1 files changed, 4 insertions, 0 deletions
diff --git a/sys/sys/mutex.h b/sys/sys/mutex.h
index ca81f74..4d3a9d5 100644
--- a/sys/sys/mutex.h
+++ b/sys/sys/mutex.h
@@ -41,6 +41,10 @@
 #include <machine/bus.h>
 #include <machine/cpufunc.h>
 #include <machine/globals.h>
+#ifndef curproc
+struct proc;
+extern struct proc *curproc;
+#endif
 #endif	/* _KERNEL_ */
 #endif	/* !LOCORE */