linux-kernel - Re: [PATCH] ACPI / NUMA: Add stub function for pxm_to

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Date:   Wed, 30 Sep 2020 09:42:41 +0100
From:   Jonathan Cameron <Jonathan.Cameron@...wei.com>
To:     Randy Dunlap <rdunlap@...radead.org>
CC:     Nathan Chancellor <natechancellor@...il.com>,
        Robert Moore <robert.moore@...el.com>,
        Erik Kaneda <erik.kaneda@...el.com>,
        "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        Len Brown <lenb@...nel.org>, <linux-acpi@...r.kernel.org>,
        <devel@...ica.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ACPI / NUMA: Add stub function for pxm_to_node

On Tue, 29 Sep 2020 13:13:24 -0700
Randy Dunlap <rdunlap@...radead.org> wrote:

> On 9/28/20 12:45 PM, Nathan Chancellor wrote:
> > After commit 01feba590cd6 ("ACPI: Do not create new NUMA domains from
> > ACPI static tables that are not SRAT"):
> > 
> > $ scripts/config --file arch/x86/configs/x86_64_defconfig -d NUMA -e ACPI_NFIT
> > 
> > $ make -skj"$(nproc)" distclean defconfig drivers/acpi/nfit/
> > drivers/acpi/nfit/core.c: In function ‘acpi_nfit_register_region’:
> > drivers/acpi/nfit/core.c:3010:27: error: implicit declaration of
> > function ‘pxm_to_node’; did you mean ‘xa_to_node’?
> > [-Werror=implicit-function-declaration]
> >  3010 |   ndr_desc->target_node = pxm_to_node(spa->proximity_domain);
> >       |                           ^~~~~~~~~~~
> >       |                           xa_to_node
> > cc1: some warnings being treated as errors
> > ...
> > 
> > Add a stub function like acpi_map_pxm_to_node had so that the build
> > continues to work.
> > 
> > Fixes: 01feba590cd6 ("ACPI: Do not create new NUMA domains from ACPI static tables that are not SRAT")
> > Signed-off-by: Nathan Chancellor <natechancellor@...il.com>
> > ---
> > 
> > I am not sure if this is the right place or value for this. It looks
> > like there is going to be another stub function added here, which is
> > going through -mm:
> > 
> > https://lkml.kernel.org/r/159643094925.4062302.14979872973043772305.stgit@dwillia2-desk3.amr.corp.intel.com
> > 
> >  include/acpi/acpi_numa.h | 5 +++++
> >  1 file changed, 5 insertions(+)
> > 
> > diff --git a/include/acpi/acpi_numa.h b/include/acpi/acpi_numa.h
> > index fdebcfc6c8df..09eb3bc20ff5 100644
> > --- a/include/acpi/acpi_numa.h
> > +++ b/include/acpi/acpi_numa.h
> > @@ -22,5 +22,10 @@ extern int acpi_numa __initdata;
> >  extern void bad_srat(void);
> >  extern int srat_disabled(void);
> >  
> > +#else				/* CONFIG_ACPI_NUMA */
> > +static inline int pxm_to_node(int pxm)
> > +{
> > +	return 0;
> > +}
> >  #endif				/* CONFIG_ACPI_NUMA */
> >  #endif				/* __ACP_NUMA_H */
> > 
> > base-commit: eb6335b68ce3fc85a93c4c6cd3bb6bc5ac490efe  
> 
> OK, that works/builds. It doesn't quite apply cleanly to linux-next-20200929
> but that's a minor detail and easy to get around.
> 
> Thanks.
> 
> Acked-by: Randy Dunlap <rdunlap@...radead.org> # build-tested
>

Looks correct to me.  Thanks!

Acked-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>