[PATCH 2/4] kselftest_module.h: unconditionally expand the KSTM_MODULE_GLOBALS() macro

From: Rasmus Villemoes
Date: Sun Oct 25 2020 - 17:48:54 EST


Two out of three users of the kselftest_module.h header
manually define the failed_tests/total_tests variables instead of
making use of the KSTM_MODULE_GLOBALS() macro. However, instead of
just replacing those definitions with an invocation of that macro,
just unconditionally define them in the header file itself.

A coming change will add a few more global variables, and at least one
of those will be referenced from kstm_report() - however, that's not
possible currently, since when the definition is postponed until the
test module invokes KSTM_MODULE_GLOBALS(), the variable is not defined
by the time the compiler parses kstm_report().

Signed-off-by: Rasmus Villemoes <linux@xxxxxxxxxxxxxxxxxx>
---
Documentation/dev-tools/kselftest.rst | 2 --
lib/test_bitmap.c | 3 ---
lib/test_printf.c | 2 --
lib/test_strscpy.c | 2 --
tools/testing/selftests/kselftest_module.h | 5 ++---
5 files changed, 2 insertions(+), 12 deletions(-)

diff --git a/Documentation/dev-tools/kselftest.rst b/Documentation/dev-tools/kselftest.rst
index a901def730d95ca4c2c1..9899e86ed470ae527fdc 100644
--- a/Documentation/dev-tools/kselftest.rst
+++ b/Documentation/dev-tools/kselftest.rst
@@ -281,8 +281,6 @@ A bare bones test module might look like this:

#include "../tools/testing/selftests/kselftest/module.h"

- KSTM_MODULE_GLOBALS();
-
/*
* Kernel module for testing the foobinator
*/
diff --git a/lib/test_bitmap.c b/lib/test_bitmap.c
index 4425a1dd4ef1c7d85973..02fc667a9b3d5d7de7eb 100644
--- a/lib/test_bitmap.c
+++ b/lib/test_bitmap.c
@@ -16,9 +16,6 @@

#include "../tools/testing/selftests/kselftest_module.h"

-static unsigned total_tests __initdata;
-static unsigned failed_tests __initdata;
-
static char pbl_buffer[PAGE_SIZE] __initdata;

static const unsigned long exp1[] __initconst = {
diff --git a/lib/test_printf.c b/lib/test_printf.c
index 7ac87f18a10ff8209ad5..1ed4a27390cb621715ab 100644
--- a/lib/test_printf.c
+++ b/lib/test_printf.c
@@ -30,8 +30,6 @@
#define PAD_SIZE 16
#define FILL_CHAR '$'

-static unsigned total_tests __initdata;
-static unsigned failed_tests __initdata;
static char *test_buffer __initdata;
static char *alloced_buffer __initdata;

diff --git a/lib/test_strscpy.c b/lib/test_strscpy.c
index a827f94601f5d945b163..be477a52d87185ee6a01 100644
--- a/lib/test_strscpy.c
+++ b/lib/test_strscpy.c
@@ -10,8 +10,6 @@
* Kernel module for testing 'strscpy' family of functions.
*/

-KSTM_MODULE_GLOBALS();
-
/*
* tc() - Run a specific test case.
* @src: Source string, argument to strscpy_pad()
diff --git a/tools/testing/selftests/kselftest_module.h b/tools/testing/selftests/kselftest_module.h
index e8eafaf0941aa716d9dc..c81c0b0c054befaf665b 100644
--- a/tools/testing/selftests/kselftest_module.h
+++ b/tools/testing/selftests/kselftest_module.h
@@ -9,9 +9,8 @@
* See Documentation/dev-tools/kselftest.rst for an example test module.
*/

-#define KSTM_MODULE_GLOBALS() \
-static unsigned int total_tests __initdata; \
-static unsigned int failed_tests __initdata
+static unsigned int total_tests __initdata;
+static unsigned int failed_tests __initdata;

#define KSTM_CHECK_ZERO(x) do { \
total_tests++; \
--
2.23.0