For preemptible RCU, this commit adds an indication for each reader segments to whether the rcu_torture_reader() task was on the ->blkd_tasks lists, though only in kernels built with CONFIG_RCU_TORTURE_TEST_LOG_CPU=y.
Signed-off-by: Paul E. McKenney <[email protected]> --- kernel/rcu/rcutorture.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c index ab354bb7f1b68..41b661bf000a7 100644 --- a/kernel/rcu/rcutorture.c +++ b/kernel/rcu/rcutorture.c @@ -464,10 +464,8 @@ rcu_read_delay(struct torture_random_state *rrsp, struct rt_read_seg *rtrsp) rtrsp->rt_delay_us = shortdelay_us; } if (!preempt_count() && - !(torture_random(rrsp) % (nrealreaders * 500))) { + !(torture_random(rrsp) % (nrealreaders * 500))) torture_preempt_schedule(); /* QS only if preemptible. */ - rtrsp->rt_preempted = true; - } } static void rcu_torture_read_unlock(int idx) @@ -1961,8 +1959,11 @@ static void rcutorture_one_extend(int *readstate, int newstate, bool insoftirq, if (IS_ENABLED(CONFIG_RCU_TORTURE_TEST_LOG_CPU)) { int cpu = raw_smp_processor_id(); rtrsp->rt_cpu = cpu; - if (!first) + if (!first) { rtrsp[-1].rt_end_cpu = cpu; + if (cur_ops->reader_blocked) + rtrsp[-1].rt_preempted = cur_ops->reader_blocked(); + } } /* -- 2.40.1
