linux-kernel - Re: [PATCH RFC tip/core/rcu 3/9] rcu_sync: Add CONFIG_PROVE

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Date:	Mon, 7 Sep 2015 11:02:12 +0200
From:	Daniel Wagner <wagi@...om.org>
To:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	linux-kernel@...r.kernel.org
Cc:	mingo@...nel.org, jiangshanlai@...il.com, dipankar@...ibm.com,
	akpm@...ux-foundation.org, mathieu.desnoyers@...icios.com,
	josh@...htriplett.org, tglx@...utronix.de, peterz@...radead.org,
	rostedt@...dmis.org, dhowells@...hat.com, edumazet@...gle.com,
	dvhart@...ux.intel.com, fweisbec@...il.com, oleg@...hat.com,
	bobby.prani@...il.com
Subject: Re: [PATCH RFC tip/core/rcu 3/9] rcu_sync: Add CONFIG_PROVE_RCU
 checks

On 08/29/2015 05:35 AM, Paul E. McKenney wrote:
> +extern bool __rcu_sync_is_idle(struct rcu_sync *);
> +
>  /**
>   * rcu_sync_is_idle() - Are readers permitted to use their fastpaths?
>   * @rsp: Pointer to rcu_sync structure to use for synchronization
> @@ -50,7 +52,11 @@ struct rcu_sync {
>   */
>  static inline bool rcu_sync_is_idle(struct rcu_sync *rsp)
>  {
> +#ifdef CONFIG_PROVE_RCU
> +	return __rcu_sync_is_idle(rss);

s/rss/rsp?

> +#else
>  	return !rsp->gp_state; /* GP_IDLE */
> +#endif
>  }
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