Hello! This series refactors the NEED_TASKS_RCU option so that the conditional processing is in one place in kernel/rcu/Kconfig. This makes it easier to make sure that Tasks RCU is enabled in PREEMPT_AUTO kernels, given that such kernels are preemptible, even if only lazily so. After all, it takes only one lazy preemption from a trampoline to significantly degrade your kernel's actuarial statistics. 1. Create NEED_TASKS_RCU to factor out enablement logic. 2. Select new NEED_TASKS_RCU Kconfig option. 3. Select new NEED_TASKS_RCU Kconfig option. 4. Select new NEED_TASKS_RCU Kconfig option. Thanx, Paul ------------------------------------------------------------------------ arch/Kconfig | 4 ++-- kernel/bpf/Kconfig | 2 +- kernel/rcu/Kconfig | 6 +++++- kernel/trace/Kconfig | 4 ++-- 4 files changed, 10 insertions(+), 6 deletions(-)
