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authorAlan Maguire <alan.maguire@oracle.com>2020-03-26 14:25:07 +0000
committerShuah Khan <skhan@linuxfoundation.org>2020-03-26 14:07:18 -0600
commite2219db280e3fe52e5cc242e4225dd2685af3c56 (patch)
treeda1d0dc3234bec3e5dfcb5eee5ff6fec4715b914 /include/kunit
parent0d5792c9bc458774a3bfdf4b194f1903fe558231 (diff)
downloadlinux-e2219db280e3fe52e5cc242e4225dd2685af3c56.tar.bz2
kunit: add debugfs /sys/kernel/debug/kunit/<suite>/results display
add debugfs support for displaying kunit test suite results; this is especially useful for module-loaded tests to allow disentangling of test result display from other dmesg events. debugfs support is provided if CONFIG_KUNIT_DEBUGFS=y. As well as printk()ing messages, we append them to a per-test log. Signed-off-by: Alan Maguire <alan.maguire@oracle.com> Reviewed-by: Brendan Higgins <brendanhiggins@google.com> Reviewed-by: Frank Rowand <frank.rowand@sony.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Diffstat (limited to 'include/kunit')
-rw-r--r--include/kunit/test.h54
1 files changed, 46 insertions, 8 deletions
diff --git a/include/kunit/test.h b/include/kunit/test.h
index 2dfb550c6723..f7b2ed4c127e 100644
--- a/include/kunit/test.h
+++ b/include/kunit/test.h
@@ -81,6 +81,9 @@ struct kunit_resource {
struct kunit;
+/* Size of log associated with test. */
+#define KUNIT_LOG_SIZE 512
+
/**
* struct kunit_case - represents an individual test case.
*
@@ -123,8 +126,14 @@ struct kunit_case {
/* private: internal use only. */
bool success;
+ char *log;
};
+static inline char *kunit_status_to_string(bool status)
+{
+ return status ? "ok" : "not ok";
+}
+
/**
* KUNIT_CASE - A helper for creating a &struct kunit_case
*
@@ -157,6 +166,10 @@ struct kunit_suite {
int (*init)(struct kunit *test);
void (*exit)(struct kunit *test);
struct kunit_case *test_cases;
+
+ /* private - internal use only */
+ struct dentry *debugfs;
+ char *log;
};
/**
@@ -175,6 +188,7 @@ struct kunit {
/* private: internal use only. */
const char *name; /* Read only after initialization! */
+ char *log; /* Points at case log after initialization */
struct kunit_try_catch try_catch;
/*
* success starts as true, and may only be set to false during a
@@ -193,10 +207,19 @@ struct kunit {
struct list_head resources; /* Protected by lock. */
};
-void kunit_init_test(struct kunit *test, const char *name);
+void kunit_init_test(struct kunit *test, const char *name, char *log);
int kunit_run_tests(struct kunit_suite *suite);
+size_t kunit_suite_num_test_cases(struct kunit_suite *suite);
+
+unsigned int kunit_test_case_num(struct kunit_suite *suite,
+ struct kunit_case *test_case);
+
+int __kunit_test_suites_init(struct kunit_suite **suites);
+
+void __kunit_test_suites_exit(struct kunit_suite **suites);
+
/**
* kunit_test_suites() - used to register one or more &struct kunit_suite
* with KUnit.
@@ -226,20 +249,22 @@ int kunit_run_tests(struct kunit_suite *suite);
static struct kunit_suite *suites[] = { __VA_ARGS__, NULL}; \
static int kunit_test_suites_init(void) \
{ \
- unsigned int i; \
- for (i = 0; suites[i] != NULL; i++) \
- kunit_run_tests(suites[i]); \
- return 0; \
+ return __kunit_test_suites_init(suites); \
} \
late_initcall(kunit_test_suites_init); \
static void __exit kunit_test_suites_exit(void) \
{ \
- return; \
+ return __kunit_test_suites_exit(suites); \
} \
module_exit(kunit_test_suites_exit)
#define kunit_test_suite(suite) kunit_test_suites(&suite)
+#define kunit_suite_for_each_test_case(suite, test_case) \
+ for (test_case = suite->test_cases; test_case->run_case; test_case++)
+
+bool kunit_suite_has_succeeded(struct kunit_suite *suite);
+
/*
* Like kunit_alloc_resource() below, but returns the struct kunit_resource
* object that contains the allocation. This is mostly for testing purposes.
@@ -356,8 +381,21 @@ static inline void *kunit_kzalloc(struct kunit *test, size_t size, gfp_t gfp)
void kunit_cleanup(struct kunit *test);
-#define kunit_printk(lvl, test, fmt, ...) \
- printk(lvl "\t# %s: " fmt, (test)->name, ##__VA_ARGS__)
+void kunit_log_append(char *log, const char *fmt, ...);
+
+/*
+ * printk and log to per-test or per-suite log buffer. Logging only done
+ * if CONFIG_KUNIT_DEBUGFS is 'y'; if it is 'n', no log is allocated/used.
+ */
+#define kunit_log(lvl, test_or_suite, fmt, ...) \
+ do { \
+ printk(lvl fmt, ##__VA_ARGS__); \
+ kunit_log_append((test_or_suite)->log, fmt "\n", \
+ ##__VA_ARGS__); \
+ } while (0)
+
+#define kunit_printk(lvl, test, fmt, ...) \
+ kunit_log(lvl, test, "\t# %s: " fmt, (test)->name, ##__VA_ARGS__)
/**
* kunit_info() - Prints an INFO level message associated with @test.