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From: David Hildenbrand <david@redhat.com>
To: Michal Hocko <mhocko@kernel.org>,
	Dan Williams <dan.j.williams@intel.com>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	Andrew Morton <akpm@linux-foundation.org>,
	Johannes Weiner <hannes@cmpxchg.org>,
	Minchan Kim <minchan@kernel.org>,
	Huang Ying <ying.huang@intel.com>,
	Wei Yang <richard.weiyang@gmail.com>,
	Keith Busch <keith.busch@intel.com>,
	Mel Gorman <mgorman@techsingularity.net>
Subject: Re: [PATCH v1 3/3] mm/shuffle: remove dynamic reconfiguration
Date: Tue, 16 Jun 2020 15:45:33 +0200	[thread overview]
Message-ID: <30c35cd2-8167-d402-2c7e-94f5fcce0274@redhat.com> (raw)
In-Reply-To: <20200616124120.GF9499@dhcp22.suse.cz>

On 16.06.20 14:41, Michal Hocko wrote:
> [Add Dan]

Whops, dropped by mistake. Thanks for adding.

> 
> On Tue 16-06-20 13:52:13, David Hildenbrand wrote:
>> Commit e900a918b098 ("mm: shuffle initial free memory to improve
>> memory-side-cache utilization") promised "autodetection of a
>> memory-side-cache (to be added in a follow-on patch)" over a year ago.
>>
>> The original series included patches [1], however, they were dropped
>> during review [2] to be followed-up later.
>>
>> Let's simplify for now and re-add when really (ever?) needed.
>>
>> [1] https://lkml.kernel.org/r/154510700291.1941238.817190985966612531.stgit@dwillia2-desk3.amr.corp.intel.com/
>> [2] https://lkml.kernel.org/r/154690326478.676627.103843791978176914.stgit@dwillia2-desk3.amr.corp.intel.com/
>>
>> Cc: Andrew Morton <akpm@linux-foundation.org>
>> Cc: Johannes Weiner <hannes@cmpxchg.org>
>> Cc: Michal Hocko <mhocko@suse.com>
>> Cc: Minchan Kim <minchan@kernel.org>
>> Cc: Huang Ying <ying.huang@intel.com>
>> Cc: Wei Yang <richard.weiyang@gmail.com>
>> Cc: Keith Busch <keith.busch@intel.com>
>> Cc: Mel Gorman <mgorman@techsingularity.net>
>> Signed-off-by: David Hildenbrand <david@redhat.com>
> 
> While I am not against removing this unused code I am really curious
> what is the future of the auto detection. Has this just fall through
> cracks or there are some more serious problem to make detection
> possible/reliable?

From the bouncing mails I assume Keith - author of the original patches
in [1] -  is no longer working at Intel (or I messed up :) "#5.1.0
Address rejected"). Maybe Dan can clarify what the future of this is.

-- 
Thanks,

David / dhildenb


  reply	other threads:[~2020-06-16 13:45 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-16 11:52 [PATCH v1 0/3] mm/shuffle: fix and cleanips David Hildenbrand
2020-06-16 11:52 ` [PATCH v1 1/3] mm/shuffle: don't move pages between zones and don't read garbage memmaps David Hildenbrand
2020-06-16 12:43   ` Michal Hocko
2020-06-16 11:52 ` [PATCH v1 2/3] mm/memory_hotplug: don't shuffle complete zone when onlining memory David Hildenbrand
2020-06-16 12:50   ` Michal Hocko
2020-06-16 17:00     ` Dan Williams
2020-06-16 17:00       ` Dan Williams
2020-06-16 17:03       ` Dan Williams
2020-06-16 17:03         ` Dan Williams
2020-06-16 18:24         ` David Hildenbrand
2020-06-17  6:48         ` Michal Hocko
2020-06-17 18:13           ` Dan Williams
2020-06-17 18:13             ` Dan Williams
2020-06-16 11:52 ` [PATCH v1 3/3] mm/shuffle: remove dynamic reconfiguration David Hildenbrand
2020-06-16 12:41   ` Michal Hocko
2020-06-16 13:45     ` David Hildenbrand [this message]
2020-06-16 16:59       ` Dan Williams
2020-06-16 16:59         ` Dan Williams

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