Re: [PATCH v1 3/3] mm/shuffle: remove dynamic reconfiguration

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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@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/
>> [2] https://lkml.kernel.org/r/154690326478.676627.103843791978176914.stgit@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/
>>
>> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
>> Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
>> Cc: Michal Hocko <mhocko@xxxxxxxx>
>> Cc: Minchan Kim <minchan@xxxxxxxxxx>
>> Cc: Huang Ying <ying.huang@xxxxxxxxx>
>> Cc: Wei Yang <richard.weiyang@xxxxxxxxx>
>> Cc: Keith Busch <keith.busch@xxxxxxxxx>
>> Cc: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
>> Signed-off-by: David Hildenbrand <david@xxxxxxxxxx>
> 
> 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





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