lkml.org 
[lkml]   [2014]   [Apr]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [RFC PATCH 0/5] Use an alternative to _PAGE_PROTNONE for _PAGE_NUMA v2
    On 04/08/2014 11:21 PM, Ingo Molnar wrote:
    >
    > I think the real underlying objection was that PTE_NUMA was the last
    > leftover from AutoNUMA, and removing it would have made it not a
    > 'compromise' patch set between 'AutoNUMA' and 'sched/numa', but would
    > have made the sched/numa approach 'win' by and large.
    >
    > The whole 'losing face' annoyance that plagues all of us (me
    > included).
    >
    > I didn't feel it was important to the general logic of adding access
    > pattern aware NUMA placement logic to the scheduler, and I obviously
    > could not ignore the NAKs from various mm folks insisting on PTE_NUMA,
    > so I conceded that point and Mel built on that approach as well.
    >
    > Nice it's being cleaned up, and I'm pretty happy about how NUMA
    > balancing ended up looking like.
    >

    How painful would it be to get rid of _PAGE_NUMA entirely? Page bits
    are a highly precious commodity and saving one would be valuable.

    -hpa




    \
     
     \ /
      Last update: 2014-04-10 02:01    [W:3.278 / U:0.044 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site