diff --git a/sys/compat/linuxkpi/common/include/linux/string_helpers.h b/sys/compat/linuxkpi/common/include/linux/string_helpers.h
new file mode 100644
--- /dev/null
+++ b/sys/compat/linuxkpi/common/include/linux/string_helpers.h
@@ -0,0 +1,40 @@
+/* Public domain. */
+
+#ifndef _LINUXKPI_LINUX_STRING_HELPERS_H
+#define _LINUXKPI_LINUX_STRING_HELPERS_H
+
+#include <linux/types.h>
+
+static inline const char *
+str_yes_no(bool x)
+{
+	if (x)
+		return "yes";
+	return "no";
+}
+
+static inline const char *
+str_on_off(bool x)
+{
+	if (x)
+		return "on";
+	return "off";
+}
+
+static inline const char *
+str_enabled_disabled(bool x)
+{
+	if (x)
+		return "enabled";
+	return "disabled";
+}
+
+static inline const char *
+str_enable_disable(bool x)
+{
+	if (x)
+		return "enable";
+	return "disable";
+}
+
+#endif