1 files changed, 4 insertions, 9 deletions
diff --git a/rts/STM.c b/rts/STM.c
index 3de42e2090..e8d3fc0e0b 100644
--- a/rts/STM.c
+++ b/rts/STM.c
@@ -879,17 +879,12 @@ static StgBool check_read_only(StgTRecHeader *trec STG_UNUSED) {
 
 /************************************************************************/
 
-void stmPreGCHook() {
-  nat i;
-
+void stmPreGCHook (Capability *cap) {
   lock_stm(NO_TREC);
   TRACE("stmPreGCHook");
-  for (i = 0; i < n_capabilities; i ++) {
-    Capability *cap = &capabilities[i];
-    cap -> free_tvar_watch_queues = END_STM_WATCH_QUEUE;
-    cap -> free_trec_chunks = END_STM_CHUNK_LIST;
-    cap -> free_trec_headers = NO_TREC;
-  }
+  cap->free_tvar_watch_queues = END_STM_WATCH_QUEUE;
+  cap->free_trec_chunks = END_STM_CHUNK_LIST;
+  cap->free_trec_headers = NO_TREC;
   unlock_stm(NO_TREC);
 }