Re: linux-next: build failure after merge of the rcu tree

Paul E. McKenney
2023-05-19T02:12:58Z

On Fri, May 19, 2023 at 10:59:50AM +1000, Stephen Rothwell wrote:
> Hi all,
>
> After merging the rcu tree, today's linux-next build (x86_64 allmodconfig)
> failed like this:
>
> kernel/rcu/rcuscale.c:340:27: error: 'get_rcu_tasks_trace_gp_kthread' undeclared here (not in a function); did you mean 'show_rcu_tasks_trace_gp_kthread'?
> 340 | .rso_gp_kthread = get_rcu_tasks_trace_gp_kthread,
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> | show_rcu_tasks_trace_gp_kthread
>
> Caused by commit
>
> 9bb839a83e1b ("rcuscale: Measure grace-period kthread CPU time")
>
> CONFIG_RCU_SCALE_TEST=m
>
> I have used the rcu tree from next-20230518 for today.

Huh. Modules and #ifdefs trip me up again. Will fix, and thank you
for catching it!

Thanx, Paul