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| author | Paul E. McKenney <paulmck@kernel.org> | 2023-05-15 18:18:20 +0200 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2023-07-15 00:04:09 +0200 |
| commit | 9cafe974cf46425c18cf78971400ae12e416e166 (patch) | |
| tree | 09dc086a9f1ebf42bfafad53b8479c1a9ba13f04 /kernel/rcu/rcutorture.c | |
| parent | Linux 6.5-rc1 (diff) | |
| download | linux-9cafe974cf46425c18cf78971400ae12e416e166.tar.xz linux-9cafe974cf46425c18cf78971400ae12e416e166.zip | |
rcutorture: Dump grace-period state upon rtort_pipe_count incidents
The rtort_pipe_count WARN() indicates that grace periods were unable
to invoke all callbacks during a stutter_wait() interval. But it is
sometimes helpful to have a bit more information as to why. This commit
therefore invokes show_rcu_gp_kthreads() immediately before that WARN()
in order to dump out some relevant information.
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'kernel/rcu/rcutorture.c')
| -rw-r--r-- | kernel/rcu/rcutorture.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c index 147551c23baf..d291a1438c30 100644 --- a/kernel/rcu/rcutorture.c +++ b/kernel/rcu/rcutorture.c @@ -1581,6 +1581,7 @@ rcu_torture_writer(void *arg) rcu_access_pointer(rcu_torture_current) != &rcu_tortures[i]) { tracing_off(); + show_rcu_gp_kthreads(); WARN(1, "%s: rtort_pipe_count: %d\n", __func__, rcu_tortures[i].rtort_pipe_count); rcu_ftrace_dump(DUMP_ALL); } |