Messages in this thread | | | Date | Sun, 26 Mar 2023 21:53:22 +0200 | From | Frederic Weisbecker <> | Subject | Re: [PATCH v2 11/13] rcu-tasks: Report stalls during synchronize_srcu() in rcu_tasks_postscan() |
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Le Sat, Mar 25, 2023 at 05:33:14PM +0000, Joel Fernandes (Google) a écrit : > From: Neeraj Upadhyay <quic_neeraju@quicinc.com> > > 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. ] > > Reported-by: Mark Brown <broonie@kernel.org> > Link: https://lore.kernel.org/rcu/20230111212736.GA1062057@paulmck-ThinkPad-P17-Gen-1/ > Signed-off-by: Neeraj Upadhyay <quic_neeraju@quicinc.com> > Signed-off-by: Paul E. McKenney <paulmck@kernel.org> > Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Acked-by: Frederic Weisbecker <frederic@kernel.org>
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