From: Mike Rapoport <rppt@linux.ibm.com>
To: Matthew Wilcox <willy@infradead.org>
Cc: Mel Gorman <mgorman@techsingularity.net>,
Andrew Morton <akpm@linux-foundation.org>,
Mikulas Patocka <mpatocka@redhat.com>,
James Bottomley <James.Bottomley@hansenpartnership.com>,
linux-parisc@vger.kernel.org, linux-mm@kvack.org,
Vlastimil Babka <vbabka@suse.cz>,
LKML <linux-kernel@vger.kernel.org>,
linux-arch@vger.kernel.org
Subject: Re: DISCONTIGMEM is deprecated
Date: Sun, 21 Apr 2019 09:38:59 +0300 [thread overview]
Message-ID: <20190421063859.GA19926@rapoport-lnx> (raw)
In-Reply-To: <20190419140521.GI7751@bombadil.infradead.org>
On Fri, Apr 19, 2019 at 07:05:21AM -0700, Matthew Wilcox wrote:
> On Fri, Apr 19, 2019 at 10:43:35AM +0100, Mel Gorman wrote:
> > DISCONTIG is essentially deprecated and even parisc plans to move to
> > SPARSEMEM so there is no need to be fancy, this patch simply disables
> > watermark boosting by default on DISCONTIGMEM.
>
> I don't think parisc is the only arch which uses DISCONTIGMEM for !NUMA
> scenarios. Grepping the arch/ directories shows:
>
> alpha (does support NUMA, but also non-NUMA DISCONTIGMEM)
> arc (for supporting more than 1GB of memory)
> ia64 (looks complicated ...)
> m68k (for multiple chunks of memory)
> mips (does support NUMA but also non-NUMA)
> parisc (both NUMA and non-NUMA)
i386 NUMA as well
> I'm not sure that these architecture maintainers even know that DISCONTIGMEM
> is deprecated. Adding linux-arch to the cc.
>
--
Sincerely yours,
Mike.
WARNING: multiple messages have this Message-ID (diff)
From: Mike Rapoport <rppt@linux.ibm.com>
To: Matthew Wilcox <willy@infradead.org>
Cc: Mel Gorman <mgorman@techsingularity.net>,
Andrew Morton <akpm@linux-foundation.org>,
Mikulas Patocka <mpatocka@redhat.com>,
James Bottomley <James.Bottomley@hansenpartnership.com>,
linux-parisc@vger.kernel.org, linux-mm@kvack.org,
Vlastimil Babka <vbabka@suse.cz>,
LKML <linux-kernel@vger.kernel.org>,
linux-arch@vger.kernel.org
Subject: Re: DISCONTIGMEM is deprecated
Date: Sun, 21 Apr 2019 09:38:59 +0300 [thread overview]
Message-ID: <20190421063859.GA19926@rapoport-lnx> (raw)
Message-ID: <20190421063859.RrhQP176gjy7R7y6eXYQqyNsYLTVi-YmIOCgoderMfk@z> (raw)
In-Reply-To: <20190419140521.GI7751@bombadil.infradead.org>
On Fri, Apr 19, 2019 at 07:05:21AM -0700, Matthew Wilcox wrote:
> On Fri, Apr 19, 2019 at 10:43:35AM +0100, Mel Gorman wrote:
> > DISCONTIG is essentially deprecated and even parisc plans to move to
> > SPARSEMEM so there is no need to be fancy, this patch simply disables
> > watermark boosting by default on DISCONTIGMEM.
>
> I don't think parisc is the only arch which uses DISCONTIGMEM for !NUMA
> scenarios. Grepping the arch/ directories shows:
>
> alpha (does support NUMA, but also non-NUMA DISCONTIGMEM)
> arc (for supporting more than 1GB of memory)
> ia64 (looks complicated ...)
> m68k (for multiple chunks of memory)
> mips (does support NUMA but also non-NUMA)
> parisc (both NUMA and non-NUMA)
i386 NUMA as well
> I'm not sure that these architecture maintainers even know that DISCONTIGMEM
> is deprecated. Adding linux-arch to the cc.
>
--
Sincerely yours,
Mike.
next prev parent reply other threads:[~2019-04-21 6:38 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-19 9:43 [PATCH] mm: Do not boost watermarks to avoid fragmentation for the DISCONTIG memory model Mel Gorman
2019-04-19 14:05 ` DISCONTIGMEM is deprecated Matthew Wilcox
2019-04-19 14:28 ` Mel Gorman
2019-04-19 20:08 ` Helge Deller
2019-05-05 8:53 ` Mike Rapoport
2019-05-05 8:53 ` Mike Rapoport
2019-04-21 6:38 ` Mike Rapoport [this message]
2019-04-21 6:38 ` Mike Rapoport
2019-04-21 13:26 ` Matthew Wilcox
2019-04-21 21:16 ` Mel Gorman
2019-04-23 7:13 ` Christoph Hellwig
2019-04-24 11:33 ` Mike Rapoport
2019-04-24 11:33 ` Mike Rapoport
2019-04-24 12:21 ` Mel Gorman
2019-04-28 8:11 ` Christoph Hellwig
2019-05-01 20:46 ` Mike Rapoport
2019-04-22 17:29 ` Christopher Lameter
2019-04-23 16:49 ` Meelis Roos
2019-04-28 8:13 ` Christoph Hellwig
2019-04-28 8:13 ` Christoph Hellwig
2019-04-29 16:58 ` Luck, Tony
2019-04-29 20:09 ` Christoph Hellwig
2019-04-29 20:09 ` Christoph Hellwig
2019-04-30 13:40 ` Christopher Lameter
2019-04-23 6:33 ` [PATCH] mm: Do not boost watermarks to avoid fragmentation for the DISCONTIG memory model Vlastimil Babka
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