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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2018-04-19 08:43:11 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2018-05-15 10:32:08 -0700 |
| commit | 034777d7f5c6bc5326184ffa63b7a840ef0e9759 (patch) | |
| tree | 04ea165045c633c28db81b2ff15b4765affb8efa /kernel/rcu | |
| parent | d600e06ba73034da215191a90002296a41eb0cf1 (diff) | |
| download | linux-034777d7f5c6bc5326184ffa63b7a840ef0e9759.tar.bz2 | |
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>
Diffstat (limited to 'kernel/rcu')
| -rw-r--r-- | kernel/rcu/rcutorture.c | 8 |
1 files changed, 8 insertions, 0 deletions
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++) |