diff options
| author | Paul E. McKenney <paulmck@kernel.org> | 2021-12-07 02:12:14 +0300 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2022-02-02 04:24:38 +0300 |
| commit | 6f81bd6a4e305d15d9c2a6a350e2876a7a814d7e (patch) | |
| tree | db4957b30545ff3eeb24345f228f2da6129fde7c /kernel/rcu | |
| parent | da123016ca8cb5697366c0b2dd55059b976e67e4 (diff) | |
rcutorture: Print message before invoking ->cb_barrier()
The various ->cb_barrier() functions, for example, rcu_barrier(),
sometimes cause rcutorture hangs. But currently, the last console
message is the unenlightening "Stopping rcu_torture_stats". This commit
therefore prints a message of the form "rcu_torture_cleanup: Invoking
rcu_barrier+0x0/0x1e0()" to help point people in the right direction.
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'kernel/rcu')
| -rw-r--r-- | kernel/rcu/rcutorture.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c index 422f7e4cc08d..00400aef5818 100644 --- a/kernel/rcu/rcutorture.c +++ b/kernel/rcu/rcutorture.c @@ -2905,8 +2905,10 @@ rcu_torture_cleanup(void) int i; if (torture_cleanup_begin()) { - if (cur_ops->cb_barrier != NULL) + if (cur_ops->cb_barrier != NULL) { + pr_info("%s: Invoking %pS().\n", __func__, cur_ops->cb_barrier); cur_ops->cb_barrier(); + } return; } if (!cur_ops) { @@ -2961,8 +2963,10 @@ rcu_torture_cleanup(void) * Wait for all RCU callbacks to fire, then do torture-type-specific * cleanup operations. */ - if (cur_ops->cb_barrier != NULL) + if (cur_ops->cb_barrier != NULL) { + pr_info("%s: Invoking %pS().\n", __func__, cur_ops->cb_barrier); cur_ops->cb_barrier(); + } if (cur_ops->cleanup != NULL) cur_ops->cleanup(); |