Messages in this thread Patch in this message | | | From | "Paul E. McKenney" <> | Subject | [PATCH tip/core/rcu 3/6] rcutorture: Print end-of-test state | Date | Sun, 22 Apr 2018 20:14:02 -0700 |
| |
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> --- kernel/rcu/rcutorture.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c index 680c96d8c00f..fd86965b33a7 100644 --- a/kernel/rcu/rcutorture.c +++ b/kernel/rcu/rcutorture.c @@ -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++) -- 2.5.2
| |