Re: [PATCH 02/12] cgroup: rstat: Make cgroup_rstat_cpu_lock name readable

[Namhyung Kim]

Hi Tejun,

On Tue, Feb 8, 2022 at 10:46 AM Tejun Heo <tj@xxxxxxxxxx> wrote:
>
> On Tue, Feb 08, 2022 at 10:41:58AM -0800, Namhyung Kim wrote:
> > The raw_spin_lock_init() uses the argument to name its lockdep map.
> > But passing per_cpu_ptr() macro directly makes it a very very long
> > name as it expanded like below:
> >
> >   ({ do { const void *__vpp_verify = (typeof((&cgroup_rstat_cpu_lock) ...
> >
> > Let's fix it by passing a local variable instead.  With this change,
> > the name now looks like:
> >
> >   cgrp_rstat_cpu_lock
> >
> > Cc: Tejun Heo <tj@xxxxxxxxxx>
> > Cc: Zefan Li <lizefan.x@xxxxxxxxxxxxx>
> > Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
> > Cc: cgroups@xxxxxxxxxxxxxxx
> > Signed-off-by: Namhyung Kim <namhyung@xxxxxxxxxx>
>
> Acked-by: Tejun Heo <tj@xxxxxxxxxx>

Thanks!

>
> but maybe add a comment explaining what's going on?

Sure, I'll add the comment.