linux-kernel - Re: [PATCH 13/17] mm: move numa_distance and related code from x86 to numa

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Message-ID: <Zpusq94oFVrygufA@kernel.org>
Date: Sat, 20 Jul 2024 15:25:15 +0300
From: Mike Rapoport <rppt@...nel.org>
To: Jonathan Cameron <Jonathan.Cameron@...wei.com>
Cc: linux-kernel@...r.kernel.org,
	Alexander Gordeev <agordeev@...ux.ibm.com>,
	Andreas Larsson <andreas@...sler.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Arnd Bergmann <arnd@...db.de>, Borislav Petkov <bp@...en8.de>,
	Catalin Marinas <catalin.marinas@....com>,
	Christophe Leroy <christophe.leroy@...roup.eu>,
	Dan Williams <dan.j.williams@...el.com>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	David Hildenbrand <david@...hat.com>,
	"David S. Miller" <davem@...emloft.net>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Heiko Carstens <hca@...ux.ibm.com>,
	Huacai Chen <chenhuacai@...nel.org>, Ingo Molnar <mingo@...hat.com>,
	Jiaxun Yang <jiaxun.yang@...goat.com>,
	John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>,
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	"Rafael J. Wysocki" <rafael@...nel.org>,
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Subject: Re: [PATCH 13/17] mm: move numa_distance and related code from x86
 to numa_memblks

On Fri, Jul 19, 2024 at 06:48:42PM +0100, Jonathan Cameron wrote:
> On Tue, 16 Jul 2024 14:13:42 +0300
> Mike Rapoport <rppt@...nel.org> wrote:
> 
> > From: "Mike Rapoport (Microsoft)" <rppt@...nel.org>
> > 
> > Move code dealing with numa_distance array from arch/x86 to
> > mm/numa_memblks.c
> 
> It's not really numa memblock related. Is this the best place
> to put it?

There is a dependency of numa_alloc_distance() on
numa_nodemask_from_meminfo() that relies on numa_memblk but I agree that
they are not really related.

However, I'd prefer to keep this code in mm/numa_memblks.c because
node_distance() definitions and related code are different between
architecures and having this code outside numa_memblks in e.g
mm/numa.c would be way more involved.
 
> > This code will be later reused by arch_numa.
> > 
> > No functional changes.
> > 
> > Signed-off-by: Mike Rapoport (Microsoft) <rppt@...nel.org>
> 

-- 
Sincerely yours,
Mike.