linux-kernel - Re: [net-next PATCH 2/3] octeontx2-af: Add devlink health reporters for NPA

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Date:   Tue, 3 Nov 2020 12:56:25 -0500
From:   Willem de Bruijn <willemdebruijn.kernel@...il.com>
To:     George Cherian <gcherian@...vell.com>
Cc:     Network Development <netdev@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Jakub Kicinski <kuba@...nel.org>,
        David Miller <davem@...emloft.net>,
        Sunil Kovvuri Goutham <sgoutham@...vell.com>,
        Linu Cherian <lcherian@...vell.com>,
        Geethasowjanya Akula <gakula@...vell.com>,
        "masahiroy@...nel.org" <masahiroy@...nel.org>
Subject: Re: [net-next PATCH 2/3] octeontx2-af: Add devlink health reporters
 for NPA

On Tue, Nov 3, 2020 at 12:43 PM George Cherian <gcherian@...vell.com> wrote:
>
> Hi Willem,
>
>
> > -----Original Message-----
> > From: Willem de Bruijn <willemdebruijn.kernel@...il.com>
> > Sent: Tuesday, November 3, 2020 7:21 PM
> > To: George Cherian <gcherian@...vell.com>
> > Cc: Network Development <netdev@...r.kernel.org>; linux-kernel <linux-
> > kernel@...r.kernel.org>; Jakub Kicinski <kuba@...nel.org>; David Miller
> > <davem@...emloft.net>; Sunil Kovvuri Goutham
> > <sgoutham@...vell.com>; Linu Cherian <lcherian@...vell.com>;
> > Geethasowjanya Akula <gakula@...vell.com>; masahiroy@...nel.org
> > Subject: [EXT] Re: [net-next PATCH 2/3] octeontx2-af: Add devlink health
> > reporters for NPA
> >
> > External Email
> >
> > ----------------------------------------------------------------------
> > > > >  static int rvu_devlink_info_get(struct devlink *devlink, struct
> > > > devlink_info_req *req,
> > > > >                                 struct netlink_ext_ack *extack)  { @@
> > > > > -53,7 +483,8 @@ int rvu_register_dl(struct rvu *rvu)
> > > > >         rvu_dl->dl = dl;
> > > > >         rvu_dl->rvu = rvu;
> > > > >         rvu->rvu_dl = rvu_dl;
> > > > > -       return 0;
> > > > > +
> > > > > +       return rvu_health_reporters_create(rvu);
> > > >
> > > > when would this be called with rvu->rvu_dl == NULL?
> > >
> > > During initialization.
> >
> > This is the only caller, and it is only reached if rvu_dl is non-zero.
>
> Did you mean to ask, where is it de-initialized?
> If so, it should be done in rvu_unregister_dl() after freeing rvu_dl.

No, I meant that rvu_health_reporters_create does not need an
!rvu->rvu_dl precondition test, as the only callers calls with with a
non-zero rvu_dl.