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| author | Neeraj Upadhyay <[email protected]> | 2023-01-11 13:15:00 +0530 |
|---|---|---|
| committer | Joel Fernandes (Google) <[email protected]> | 2023-04-05 13:47:44 +0000 |
| commit | a4533cc0a59f0956e1b78e6013b75014b4857fce (patch) | |
| tree | 83b60ad1c8688477ab344627824310de6dd8baac /tools/perf/scripts/python/syscall-counts-by-pid.py | |
| parent | 7ea91307ad2dbdd15ed0b762a2d994f816039b9d (diff) | |
rcu-tasks: Report stalls during synchronize_srcu() in rcu_tasks_postscan()
The call to synchronize_srcu() from rcu_tasks_postscan() can be stalled
by a task getting stuck in do_exit() between that function's calls to
exit_tasks_rcu_start() and exit_tasks_rcu_finish(). To ease diagnosis
of this situation, print a stall warning message every rcu_task_stall_info
period when rcu_tasks_postscan() is stalled.
[ paulmck: Adjust to handle CONFIG_SMP=n. ]
Acked-by: Frederic Weisbecker <[email protected]>
Reviewed-by: Joel Fernandes (Google) <[email protected]>
Reported-by: Mark Brown <[email protected]>
Link: https://lore.kernel.org/rcu/20230111212736.GA1062057@paulmck-ThinkPad-P17-Gen-1/
Signed-off-by: Neeraj Upadhyay <[email protected]>
Signed-off-by: Paul E. McKenney <[email protected]>
Signed-off-by: Joel Fernandes (Google) <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/syscall-counts-by-pid.py')
0 files changed, 0 insertions, 0 deletions