From 88f2d7fbab4ceba14946cb86c018bc8a2025e876 Mon Sep 17 00:00:00 2001 From: "Bjoern B. Brandenburg" Date: Mon, 25 Jul 2011 12:42:27 -0400 Subject: locking: trace system call entry/exit cost --- include/litmus/rt_param.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/litmus/rt_param.h') diff --git a/include/litmus/rt_param.h b/include/litmus/rt_param.h index e6288e8807f0..221edad83d77 100644 --- a/include/litmus/rt_param.h +++ b/include/litmus/rt_param.h @@ -63,6 +63,9 @@ struct control_page { * its non-preemptive section? */ int delayed_preemption; + /* locking overhead tracing: time stamp prior to system call */ + uint64_t ts_syscall_start; /* Feather-Trace cycles */ + /* to be extended */ }; -- cgit v1.2.2