selftests: harness: remove unneeded __constructor_order_last()

__constructor_order_last() is unneeded.

If __constructor_order_last() is not called on backward-order systems,
__constructor_order will remain 0 instead of being set to
_CONSTRUCTOR_ORDER_BACKWARD (= -1).

__LIST_APPEND() will still take the 'else' branch, so there is no
difference in the behavior.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>

tools/testing/selftests/drivers/s390x/uvdevice/test_uvdevice.c

@@ -257,12 +257,6 @@ TEST_F(attest_fixture, att_inval_addr)
 	att_inval_addr_test(&self->uvio_attest.meas_addr, _metadata, self);
 }
 
-static void __attribute__((constructor)) __constructor_order_last(void)
-{
-	if (!__constructor_order)
-		__constructor_order = _CONSTRUCTOR_ORDER_BACKWARD;
-}
-
 int main(int argc, char **argv)
 {
 	int fd = open(UV_PATH, O_ACCMODE);

tools/testing/selftests/hid/hid_bpf.c

@@ -1331,12 +1331,6 @@ static int libbpf_print_fn(enum libbpf_print_level level,
 	return 0;
 }
 
-static void __attribute__((constructor)) __constructor_order_last(void)
-{
-	if (!__constructor_order)
-		__constructor_order = _CONSTRUCTOR_ORDER_BACKWARD;
-}
-
 int main(int argc, char **argv)
 {
 	/* Use libbpf 1.0 API mode */

tools/testing/selftests/kselftest_harness.h

@@ -488,12 +488,6 @@
  * Use once to append a main() to the test file.
  */
 #define TEST_HARNESS_MAIN \
-	static void __attribute__((constructor)) \
-	__constructor_order_last(void) \
-	{ \
-		if (!__constructor_order) \
-			__constructor_order = _CONSTRUCTOR_ORDER_BACKWARD; \
-	} \
 	int main(int argc, char **argv) { \
 		return test_harness_run(argc, argv); \
 	}
@@ -891,7 +885,6 @@ static struct __fixture_metadata *__fixture_list = &_fixture_global;
 static int __constructor_order;
 
 #define _CONSTRUCTOR_ORDER_FORWARD   1
-#define _CONSTRUCTOR_ORDER_BACKWARD -1
 
 static inline void __register_fixture(struct __fixture_metadata *f)
 {
@@ -1337,8 +1330,7 @@ static int test_harness_run(int argc, char **argv)
 
 static void __attribute__((constructor)) __constructor_order_first(void)
 {
-	if (!__constructor_order)
-		__constructor_order = _CONSTRUCTOR_ORDER_FORWARD;
+	__constructor_order = _CONSTRUCTOR_ORDER_FORWARD;
 }
 
 #endif  /* __KSELFTEST_HARNESS_H */

tools/testing/selftests/rtc/rtctest.c

@@ -410,13 +410,6 @@ TEST_F_TIMEOUT(rtc, alarm_wkalm_set_minute, 65) {
 	ASSERT_EQ(new, secs);
 }
 
-static void __attribute__((constructor))
-__constructor_order_last(void)
-{
-	if (!__constructor_order)
-		__constructor_order = _CONSTRUCTOR_ORDER_BACKWARD;
-}
-
 int main(int argc, char **argv)
 {
 	switch (argc) {