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rcutorture: Print end-of-test state 

This commit adds end-of-test state printout to help check whether RCU
shut down nicely.  Note that this printout only helps for flavors of
RCU that are not used much by the kernel.  In particular, for normal
RCU having a grace period in progress is expected behavior.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Tested-by: Nicholas Piggin <npiggin@gmail.com>
This commit is contained in:
Paul E. McKenney 2018-04-19 08:43:11 -07:00
parent d600e06ba7
commit 034777d7f5
1 changed files with 8 additions and 0 deletions
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8
kernel/rcu/rcutorture.c
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@ -1609,6 +1609,9 @@ static enum cpuhp_state rcutor_hp;
static void
rcu_torture_cleanup(void)
{
int flags = 0;
unsigned long gpnum = 0;
unsigned long completed = 0;
int i;
rcutorture_record_test_transition();
@ -1639,6 +1642,11 @@ rcu_torture_cleanup(void)
fakewriter_tasks = NULL;
}
rcutorture_get_gp_data(cur_ops->ttype, &flags, &gpnum, &completed);
srcutorture_get_gp_data(cur_ops->ttype, srcu_ctlp,
&flags, &gpnum, &completed);
pr_alert("%s: End-test grace-period state: g%lu c%lu f%#x\n",
cur_ops->name, gpnum, completed, flags);
torture_stop_kthread(rcu_torture_stats, stats_task);
torture_stop_kthread(rcu_torture_fqs, fqs_task);
for (i = 0; i < ncbflooders; i++)