linux-kernel - Re: [PATCH v1 2/6] mm/memory_hotplug: remove CONFIG_MEMORY_HOTPLUG

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Date:   Tue, 5 Oct 2021 08:22:54 -0600
From:   Shuah Khan <skhan@...uxfoundation.org>
To:     David Hildenbrand <david@...hat.com>, linux-kernel@...r.kernel.org
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Jonathan Corbet <corbet@....net>, Alex Shi <alexs@...nel.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "H. Peter Anvin" <hpa@...or.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Andy Lutomirski <luto@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        Jason Wang <jasowang@...hat.com>,
        Shuah Khan <shuah@...nel.org>, Michal Hocko <mhocko@...e.com>,
        Oscar Salvador <osalvador@...e.de>,
        Mike Rapoport <rppt@...nel.org>, x86@...nel.org,
        linux-mm@...ck.org, linux-kselftest@...r.kernel.org,
        linux-doc@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        virtualization@...ts.linux-foundation.org,
        Shuah Khan <skhan@...uxfoundation.org>
Subject: Re: [PATCH v1 2/6] mm/memory_hotplug: remove
 CONFIG_MEMORY_HOTPLUG_SPARSE

On 9/29/21 8:35 AM, David Hildenbrand wrote:
> CONFIG_MEMORY_HOTPLUG depends on CONFIG_SPARSEMEM, so there is no need for
> CONFIG_MEMORY_HOTPLUG_SPARSE anymore; adjust all instances to use
> CONFIG_MEMORY_HOTPLUG and remove CONFIG_MEMORY_HOTPLUG_SPARSE.
> 
> Signed-off-by: David Hildenbrand <david@...hat.com>
> ---
>   arch/powerpc/include/asm/machdep.h            |  2 +-
>   arch/powerpc/kernel/setup_64.c                |  2 +-
>   arch/powerpc/platforms/powernv/setup.c        |  4 ++--
>   arch/powerpc/platforms/pseries/setup.c        |  2 +-
>   drivers/base/Makefile                         |  2 +-
>   drivers/base/node.c                           |  9 ++++-----
>   drivers/virtio/Kconfig                        |  2 +-
>   include/linux/memory.h                        | 18 +++++++-----------
>   include/linux/node.h                          |  4 ++--
>   lib/Kconfig.debug                             |  2 +-
>   mm/Kconfig                                    |  4 ----
>   mm/memory_hotplug.c                           |  2 --
>   tools/testing/selftests/memory-hotplug/config |  1 -
>   13 files changed, 21 insertions(+), 33 deletions(-)
> 

>   {
> diff --git a/tools/testing/selftests/memory-hotplug/config b/tools/testing/selftests/memory-hotplug/config
> index a7e8cd5bb265..1eef042a31e1 100644
> --- a/tools/testing/selftests/memory-hotplug/config
> +++ b/tools/testing/selftests/memory-hotplug/config
> @@ -1,5 +1,4 @@
>   CONFIG_MEMORY_HOTPLUG=y
> -CONFIG_MEMORY_HOTPLUG_SPARSE=y
>   CONFIG_NOTIFIER_ERROR_INJECTION=y
>   CONFIG_MEMORY_NOTIFIER_ERROR_INJECT=m
>   CONFIG_MEMORY_HOTREMOVE=y
> 

For Kselftest change:

Acked-by: Shuah Khan <skhan@...uxfoundation.org>

thanks,
-- Shuah