diff options
| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2017-11-27 15:13:56 -0800 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2018-06-26 12:25:55 -0700 |
| commit | 4bc8d55574dd316e43975651b9259c5c18d741fc (patch) | |
| tree | b7e171ee4ab41077338234b0f4a8ca97fff4f324 /kernel/rcu/tree.h | |
| parent | ce397d215ccd07b8ae3f71db689aedb85d56ab40 (diff) | |
rcu: Add debugging info to assertion
The WARN_ON_ONCE(rcu_preempt_blocked_readers_cgp()) in
rcu_gp_cleanup() triggers (inexplicably, of course) every so often.
This commit therefore extracts more information.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel/rcu/tree.h')
| -rw-r--r-- | kernel/rcu/tree.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/rcu/tree.h b/kernel/rcu/tree.h index 78e051dffc5b..7365ac53fdd9 100644 --- a/kernel/rcu/tree.h +++ b/kernel/rcu/tree.h @@ -87,6 +87,7 @@ struct rcu_node { unsigned long completed; /* Last GP completed for this node. */ /* This will either be equal to or one */ /* behind the root rcu_node's gpnum. */ + unsigned long completedqs; /* All QSes done for this node. */ unsigned long qsmask; /* CPUs or groups that need to switch in */ /* order for current grace period to proceed.*/ /* In leaf rcu_node, each bit corresponds to */ @@ -453,6 +454,7 @@ static void rcu_preempt_check_blocked_tasks(struct rcu_node *rnp); static void rcu_preempt_check_callbacks(void); void call_rcu(struct rcu_head *head, rcu_callback_t func); static void __init __rcu_init_preempt(void); +static void dump_blkd_tasks(struct rcu_node *rnp, int ncheck); static void rcu_initiate_boost(struct rcu_node *rnp, unsigned long flags); static void rcu_preempt_boost_start_gp(struct rcu_node *rnp); static void invoke_rcu_callbacks_kthread(void); |