On Wed, Oct 21, 2020 at 03:08:09PM -0400, Joel Fernandes (Google) wrote:
> bool rcu_segcblist_accelerate(struct rcu_segcblist *rsclp, unsigned long seq)
> {
> - int i;
> + int i, j;
>
> WARN_ON_ONCE(!rcu_segcblist_is_enabled(rsclp));
> if (rcu_segcblist_restempty(rsclp, RCU_DONE_TAIL))
> @@ -487,6 +508,10 @@ bool rcu_segcblist_accelerate(struct rcu_segcblist
> *rsclp, unsigned long seq)
> if (rcu_segcblist_restempty(rsclp, i) || ++i >= RCU_NEXT_TAIL)
> return false;
>
> + /* Accounting: everything below i is about to get merged into i. */
> + for (j = i + 1; j <= RCU_NEXT_TAIL; j++)
> + rcu_segcblist_move_seglen(rsclp, j, i);
> +
Can you perhaps reuse the below loop to move the seglen?
Thanks.
> /*
> * Merge all later callbacks, including newly arrived callbacks,
> * into the segment located by the for-loop above. Assign "seq"
