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Message-ID: <32ce954a-7afd-fbde-ace9-37979539b299@quicinc.com>
Date:   Tue, 21 Jun 2022 11:32:28 +0530
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Subject: Re: [PATCH rcu 05/12] rcu: Forbid RCU_STRICT_GRACE_PERIOD in TINY_RCU
 kernels
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To:     "Paul E. McKenney" <paulmck@kernel.org>, <rcu@vger.kernel.org>
CC:     <linux-kernel@vger.kernel.org>, <kernel-team@fb.com>,
        <rostedt@goodmis.org>
References: <20220620222022.GA3839466@paulmck-ThinkPad-P17-Gen-1>
 <20220620222032.3839547-5-paulmck@kernel.org>
From:   Neeraj Upadhyay <quic_neeraju@quicinc.com>
In-Reply-To: <20220620222032.3839547-5-paulmck@kernel.org>
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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