Expose all EventLog events as DTrace probes

- Defines a DTrace provider, called 'HaskellEvent', that provides a probe
  for every event of the eventlog framework.
- In contrast to the original eventlog, the DTrace probes are available in
  all flavours of the runtime system (DTrace probes have virtually no
  overhead if not enabled); when -DTRACING is defined both the regular
  event log as well as DTrace probes can be used.
- Currently, Mac OS X only.  User-space DTrace probes are implemented
  differently on Mac OS X than in the original DTrace implementation.
  Nevertheless, it shouldn't be too hard to enable these probes on other
  platforms, too.
- Documentation is at http://hackage.haskell.org/trac/ghc/wiki/DTrace

1 files changed, 1 insertions, 1 deletions

diff --git a/rts/Sparks.c b/rts/Sparks.c
index a17b78ce57..e5e6d7e955 100644
--- a/rts/Sparks.c
+++ b/rts/Sparks.c
@@ -47,7 +47,7 @@ createSparkThread (Capability *cap)
     tso = createIOThread (cap, RtsFlags.GcFlags.initialStkSize, 
                           &base_GHCziConc_runSparks_closure);
 
-    traceSchedEvent(cap, EVENT_CREATE_SPARK_THREAD, 0, tso->id);
+    traceEventCreateSparkThread(cap, tso->id);
 
     appendToRunQueue(cap,tso);
 }