small fixes

1 files changed, 6 insertions, 1 deletions

diff --git a/src/core/lib/surface/completion_queue.c b/src/core/lib/surface/completion_queue.c
index ecc127876b..eaad614842 100644
--- a/src/core/lib/surface/completion_queue.c
+++ b/src/core/lib/surface/completion_queue.c
@@ -50,6 +50,8 @@
 #include "src/core/lib/surface/event_string.h"
 #include "src/core/lib/surface/surface_trace.h"
 
+int grpc_trace_operation_failures;
+
 typedef struct {
   grpc_pollset_worker **worker;
   void *tag;
@@ -231,12 +233,15 @@ void grpc_cq_end_op(grpc_exec_ctx *exec_ctx, grpc_completion_queue *cc,
 #endif
 
   GPR_TIMER_BEGIN("grpc_cq_end_op", 0);
-  if (grpc_api_trace) {
+  if (grpc_api_trace || (grpc_trace_operation_failures && error != GRPC_ERROR_NONE)) {
     const char *errmsg = grpc_error_string(error);
     GRPC_API_TRACE(
         "grpc_cq_end_op(exec_ctx=%p, cc=%p, tag=%p, error=%s, done=%p, "
         "done_arg=%p, storage=%p)",
         7, (exec_ctx, cc, tag, errmsg, done, done_arg, storage));
+    if (grpc_trace_operation_failures) {
+	    gpr_log(GPR_ERROR, "Operation failed: tag=%p, error=%s", tag, errmsg);   
+    } 
     grpc_error_free_string(errmsg);
   }