From: Paul E. McKenney Date: Mon, 10 Apr 2017 17:27:19 +0000 (-0700) Subject: rcutorture: Add three-level tree test for Tree SRCU X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=8d6dd656a1c5683534ee174f06c9b1d736ebea3c;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git rcutorture: Add three-level tree test for Tree SRCU This commit adds a test for a three-level srcu_node tree for Tree SRCU in the existing SRCU-P scenario. This requires enabling CONFIG_RCU_EXPERT, so the CONFIG_RCU_EXPERT=n scenario is now SRCU-N. The reason for using SRCU-P for the tall tree is that preemption raises the possibility of locating more bugs than does the non-preemptive SRCU-N. Signed-off-by: Paul E. McKenney --- diff --git a/tools/testing/selftests/rcutorture/configs/rcu/SRCU-N b/tools/testing/selftests/rcutorture/configs/rcu/SRCU-N index 1a087c3c8bb8..2da8b49589a0 100644 --- a/tools/testing/selftests/rcutorture/configs/rcu/SRCU-N +++ b/tools/testing/selftests/rcutorture/configs/rcu/SRCU-N @@ -5,4 +5,4 @@ CONFIG_HOTPLUG_CPU=y CONFIG_PREEMPT_NONE=y CONFIG_PREEMPT_VOLUNTARY=n CONFIG_PREEMPT=n -CONFIG_RCU_EXPERT=y +#CHECK#CONFIG_RCU_EXPERT=n diff --git a/tools/testing/selftests/rcutorture/configs/rcu/SRCU-P b/tools/testing/selftests/rcutorture/configs/rcu/SRCU-P index 8205b481d9ed..ab7ccd38232b 100644 --- a/tools/testing/selftests/rcutorture/configs/rcu/SRCU-P +++ b/tools/testing/selftests/rcutorture/configs/rcu/SRCU-P @@ -2,9 +2,11 @@ CONFIG_RCU_TRACE=n CONFIG_SMP=y CONFIG_NR_CPUS=8 CONFIG_HOTPLUG_CPU=y +CONFIG_RCU_EXPERT=y +CONFIG_RCU_FANOUT=2 +CONFIG_RCU_FANOUT_LEAF=2 CONFIG_PREEMPT_NONE=n CONFIG_PREEMPT_VOLUNTARY=n CONFIG_PREEMPT=y -#CHECK#CONFIG_RCU_EXPERT=n CONFIG_DEBUG_LOCK_ALLOC=y CONFIG_PROVE_LOCKING=y