Re: [PATCH rcu 05/12] rcu: Forbid RCU_STRICT_GRACE_PERIOD in TINY_RCU kernels

Neeraj Upadhyay
2022-06-21T06:02:40Z

On 6/21/2022 3:50 AM, Paul E. McKenney wrote:
> The RCU_STRICT_GRACE_PERIOD Kconfig option does nothing in kernels
> built with CONFIG_TINY_RCU=y, so this commit adjusts the dependencies
> to disallow this combination.
>
> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
> ---

Reviewed-by: Neeraj Upadhyay <quic_neeraju@quicinc.com>

Thanks
Neeraj

> kernel/rcu/Kconfig.debug | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/kernel/rcu/Kconfig.debug b/kernel/rcu/Kconfig.debug
> index 9b64e55d4f615..4da05beb13d79 100644
> --- a/kernel/rcu/Kconfig.debug
> +++ b/kernel/rcu/Kconfig.debug
> @@ -121,7 +121,7 @@ config RCU_EQS_DEBUG
>
> config RCU_STRICT_GRACE_PERIOD
> bool "Provide debug RCU implementation with short grace periods"
> - depends on DEBUG_KERNEL && RCU_EXPERT && NR_CPUS <= 4
> + depends on DEBUG_KERNEL && RCU_EXPERT && NR_CPUS <= 4 && !TINY_RCU
> default n
> select PREEMPT_COUNT if PREEMPT=n
> help