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()			\
13static unsigned int total_tests __initdata;	\
14static unsigned int failed_tests __initdata;	\
15static unsigned int skipped_tests __initdata
16
17#define KSTM_CHECK_ZERO(x) do {						\
18	total_tests++;							\
19	if (x) {							\
20		pr_warn("TC failed at %s:%d\n", __func__, __LINE__);	\
21		failed_tests++;						\
22	}								\
23} while (0)
24
25static inline int kstm_report(unsigned int total_tests, unsigned int failed_tests,
26			      unsigned int skipped_tests)
27{
28	if (failed_tests == 0) {
29		if (skipped_tests) {
30			pr_info("skipped %u tests\n", skipped_tests);
31			pr_info("remaining %u tests passed\n", total_tests);
32		} else
33			pr_info("all %u tests passed\n", total_tests);
34	} else
35		pr_warn("failed %u out of %u tests\n", failed_tests, total_tests);
36
37	return failed_tests ? -EINVAL : 0;
38}
39
40#define KSTM_MODULE_LOADERS(__module)			\
41static int __init __module##_init(void)			\
42{							\
43	pr_info("loaded.\n");				\
44	selftest();					\
45	return kstm_report(total_tests, failed_tests, skipped_tests);	\
46}							\
47static void __exit __module##_exit(void)		\
48{							\
49	pr_info("unloaded.\n");				\
50}							\
51module_init(__module##_init);				\
52module_exit(__module##_exit)
53
54#endif	/* __KSELFTEST_MODULE_H */