On 3/17/22 10:36, Paul E. McKenney wrote: > On Thu, Mar 17, 2022 at 04:45:11PM +0000, Hyeonggon Yoo wrote: >> On Thu, Mar 17, 2022 at 09:20:33AM -0700, Paul E. McKenney wrote: >>> On Thu, Mar 17, 2022 at 03:24:42PM +0000, Hyeonggon Yoo wrote: >>>> On Thu, Mar 17, 2022 at 07:00:00AM -0700, Paul E. McKenney wrote: >>>>> On Thu, Mar 17, 2022 at 11:32:53AM +0000, Hyeonggon Yoo wrote: >>>>>> Hello RCU folks, >>>>>> > ------------------------------------------------------------------------ > > diff --git a/arch/Kconfig b/arch/Kconfig > index 678a80713b21..66c5b5543511 100644 > --- a/arch/Kconfig > +++ b/arch/Kconfig > @@ -38,6 +38,7 @@ config KPROBES > depends on MODULES > depends on HAVE_KPROBES > select KALLSYMS > + select TASKS_RCU if PREEMPTION > help > Kprobes allows you to trap at almost any kernel address and > execute a callback function. register_kprobe() establishes > diff --git a/kernel/rcu/Kconfig b/kernel/rcu/Kconfig > index f559870fbf8b..4f665ae0cf55 100644 > --- a/kernel/rcu/Kconfig > +++ b/kernel/rcu/Kconfig > @@ -78,7 +78,8 @@ config TASKS_RCU_GENERIC > task-based RCU implementations. Not for manual selection. > > config TASKS_RCU > - def_bool PREEMPTION > + def_bool 0 preferably def_bool n but the 0 probably works... :) > + select IRQ_WORK > help > This option enables a task-based RCU implementation that uses > only voluntary context switch (not preemption!), idle, and > diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig > index 752ed89a293b..a7aaf150b704 100644 > --- a/kernel/trace/Kconfig > +++ b/kernel/trace/Kconfig > @@ -127,6 +127,7 @@ config TRACING > select BINARY_PRINTF > select EVENT_TRACING > select TRACE_CLOCK > + select TASKS_RCU if PREEMPTION > > config GENERIC_TRACER > bool -- ~Randy
