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rcu: Enable stall warnings for synchronize_rcu_expedited()
author
Paul E. McKenney
<paulmck@linux.vnet.ibm.com>
Tue, 18 Aug 2015 19:17:29 +0000
(12:17 -0700)
committer
Paul E. McKenney
<paulmck@linux.vnet.ibm.com>
Wed, 7 Oct 2015 23:02:50 +0000
(16:02 -0700)
This commit redirects synchronize_rcu_expedited()'s wait to
synchronize_sched_expedited_wait(), thus enabling RCU CPU
stall warnings.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
kernel/rcu/tree_plugin.h
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diff --git
a/kernel/rcu/tree_plugin.h
b/kernel/rcu/tree_plugin.h
index
7b61cec
..
ffeb99e
100644
(file)
--- a/
kernel/rcu/tree_plugin.h
+++ b/
kernel/rcu/tree_plugin.h
@@
-761,8
+761,7
@@
void synchronize_rcu_expedited(void)
/* Wait for snapshotted ->blkd_tasks lists to drain. */
rnp = rcu_get_root(rsp);
- wait_event(rsp->expedited_wq,
- sync_rcu_preempt_exp_done(rnp));
+ synchronize_sched_expedited_wait(rsp);
/* Clean up and exit. */
rcu_exp_gp_seq_end(rsp);