+----------------------------+----------+-----------------------------------+-------------------+--------+
| lastFile                   | lastLine | lastFn                            | lastPreeemptCount | num    |
+----------------------------+----------+-----------------------------------+-------------------+--------+
| block/blk-core.c           |     2228 | part_stat_lock                    | 101               |     63 |
| block/blk-core.c           |     2248 | part_stat_lock                    | 101               |     70 |
| include/linux/memcontrol.h |      186 | mem_cgroup_begin_update_page_stat | 1                 | 196155 |
| include/linux/memcontrol.h |      186 | mem_cgroup_begin_update_page_stat | 101               |     52 |
| kernel/notifier.c          |      197 | __atomic_notifier_call_chain      | 101               |     79 |
| kernel/sched/cpuacct.c     |      244 | cpuacct_charge                    | 101               |  11083 |
| kernel/sched/cpuacct.c     |      244 | cpuacct_charge                    | 102               |     13 |
| kernel/sched/cpuacct.c     |      244 | cpuacct_charge                    | 10001             |  82209 |
| kernel/sched/cpuacct.c     |      244 | cpuacct_charge                    | 10002             |    103 |
| kernel/sched/cpuacct.c     |      244 | cpuacct_charge                    | 10101             |     79 |
| kernel/sched/cpuacct.c     |      274 | cpuacct_account_field             | 10001             |  66460 |
| kernel/sched/cpuacct.c     |      274 | cpuacct_account_field             | 10002             |    103 |
| kernel/sched/cpuacct.c     |      274 | cpuacct_account_field             | 10101             |    130 |
| kernel/sched/fair.c        |     4528 | select_task_rq_fair               | 101               |  11450 |
| kernel/sched/fair.c        |     4528 | select_task_rq_fair               | 102               |     24 |
| mm/filemap.c               |     2026 | filemap_map_pages                 | 1                 |  20572 |
| mm/memcontrol.c            |     5593 | __mem_cgroup_threshold            | 1                 |      5 |
| mm/page-writeback.c        |     2402 | test_clear_page_writeback         | 101               |     32 |
| security/yama/yama_lsm.c   |      140 | yama_ptracer_del                  | 101               |     60 |
+----------------------------+----------+-----------------------------------+-------------------+--------+
(Query: SELECT lastFile,lastLine, lastFn, HEX(lastPreemptCount) AS lastPreeemptCount, COUNT(*) As num
FROM locks_held
WHERE lastPreemptCount&0xff > 0
GROUP BY lastFile,lastLine, lastFn,lastPreemptCount;)