Re: [PATCH v2 1/2] smaps: fill missing fields for vma(VM_HUGETLB)

Andrew Morton
2015-08-07T22:51:06Z

On Fri, 7 Aug 2015 07:24:50 +0000 Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> wrote:

> Currently smaps reports many zero fields for vma(VM_HUGETLB), which is
> inconvenient when we want to know per-task or per-vma base hugetlb usage.
> This patch enables these fields by introducing smaps_hugetlb_range().
>
> before patch:
>
> Size: 20480 kB
> Rss: 0 kB
> Pss: 0 kB
> Shared_Clean: 0 kB
> Shared_Dirty: 0 kB
> Private_Clean: 0 kB
> Private_Dirty: 0 kB
> Referenced: 0 kB
> Anonymous: 0 kB
> AnonHugePages: 0 kB
> Swap: 0 kB
> KernelPageSize: 2048 kB
> MMUPageSize: 2048 kB
> Locked: 0 kB
> VmFlags: rd wr mr mw me de ht
>
> after patch:
>
> Size: 20480 kB
> Rss: 18432 kB
> Pss: 18432 kB
> Shared_Clean: 0 kB
> Shared_Dirty: 0 kB
> Private_Clean: 0 kB
> Private_Dirty: 18432 kB
> Referenced: 18432 kB
> Anonymous: 18432 kB
> AnonHugePages: 0 kB
> Swap: 0 kB
> KernelPageSize: 2048 kB
> MMUPageSize: 2048 kB
> Locked: 0 kB
> VmFlags: rd wr mr mw me de ht
>

Is there something we can say about this in
Documentation/filesystems/proc.txt?