testing/selftests/kselftest_module.h

   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 static 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
  25 static 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)                   \
  41 static int __init __module##_init(void)                 \
  42 {                                                       \
  43         pr_info("loaded.\n");                           \
  44         selftest();                                     \
  45         return kstm_report(total_tests, failed_tests, skipped_tests);   \
  46 }                                                       \
  47 static void __exit __module##_exit(void)                \
  48 {                                                       \
  49         pr_info("unloaded.\n");                         \
  50 }                                                       \
  51 module_init(__module##_init);                           \
  52 module_exit(__module##_exit)
  53
  54 #endif  /* __KSELFTEST_MODULE_H */