linux-kernel - Re: [PATCH] rpadlpar_io:Add MODULE_DESCRIPTION entries to kernel modules

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Date:   Mon, 28 Sep 2020 09:32:10 +1000
From:   "Oliver O'Halloran" <oohall@...il.com>
To:     Bjorn Helgaas <helgaas@...nel.org>
Cc:     Mamatha Inamdar <mamatha4@...ux.vnet.ibm.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Tyrel Datwyler <tyreld@...ux.ibm.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        linux-pci <linux-pci@...r.kernel.org>,
        linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>
Subject: Re: [PATCH] rpadlpar_io:Add MODULE_DESCRIPTION entries to kernel modules

On Sat, Sep 26, 2020 at 5:43 AM Bjorn Helgaas <helgaas@...nel.org> wrote:
>
> On Thu, Sep 24, 2020 at 04:41:39PM +1000, Oliver O'Halloran wrote:
> > On Thu, Sep 24, 2020 at 3:15 PM Mamatha Inamdar
> > <mamatha4@...ux.vnet.ibm.com> wrote:
> > >
> > > This patch adds a brief MODULE_DESCRIPTION to rpadlpar_io kernel modules
> > > (descriptions taken from Kconfig file)
> > >
> > > Signed-off-by: Mamatha Inamdar <mamatha4@...ux.vnet.ibm.com>
> > > ---
> > >  drivers/pci/hotplug/rpadlpar_core.c |    1 +
> > >  1 file changed, 1 insertion(+)
> > >
> > > diff --git a/drivers/pci/hotplug/rpadlpar_core.c b/drivers/pci/hotplug/rpadlpar_core.c
> > > index f979b70..bac65ed 100644
> > > --- a/drivers/pci/hotplug/rpadlpar_core.c
> > > +++ b/drivers/pci/hotplug/rpadlpar_core.c
> > > @@ -478,3 +478,4 @@ static void __exit rpadlpar_io_exit(void)
> > >  module_init(rpadlpar_io_init);
> > >  module_exit(rpadlpar_io_exit);
> > >  MODULE_LICENSE("GPL");
> > > +MODULE_DESCRIPTION("RPA Dynamic Logical Partitioning driver for I/O slots");
> >
> > RPA as a spec was superseded by PAPR in the early 2000s. Can we rename
> > this already?
> >
> > The only potential problem I can see is scripts doing: modprobe
> > rpadlpar_io or similar
> >
> > However, we should be able to fix that with a module alias.
>
> Is MODULE_DESCRIPTION() connected with how modprobe works?

I don't think so. The description is just there as an FYI.

> If this patch just improves documentation, without breaking users of
> modprobe, I'm fine with it, even if it would be nice to rename to PAPR
> or something in the future.

Right, the change in this patch is just a documentation fix and
shouldn't cause any problems.

I was suggesting renaming the module itself since the term "RPA" is
only used in this hotplug driver and some of the corresponding PHB add
/ remove handling in arch/powerpc/platforms/pseries/. We can make that
change in a follow up though.

> But, please use "git log --oneline drivers/pci/hotplug/rpadlpar*" and
> match the style, and also look through the rest of drivers/pci/ to see
> if we should do the same thing to any other modules.
>
> Bjorn