tracing: Drop lock_acquired waittime field

Drop the waittime field from the lock_acquired event, we can
calculate it by substracting the lock_acquired event timestamp
with the matching lock_acquire one.

It is not needed and takes useless space in the traces.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
Cc: Steven Rostedt <rostedt@goodmis.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/kernel/lockdep.c b/kernel/lockdep.c
index 2594e1ce41cb..31e22e742368 100644
--- a/kernel/lockdep.c
+++ b/kernel/lockdep.c
@@ -3380,7 +3380,7 @@ found_it:
                 hlock->holdtime_stamp = now;
         }
 
-        trace_lock_acquired(lock, ip, waittime);
+        trace_lock_acquired(lock, ip);
 
         stats = get_lock_stats(hlock_class(hlock));
         if (waittime) {