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tracing: Drop lock_acquired waittime field

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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>
This commit is contained in:
Frederic Weisbecker 2010-05-08 06:16:11 +02:00
parent 90c0e5fc7b
commit 883a2a3189
2 changed files with 5 additions and 8 deletions
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2
kernel/lockdep.c
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@ -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) {