Like perf lock report, it can report lock contention stat of each task.

  $ perf lock contention -t
   contended   total wait     max wait     avg wait          pid   comm

           5    945.20 us    902.08 us    189.04 us       316167   EventManager_De
          33     98.17 us      6.78 us      2.97 us       766063   kworker/0:1-get
           7     92.47 us     61.26 us     13.21 us       316170   EventManager_De
          14     76.31 us     12.87 us      5.45 us        12949   timedcall
          24     76.15 us     12.27 us      3.17 us       767992   sched-pipe
          15     75.62 us     11.93 us      5.04 us        15127   switchto-defaul
          24     71.84 us      5.59 us      2.99 us       629168   kworker/u513:2-
          17     67.41 us      7.94 us      3.96 us        13504   coroner-
           1     59.56 us     59.56 us     59.56 us       316165   EventManager_De
          14     56.21 us      6.89 us      4.01 us            0   swapper
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Waiman Long <longman@redhat.com>
Cc: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20220725183124.368304-6-namhyung@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>