main.c          | 4 ++++
 lib/kunit/executor.c | 4 +---
 3 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/include/kunit/test.h b/include/kunit/test.h
index c070798ebb765..9da4f2cc1a3fc 100644
--- a/include/kunit/test.h
+++ b/include/kunit/test.h
@@ -196,6 +196,15 @@ void kunit_init_test(struct kunit *test, const char *name);
 
 int kunit_run_tests(struct kunit_suite *suite);
 
+#if IS_ENABLED(CONFIG_KUNIT)
+int kunit_executor_init(void);
+#else
+static inline int kunit_executor_init(void)
+{
+	return 0;
+}
+#endif /* IS_ENABLED(CONFIG_KUNIT) */
+
 /**
  * kunit_test_suite() - used to register a &struct kunit_suite with KUnit.
  *
diff --git a/init/main.c b/init/main.c
index 91f6ebb30ef04..b299396a5466b 100644
--- a/init/main.c
+++ b/init/main.c
@@ -103,6 +103,8 @@
 #define CREATE_TRACE_POINTS
 #include <trace/events/initcall.h>
 
+#include <kunit/test.h>
+
 static int kernel_init(void *);
 
 extern void init_IRQ(void);
@@ -1190,6 +1192,8 @@ static noinline void __init kernel_init_freeable(void)
 
 	do_basic_setup();
 
+	kunit_executor_init();
+
 	/* Open the /dev/console on the rootfs, this should never fail */
 	if (ksys_open((const char __user *) "/dev/console", O_RDWR, 0) < 0)
 		pr_err("Warning: unable to open an initial console.\n");
diff --git a/lib/kunit/executor.c b/lib/kunit/executor.c
index 978086cfd257d..ca880224c0bab 100644
--- a/lib/kunit/executor.c
+++ b/lib/kunit/executor.c
@@ -32,12 +32,10 @@ static bool kunit_run_all_tests(void)
 	return !has_test_failed;
 }
 
-static int kunit_executor_init(void)
+int kunit_executor_init(void)
 {
 	if (kunit_run_all_tests())
 		return 0;
 	else
 		return -EFAULT;
 }
-
-late_initcall(kunit_executor_init);
-- 
2.24.1.735.g03f4e72817-goog