Atomic SRCU does not use the srcu_node combining tree. Exclude it from the SRCU_SIZING_IS_TORTURE() transition in srcu_torture_stats_print(), and warn if such a transition is requested.
Signed-off-by: Kunwu Chan <[email protected]> --- Changes: -add warn on an invalid atomic SRCU sizing configuration. -v1: https://lore.kernel.org/rcu/[email protected]/ --- kernel/rcu/srcutree.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/kernel/rcu/srcutree.c b/kernel/rcu/srcutree.c index 68441c32cebf..60c102a4d057 100644 --- a/kernel/rcu/srcutree.c +++ b/kernel/rcu/srcutree.c @@ -2422,8 +2422,10 @@ void srcu_torture_stats_print(struct srcu_struct *ssp, char *tt, char *tf) } pr_cont(" T(%ld,%ld)\n", s0, s1); } - if (SRCU_SIZING_IS_TORTURE()) - srcu_transition_to_big(ssp); + if (SRCU_SIZING_IS_TORTURE()) { + if (!WARN_ON_ONCE(ssp->srcu_reader_flavor == SRCU_READ_FLAVOR_ATOMIC)) + srcu_transition_to_big(ssp); + } } EXPORT_SYMBOL_GPL(srcu_torture_stats_print); -- 2.43.0
