Re: [PATCH v2 2/3] sched: make migrate_enable/migrate_disable inline

[Peter Zijlstra]

On Tue, Aug 19, 2025 at 02:32:14PM +0200, Peter Zijlstra wrote:
> On Tue, Aug 19, 2025 at 09:58:31AM +0800, Menglong Dong wrote:
> 
> > diff --git a/kernel/sched/core.c b/kernel/sched/core.c
> > index be00629f0ba4..00383fed9f63 100644
> > --- a/kernel/sched/core.c
> > +++ b/kernel/sched/core.c
> > @@ -119,6 +119,7 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(sched_update_nr_running_tp);
> >  EXPORT_TRACEPOINT_SYMBOL_GPL(sched_compute_energy_tp);
> >  
> >  DEFINE_PER_CPU_SHARED_ALIGNED(struct rq, runqueues);
> > +EXPORT_SYMBOL_GPL(runqueues);
> 
> Oh no, absolutely not.
> 
> You never, ever, export a variable, and certainly not this one.
> 
> How about something like so?
> 
> I tried 'clever' things with export inline, but the compiler hates me,
> so the below is the best I could make work.

extern inline, that is, obviously...