Initialize SDT probes during SI_SUB_DTRACE_PROVIDER.

This is consistent with all other DTrace providers and ensures that
SDT probes are available for boot-time tracing.

MFC after:	2 weeks

1 files changed, 5 insertions, 13 deletions

diff --git a/sys/cddl/dev/sdt/sdt.c b/sys/cddl/dev/sdt/sdt.c
index 4e5dd71..cef816f 100644
--- a/sys/cddl/dev/sdt/sdt.c
+++ b/sys/cddl/dev/sdt/sdt.c
@@ -384,28 +384,20 @@ sdt_unload()
 static int
 sdt_modevent(module_t mod __unused, int type, void *data __unused)
 {
-	int error = 0;
 
 	switch (type) {
 	case MOD_LOAD:
-		sdt_load();
-		break;
-
 	case MOD_UNLOAD:
-		error = sdt_unload();
-		break;
-
 	case MOD_SHUTDOWN:
-		break;
-
+		return (0);
 	default:
-		error = EOPNOTSUPP;
-		break;
+		return (EOPNOTSUPP);
 	}
-
-	return (error);
 }
 
+SYSINIT(sdt_load, SI_SUB_DTRACE_PROVIDER, SI_ORDER_ANY, sdt_load, NULL);
+SYSUNINIT(sdt_unload, SI_SUB_DTRACE_PROVIDER, SI_ORDER_ANY, sdt_unload, NULL);
+
 DEV_MODULE(sdt, sdt_modevent, NULL);
 MODULE_VERSION(sdt, 1);
 MODULE_DEPEND(sdt, dtrace, 1, 1, 1);