diff --git a/sys/kern/kern_tslog.c b/sys/kern/kern_tslog.c
--- a/sys/kern/kern_tslog.c
+++ b/sys/kern/kern_tslog.c
@@ -220,3 +220,13 @@
     CTLTYPE_STRING|CTLFLAG_RD|CTLFLAG_MPSAFE|CTLFLAG_SKIP,
     0, 0, sysctl_debug_tslog_user,
     "", "Dump recorded userland event timestamps");
+
+void
+sysinit_tslog_shim(const void *data)
+{
+	const struct sysinit_tslog *x = data;
+
+	tslog(curthread, TS_ENTER, "SYSINIT", x->name);
+	(x->func)(x->data);
+	tslog(curthread, TS_EXIT, "SYSINIT", x->name);
+}
diff --git a/sys/sys/kernel.h b/sys/sys/kernel.h
--- a/sys/sys/kernel.h
+++ b/sys/sys/kernel.h
@@ -249,15 +249,8 @@
 	const void *data;
 	const char *name;
 };
-static inline void
-sysinit_tslog_shim(const void *data)
-{
-	const struct sysinit_tslog *x = data;
-
-	TSRAW(curthread, TS_ENTER, "SYSINIT", x->name);
-	(x->func)(x->data);
-	TSRAW(curthread, TS_EXIT, "SYSINIT", x->name);
-}
+void sysinit_tslog_shim(const void *);
+
 #define	C_SYSINIT(uniquifier, subsystem, order, func, ident)	\
 	static struct sysinit_tslog uniquifier ## _sys_init_tslog = {	\
 		func,						\