linux-kernel - Re: [PATCH v2 8/9] mm: replace CONFIG_NEED_MULTIPLE_NODES with CONFIG

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAMuHMdVa29gUQAdHjKh-qDNpOJaoGwXtUkBM2qnOTi1DWV70xA@mail.gmail.com>
Date:   Mon, 7 Jun 2021 10:53:08 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Mike Rapoport <rppt@...nel.org>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Arnd Bergmann <arnd@...db.de>,
        Ivan Kokshaysky <ink@...assic.park.msu.ru>,
        Jonathan Corbet <corbet@....net>,
        Matt Turner <mattst88@...il.com>,
        Mike Rapoport <rppt@...ux.ibm.com>,
        Richard Henderson <rth@...ddle.net>,
        Vineet Gupta <vgupta@...opsys.com>, kexec@...ts.infradead.org,
        alpha <linux-alpha@...r.kernel.org>,
        Linux-Arch <linux-arch@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        "open list:DOCUMENTATION" <linux-doc@...r.kernel.org>,
        "linux-ia64@...r.kernel.org" <linux-ia64@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-m68k <linux-m68k@...ts.linux-m68k.org>,
        "open list:BROADCOM NVRAM DRIVER" <linux-mips@...r.kernel.org>,
        Linux MM <linux-mm@...ck.org>,
        linux-riscv <linux-riscv@...ts.infradead.org>,
        linux-s390 <linux-s390@...r.kernel.org>,
        Linux-sh list <linux-sh@...r.kernel.org>,
        arcml <linux-snps-arc@...ts.infradead.org>,
        "open list:TENSILICA XTENSA PORT (xtensa)" 
        <linux-xtensa@...ux-xtensa.org>,
        linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>,
        sparclinux <sparclinux@...r.kernel.org>
Subject: Re: [PATCH v2 8/9] mm: replace CONFIG_NEED_MULTIPLE_NODES with CONFIG_NUMA

Hi Mike,

On Fri, Jun 4, 2021 at 8:50 AM Mike Rapoport <rppt@...nel.org> wrote:
> From: Mike Rapoport <rppt@...ux.ibm.com>
>
> After removal of DISCINTIGMEM the NEED_MULTIPLE_NODES and NUMA
> configuration options are equivalent.
>
> Drop CONFIG_NEED_MULTIPLE_NODES and use CONFIG_NUMA instead.
>
> Done with
>
>         $ sed -i 's/CONFIG_NEED_MULTIPLE_NODES/CONFIG_NUMA/' \
>                 $(git grep -wl CONFIG_NEED_MULTIPLE_NODES)
>         $ sed -i 's/NEED_MULTIPLE_NODES/NUMA/' \
>                 $(git grep -wl NEED_MULTIPLE_NODES)
>
> with manual tweaks afterwards.
>
> Signed-off-by: Mike Rapoport <rppt@...ux.ibm.com>

Thanks for your patch!

As you dropped the following hunk from v2 of PATCH 5/9, there's now
one reference left of CONFIG_NEED_MULTIPLE_NODES
(plus the discontigmem comment):

-diff --git a/mm/memory.c b/mm/memory.c
-index f3ffab9b9e39157b..fd0ebb63be3304f5 100644
---- a/mm/memory.c
-+++ b/mm/memory.c
-@@ -90,8 +90,7 @@
- #warning Unfortunate NUMA and NUMA Balancing config, growing
page-frame for last_cpupid.
- #endif
-
--#ifndef CONFIG_NEED_MULTIPLE_NODES
--/* use the per-pgdat data instead for discontigmem - mbligh */
-+#ifdef CONFIG_FLATMEM
- unsigned long max_mapnr;
- EXPORT_SYMBOL(max_mapnr);
-

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds