Support for measurement code from bbbdiss

1 files changed, 3 insertions, 0 deletions

diff --git a/include/litmus/rt_param.h b/include/litmus/rt_param.h
index 6c05b14e7ce4..c6264d01d47e 100644
--- a/include/litmus/rt_param.h
+++ b/include/litmus/rt_param.h
@@ -92,6 +92,9 @@ union np_flag {
 struct control_page {
         volatile union np_flag sched;
 
+        /* locking overhead tracing: time stamp prior to system call */
+        uint64_t ts_syscall_start; /* Feather-Trace cycles */
+
         /* to be extended */
 };