Re: [RFC PATCH rcu] rcu/nocb: rcu_segcblist_set_len() can be static

From: Paul E. McKenney
Date: Thu Aug 08 2019 - 12:19:05 EST


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@xxxxxxxxx>

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);