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Commit 24a6cff2 authored by Paul E. McKenney's avatar Paul E. McKenney
Browse files

rcu: Make expedited RCU CPU stall warnings respond to controls 



The expedited RCU CPU stall warnings currently responds to neither the
panic_on_rcu_stall sysctl setting nor the rcupdate.rcu_cpu_stall_suppress
kernel boot parameter.  This commit therefore updates the expedited code
to respond to these two controls.

Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
parent 908d2c1f

kernel/rcu/tree_exp.h

+3 −0
Original line number Diff line number Diff line
@@ -428,6 +428,9 @@ static void synchronize_sched_expedited_wait(struct rcu_state *rsp) 
		if (ret > 0 || sync_rcu_preempt_exp_done(rnp_root))

			return;

		WARN_ON(ret < 0);  /* workqueues should not be signaled. */

		if (rcu_cpu_stall_suppress)

			continue;

		panic_on_rcu_stall();

		pr_err("INFO: %s detected expedited stalls on CPUs/tasks: {",

		       rsp->name);

		ndetected = 0;