Say what StgTSOBlockInfo is for, where to read about it.

diff --git a/includes/TSO.h b/includes/TSO.h
index be50c12..128ea1d 100644 (file)
--- a/includes/TSO.h
+++ b/includes/TSO.h
@@ -67,6 +67,7 @@ typedef struct {
 } StgAsyncIOResult;
 #endif
 
+/* Reason for thread being blocked. See comment above struct StgTso_. */
 typedef union {
   StgClosure *closure;
   struct StgTSO_ *tso;