diff options
| author | Paul E. McKenney <paulmck@kernel.org> | 2019-08-14 12:02:40 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2019-10-05 11:50:03 -0700 |
| commit | 8b5ddf8b99dc42241d1d413c6685bce18275c40e (patch) | |
| tree | 4ef1c7d7550c4d138cf223624aec068cc66f0cb4 /kernel/rcu | |
| parent | b3ffb206ddd7f07d83bafd10e1b403df57055af4 (diff) | |
rcutorture: Separate warnings for each failure type
Currently, each of six different types of failure triggers a
single WARN_ON_ONCE(), and it is then necessary to stare at the
rcu_torture_stats(), Reader Pipe, and Reader Batch lines looking for
inappropriately non-zero values. This can be annoying and error-prone,
so this commit provides a separate WARN_ON_ONCE() for each of the
six error conditions and adds short comments to each to ease error
identification.
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'kernel/rcu')
| -rw-r--r-- | kernel/rcu/rcutorture.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c index 3c9feca1eab1..5ac467293803 100644 --- a/kernel/rcu/rcutorture.c +++ b/kernel/rcu/rcutorture.c @@ -1442,15 +1442,18 @@ rcu_torture_stats_print(void) n_rcu_torture_barrier_error); pr_alert("%s%s ", torture_type, TORTURE_FLAG); - if (atomic_read(&n_rcu_torture_mberror) != 0 || - n_rcu_torture_barrier_error != 0 || - n_rcu_torture_boost_ktrerror != 0 || - n_rcu_torture_boost_rterror != 0 || - n_rcu_torture_boost_failure != 0 || + if (atomic_read(&n_rcu_torture_mberror) || + n_rcu_torture_barrier_error || n_rcu_torture_boost_ktrerror || + n_rcu_torture_boost_rterror || n_rcu_torture_boost_failure || i > 1) { pr_cont("%s", "!!! "); atomic_inc(&n_rcu_torture_error); - WARN_ON_ONCE(1); + WARN_ON_ONCE(atomic_read(&n_rcu_torture_mberror)); + WARN_ON_ONCE(n_rcu_torture_barrier_error); // rcu_barrier() + WARN_ON_ONCE(n_rcu_torture_boost_ktrerror); // no boost kthread + WARN_ON_ONCE(n_rcu_torture_boost_rterror); // can't set RT prio + WARN_ON_ONCE(n_rcu_torture_boost_failure); // RCU boost failed + WARN_ON_ONCE(i > 1); // Too-short grace period } pr_cont("Reader Pipe: "); for (i = 0; i < RCU_TORTURE_PIPE_LEN + 1; i++) |