Re: [RFC v2 PATCH 0/8] mm: mirrored memory support for page buddy allocations

[Dave Hansen]

On 06/26/2015 07:19 PM, Xishi Qiu wrote:
>  drivers/base/node.c      |  17 ++++---
>  fs/proc/meminfo.c        |   6 +++
>  include/linux/memblock.h |  29 ++++++++++--
>  include/linux/mmzone.h   |  10 ++++
>  include/linux/vmstat.h   |   2 +
>  mm/Kconfig               |   8 ++++
>  mm/memblock.c            |  33 +++++++++++--
>  mm/nobootmem.c           |   3 ++
>  mm/page_alloc.c          | 117 ++++++++++++++++++++++++++++++++++++-----------
>  mm/vmstat.c              |   4 ++
>  10 files changed, 190 insertions(+), 39 deletions(-)

Has there been any performance analysis done on this code?  I'm always
nervous when I see page_alloc.c churn.


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