Re: [LTP] [PATCH 0/2] numa_helper: get nodes with mem/cpu/both

[Caspar Zhang <caspar@casparzhang.com>]

On 07/20/2012 06:19 PM, Jan Stancek wrote:
> numa_helper has been used for syscalls testcases, which
> care about nodes with memory. Based on discussion here:
> http://article.gmane.org/gmane.linux.ltp/16325
> it was deemed, that 'flag' extension would be useful,
> to allow tests to ask for nodes with memory/cpu/both.
>
> This patch series is introducing flag to get_allowed_nodes().
>
> For example, a config like this one:
>    # numactl -H
>    available: 3 nodes (2,4-5)
>    node 2 cpus: 0
>    node 2 size: 511 MB
>    node 2 free: 88 MB
>    node 4 cpus:
>    node 4 size: 256 MB
>    node 4 free: 34 MB
>    node 5 cpus:
>    node 5 size: 255 MB
>    node 5 free: 59 MB
>
> would return:
>    nodes (flag=0): 2 4 5 (any)
>    nodes (flag=1): 2 4 5 (mem)
>    nodes (flag=2): 2     (cpus)
>    nodes (flag=3): 2     (mem and cpus)
>
> Tested with:
> numactl-devel-0.9.8-7.el5
> numactl-devel-2.0.3-9.el6
> numactl-devel-2.0.7-6.el7
>
> numa_node_to_cpus() is broken in older libnuma < 1, so cpumap
> is used instead.
>
> Next step (not part of this series) is to move it outside
> syscalls area, so it can be used by other testcases.
>
> Jan Stancek (2):
>    numa_helper: add flag to get_allowed_nodes()
>    update testcases to use flag for get_allowed_nodes()
>
>   .../syscalls/get_mempolicy/get_mempolicy01.c       |    5 +-
>   testcases/kernel/syscalls/mbind/mbind01.c          |    5 +-
>   .../kernel/syscalls/move_pages/move_pages02.c      |    5 +-
>   .../kernel/syscalls/move_pages/move_pages03.c      |    5 +-
>   .../kernel/syscalls/move_pages/move_pages04.c      |    5 +-
>   .../kernel/syscalls/move_pages/move_pages05.c      |    5 +-
>   .../kernel/syscalls/move_pages/move_pages06.c      |    5 +-
>   .../kernel/syscalls/move_pages/move_pages07.c      |    5 +-
>   .../kernel/syscalls/move_pages/move_pages08.c      |    5 +-
>   .../kernel/syscalls/move_pages/move_pages09.c      |    5 +-
>   .../kernel/syscalls/move_pages/move_pages10.c      |    5 +-
>   .../kernel/syscalls/move_pages/move_pages11.c      |    5 +-
>   .../syscalls/move_pages/move_pages_support.c       |    8 +-
>   testcases/kernel/syscalls/numa/lib/numa_helper.c   |  211 +++++++++++++++-----
>   testcases/kernel/syscalls/numa/lib/numa_helper.h   |    8 +-
>   15 files changed, 203 insertions(+), 84 deletions(-)
>
>

Thanks Jan for your patches! I want to test the patchset on all arches 
and on major releases, so would you mind if I hold on pushing until I 
finish the testing next week?

Also during that period, any comments from anyone is welcomed.

Thanks,
Caspar


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