Re: [PATCH v5 2/2] mm: hugetlb: proc: add HugetlbPages field to /proc/PID/status

From	David Rientjes <rientjes@google.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH v5 2/2] mm: hugetlb: proc: add HugetlbPages field to /proc/PID/status
Date	2015-08-20 22:00 +0200
Message-ID	<pZEae-6lY-13@gated-at.bofh.it> (permalink)
References	<pWrMe-45O-9@gated-at.bofh.it> <pZtHQ-8aH-15@gated-at.bofh.it> <pZtHQ-8aH-13@gated-at.bofh.it> <pZvTk-337-21@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On Thu, 20 Aug 2015, Michal Hocko wrote:

> On Thu 20-08-15 08:26:27, Naoya Horiguchi wrote:
> > Currently there's no easy way to get per-process usage of hugetlb pages,
> 
> Is this really the case after your previous patch? You have both 
> HugetlbPages and KernelPageSize which should be sufficient no?
> 
> Reading a single file is, of course, easier but is it really worth the
> additional code? I haven't really looked at the patch so I might be
> missing something but what would be an advantage over reading
> /proc/<pid>/smaps and extracting the information from there?
> 

/proc/pid/smaps requires root, /proc/pid/status doesn't.
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Thread

[PATCH v5 2/2] mm: hugetlb: proc: add HugetlbPages field to  /proc/PID/status Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> - 2015-08-20 10:50 +0200
  Re: [PATCH v5 2/2] mm: hugetlb: proc: add HugetlbPages field to  /proc/PID/status Michal Hocko <mhocko@kernel.org> - 2015-08-20 13:10 +0200
    Re: [PATCH v5 2/2] mm: hugetlb: proc: add HugetlbPages field to  /proc/PID/status David Rientjes <rientjes@google.com> - 2015-08-20 22:00 +0200
      Re: [PATCH v5 2/2] mm: hugetlb: proc: add HugetlbPages field to  /proc/PID/status Michal Hocko <mhocko@kernel.org> - 2015-08-21 08:40 +0200
        Re: [PATCH v5 2/2] mm: hugetlb: proc: add HugetlbPages field to  /proc/PID/status Jörn Engel <joern@purestorage.com> - 2015-08-21 18:40 +0200
    Re: [PATCH v5 2/2] mm: hugetlb: proc: add HugetlbPages field to  /proc/PID/status Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> - 2015-08-21 01:40 +0200
      Re: [PATCH v5 2/2] mm: hugetlb: proc: add HugetlbPages field to  /proc/PID/status Michal Hocko <mhocko@kernel.org> - 2015-08-21 09:00 +0200
        Re: [PATCH v5 2/2] mm: hugetlb: proc: add HugetlbPages field to  /proc/PID/status Jörn Engel <joern@purestorage.com> - 2015-08-21 18:40 +0200
          Re: [PATCH v5 2/2] mm: hugetlb: proc: add HugetlbPages field to  /proc/PID/status Michal Hocko <mhocko@kernel.org> - 2015-08-24 11:00 +0200
            Re: [PATCH v5 2/2] mm: hugetlb: proc: add HugetlbPages field to  /proc/PID/status David Rientjes <rientjes@google.com> - 2015-08-26 01:30 +0200
              Re: [PATCH v5 2/2] mm: hugetlb: proc: add HugetlbPages field to  /proc/PID/status Michal Hocko <mhocko@kernel.org> - 2015-08-26 08:40 +0200
                Re: [PATCH v5 2/2] mm: hugetlb: proc: add HugetlbPages field to  /proc/PID/status David Rientjes <rientjes@google.com> - 2015-08-27 00:10 +0200
                Re: [PATCH v5 2/2] mm: hugetlb: proc: add HugetlbPages field to  /proc/PID/status Michal Hocko <mhocko@kernel.org> - 2015-08-27 08:50 +0200
                Re: [PATCH v5 2/2] mm: hugetlb: proc: add HugetlbPages field to  /proc/PID/status Jörn Engel <joern@purestorage.com> - 2015-08-27 19:30 +0200
                Re: [PATCH v5 2/2] mm: hugetlb: proc: add HugetlbPages field to  /proc/PID/status David Rientjes <rientjes@google.com> - 2015-08-27 22:50 +0200
                Re: [PATCH v5 2/2] mm: hugetlb: proc: add HugetlbPages field to  /proc/PID/status Michal Hocko <mhocko@kernel.org> - 2015-08-31 11:20 +0200

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