linux-kernel - Re: [RFC PATCH rcu] rcu/nocb: rcu_segcblist_set

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Date:   Thu, 8 Aug 2019 09:18:58 -0700
From:   "Paul E. McKenney" <paulmck@...ux.ibm.com>
To:     kbuild test robot <lkp@...el.com>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH rcu] rcu/nocb: rcu_segcblist_set_len() can be static

On Thu, Aug 08, 2019 at 10:32:58AM +0800, kbuild test robot wrote:
> 
> Fixes: ab2ef5c7b4d1 ("rcu/nocb: Atomic ->len field in rcu_segcblist structure")
> Signed-off-by: kbuild test robot <lkp@...el.com>

Good catch!  Queued with updated commit log, thank you!

							Thanx, Paul

> ---
>  rcu_segcblist.c |    6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/kernel/rcu/rcu_segcblist.c b/kernel/rcu/rcu_segcblist.c
> index ff431cc830378..84bbffaaede83 100644
> --- a/kernel/rcu/rcu_segcblist.c
> +++ b/kernel/rcu/rcu_segcblist.c
> @@ -58,7 +58,7 @@ struct rcu_head *rcu_cblist_dequeue(struct rcu_cblist *rclp)
>  }
>  
>  /* Set the length of an rcu_segcblist structure. */
> -void rcu_segcblist_set_len(struct rcu_segcblist *rsclp, long v)
> +static void rcu_segcblist_set_len(struct rcu_segcblist *rsclp, long v)
>  {
>  #ifdef CONFIG_RCU_NOCB_CPU
>  	atomic_long_set(&rsclp->len, v);
> @@ -74,7 +74,7 @@ void rcu_segcblist_set_len(struct rcu_segcblist *rsclp, long v)
>   * This increase is fully ordered with respect to the callers accesses
>   * both before and after.
>   */
> -void rcu_segcblist_add_len(struct rcu_segcblist *rsclp, long v)
> +static void rcu_segcblist_add_len(struct rcu_segcblist *rsclp, long v)
>  {
>  #ifdef CONFIG_RCU_NOCB_CPU
>  	smp_mb__before_atomic(); /* Up to the caller! */
> @@ -104,7 +104,7 @@ void rcu_segcblist_inc_len(struct rcu_segcblist *rsclp)
>   * with the actual number of callbacks on the structure.  This exchange is
>   * fully ordered with respect to the callers accesses both before and after.
>   */
> -long rcu_segcblist_xchg_len(struct rcu_segcblist *rsclp, long v)
> +static long rcu_segcblist_xchg_len(struct rcu_segcblist *rsclp, long v)
>  {
>  #ifdef CONFIG_RCU_NOCB_CPU
>  	return atomic_long_xchg(&rsclp->len, v);