1 files changed, 22 insertions, 0 deletions
diff --git a/tools/testing/selftests/kselftest.h b/tools/testing/selftests/kselftest.h
index c3b6d2604b1e..afbcf8412ae5 100644
--- a/tools/testing/selftests/kselftest.h
+++ b/tools/testing/selftests/kselftest.h
@@ -54,6 +54,7 @@
 #include <stdlib.h>
 #include <unistd.h>
 #include <stdarg.h>
+#include <stdbool.h>
 #include <string.h>
 #include <stdio.h>
 #include <sys/utsname.h>
@@ -92,6 +93,14 @@
 #endif
 #define __printf(a, b)   __attribute__((format(printf, a, b)))
 
+#ifndef __always_unused
+#define __always_unused __attribute__((__unused__))
+#endif
+
+#ifndef __maybe_unused
+#define __maybe_unused __attribute__((__unused__))
+#endif
+
 /* counters */
 struct ksft_count {
 	unsigned int ksft_pass;
@@ -104,6 +113,7 @@ struct ksft_count {
 
 static struct ksft_count ksft_cnt;
 static unsigned int ksft_plan;
+static bool ksft_debug_enabled;
 
 static inline unsigned int ksft_test_num(void)
 {
@@ -175,6 +185,18 @@ static inline __printf(1, 2) void ksft_print_msg(const char *msg, ...)
 	va_end(args);
 }
 
+static inline void ksft_print_dbg_msg(const char *msg, ...)
+{
+	va_list args;
+
+	if (!ksft_debug_enabled)
+		return;
+
+	va_start(args, msg);
+	ksft_print_msg(msg, args);
+	va_end(args);
+}
+
 static inline void ksft_perror(const char *msg)
 {
 	ksft_print_msg("%s: %s (%d)\n", msg, strerror(errno), errno);