Commit 81e59494 authored by Paul E. McKenney's avatar Paul E. McKenney

rcu: Tone down debugging during boot-up and shutdown.

In some situations, randomly delaying RCU grace-period initialization
can cause more trouble than help.  This commit therefore restricts this
type of RCU self-torture to runtime, giving it a rest during boot and
shutdown.
Reported-by: default avatarSasha Levin <sasha.levin@oracle.com>
Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
parent 6231069b
......@@ -1319,7 +1319,8 @@ static int rcu_gp_init(struct rcu_state *rsp)
rnp->grphi, rnp->qsmask);
raw_spin_unlock_irq(&rnp->lock);
#ifdef CONFIG_PROVE_RCU_DELAY
if ((random32() % (rcu_num_nodes * 8)) == 0)
if ((random32() % (rcu_num_nodes * 8)) == 0 &&
system_state == SYSTEM_RUNNING)
schedule_timeout_uninterruptible(2);
#endif /* #ifdef CONFIG_PROVE_RCU_DELAY */
cond_resched();
......
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