kcsan: test: Use kunit_skip() to skip tests

Use the new kunit_skip() to skip tests if requirements were not met.
Signed-off-by: Marco Elver <elver@google.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

kernel/kcsan/kcsan_test.c

@@ -29,6 +29,11 @@
 #include <linux/types.h>
 #include <trace/events/printk.h>
 
+#define KCSAN_TEST_REQUIRES(test, cond) do {			\
+	if (!(cond))						\
+		kunit_skip((test), "Test requires: " #cond);	\
+} while (0)
+
 #ifdef CONFIG_CC_HAS_TSAN_COMPOUND_READ_BEFORE_WRITE
 #define __KCSAN_ACCESS_RW(alt) (KCSAN_ACCESS_COMPOUND | KCSAN_ACCESS_WRITE)
 #else
@@ -642,8 +647,7 @@ static void test_read_plain_atomic_write(struct kunit *test)
 	};
 	bool match_expect = false;
 
-	if (IS_ENABLED(CONFIG_KCSAN_IGNORE_ATOMICS))
-		return;
+	KCSAN_TEST_REQUIRES(test, !IS_ENABLED(CONFIG_KCSAN_IGNORE_ATOMICS));
 
 	begin_test_checks(test_kernel_read, test_kernel_write_atomic);
 	do {
@@ -665,8 +669,7 @@ static void test_read_plain_atomic_rmw(struct kunit *test)
 	};
 	bool match_expect = false;
 
-	if (IS_ENABLED(CONFIG_KCSAN_IGNORE_ATOMICS))
-		return;
+	KCSAN_TEST_REQUIRES(test, !IS_ENABLED(CONFIG_KCSAN_IGNORE_ATOMICS));
 
 	begin_test_checks(test_kernel_read, test_kernel_atomic_rmw);
 	do {