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-rw-r--r--src/core/lib/iomgr/ev_posix.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/core/lib/iomgr/ev_posix.h b/src/core/lib/iomgr/ev_posix.h
index 1a9e5c115a..7ce1e06f20 100644
--- a/src/core/lib/iomgr/ev_posix.h
+++ b/src/core/lib/iomgr/ev_posix.h
@@ -42,6 +42,8 @@
#include "src/core/lib/iomgr/wakeup_fd_posix.h"
#include "src/core/lib/iomgr/workqueue.h"
+extern int grpc_polling_trace; /* Disabled by default */
+
typedef struct grpc_fd grpc_fd;
typedef struct grpc_event_engine_vtable {