1 /* SPDX-License-Identifier: GPL-2.0+ */
2 #ifndef __KSELFTEST_MODULE_H
3 #define __KSELFTEST_MODULE_H
4 
5 #include <linux/module.h>
6 
7 /*
8  * Test framework for writing test modules to be loaded by kselftest.
9  * See Documentation/dev-tools/kselftest.rst for an example test module.
10  */
11 
12 #define KSTM_MODULE_GLOBALS()			\
13 static unsigned int total_tests __initdata;	\
14 static unsigned int failed_tests __initdata
15 
16 #define KSTM_CHECK_ZERO(x) do {						\
17 	total_tests++;							\
18 	if (x) {							\
19 		pr_warn("TC failed at %s:%d\n", __func__, __LINE__);	\
20 		failed_tests++;						\
21 	}								\
22 } while (0)
23 
24 static inline int kstm_report(unsigned int total_tests, unsigned int failed_tests)
25 {
26 	if (failed_tests == 0)
27 		pr_info("all %u tests passed\n", total_tests);
28 	else
29 		pr_warn("failed %u out of %u tests\n", failed_tests, total_tests);
30 
31 	return failed_tests ? -EINVAL : 0;
32 }
33 
34 #define KSTM_MODULE_LOADERS(__module)			\
35 static int __init __module##_init(void)			\
36 {							\
37 	pr_info("loaded.\n");				\
38 	selftest();					\
39 	return kstm_report(total_tests, failed_tests);	\
40 }							\
41 static void __exit __module##_exit(void)		\
42 {							\
43 	pr_info("unloaded.\n");				\
44 }							\
45 module_init(__module##_init);				\
46 module_exit(__module##_exit)
47 
48 #endif	/* __KSELFTEST_MODULE_H */
49