Move GC tracing into a separate trace class

Previously GC was included in the scheduler trace class. It can be
enabled specifically with +RTS -vg or -lg, though note that both -v
and -l on their own now default to a sensible set of trace classes,
currently: scheduler, gc and sparks.

1 files changed, 1 insertions, 0 deletions

diff --git a/includes/rts/Flags.h b/includes/rts/Flags.h
index 63dc72e8f8..475f4d3fd7 100644
--- a/includes/rts/Flags.h
+++ b/includes/rts/Flags.h
@@ -128,6 +128,7 @@ struct TRACE_FLAGS {
     int tracing;
     rtsBool timestamp;      /* show timestamp in stderr output */
     rtsBool scheduler;      /* trace scheduler events */
+    rtsBool gc;             /* trace GC events */
     rtsBool sparks;         /* trace spark events */
 };