| From | "Paul E. McKenney" <> | Subject | [PATCH tip/core/rcu 19/22] EXP: rcu: Add debugging info to other assertion | Date | Sun, 22 Apr 2018 19:32:24 -0700 |
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Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> --- kernel/rcu/tree_plugin.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h index cdfd39f58368..0dbf813f371b 100644 --- a/kernel/rcu/tree_plugin.h +++ b/kernel/rcu/tree_plugin.h @@ -697,7 +697,8 @@ static void rcu_preempt_check_blocked_tasks(struct rcu_node *rnp) struct task_struct *t; RCU_LOCKDEP_WARN(preemptible(), "rcu_preempt_check_blocked_tasks() invoked with preemption enabled!!!\n"); - WARN_ON_ONCE(rcu_preempt_blocked_readers_cgp(rnp)); + if (WARN_ON_ONCE(rcu_preempt_blocked_readers_cgp(rnp))) + dump_blkd_tasks(rnp, 10); if (rcu_preempt_has_tasks(rnp)) { rnp->gp_tasks = rnp->blkd_tasks.next; t = container_of(rnp->gp_tasks, struct task_struct, -- 2.5.2
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