locking: trace system call entry/exit cost

1 files changed, 16 insertions, 0 deletions

diff --git a/litmus/locking.c b/litmus/locking.c
index 728b56835cf7..cfbc1ba59217 100644
--- a/litmus/locking.c
+++ b/litmus/locking.c
@@ -1,3 +1,5 @@
+#include <linux/sched.h>
+#include <litmus/litmus.h>
 #include <litmus/fdso.h>
 
 #ifdef CONFIG_LITMUS_LOCKING
@@ -69,6 +71,11 @@ asmlinkage long sys_litmus_lock(int lock_od)
         struct od_table_entry* entry;
         struct litmus_lock* l;
 
+        if (has_control_page(current))
+                TS_SYSCALL_IN_START(&get_control_page(current)->ts_syscall_start);
+
+        TS_SYSCALL_IN_END;
+
         TS_LOCK_START;
 
         entry = get_entry_for_od(lock_od);
@@ -82,6 +89,8 @@ asmlinkage long sys_litmus_lock(int lock_od)
          * this into account when computing overheads. */
         TS_UNLOCK_END;
 
+        TS_SYSCALL_OUT_START;
+
         return err;
 }
 
@@ -91,6 +100,11 @@ asmlinkage long sys_litmus_unlock(int lock_od)
         struct od_table_entry* entry;
         struct litmus_lock* l;
 
+        if (has_control_page(current))
+                TS_SYSCALL_IN_START(&get_control_page(current)->ts_syscall_start);
+
+        TS_SYSCALL_IN_END;
+
         TS_UNLOCK_START;
 
         entry = get_entry_for_od(lock_od);
@@ -104,6 +118,8 @@ asmlinkage long sys_litmus_unlock(int lock_od)
          * account when computing overheads. */
         TS_UNLOCK_END;
 
+        TS_SYSCALL_OUT_START;
+
         return err;
 }