From: Michal Hocko <mhocko@kernel.org>
To: Vlastimil Babka <vbabka@suse.cz>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
Mel Gorman <mgorman@techsingularity.net>,
Johannes Weiner <hannes@cmpxchg.org>,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
Hugh Dickins <hughd@google.com>,
David Rientjes <rientjes@google.com>
Subject: Re: [RFC] fs/proc/meminfo: introduce Unaccounted statistic
Date: Thu, 20 Oct 2016 15:33:58 +0200 [thread overview]
Message-ID: <20161020133358.GN14609@dhcp22.suse.cz> (raw)
In-Reply-To: <20161020121149.9935-1-vbabka@suse.cz>
On Thu 20-10-16 14:11:49, Vlastimil Babka wrote:
[...]
> Hi, I'm wondering if people would find this useful. If you think it is, and
> to not make performance worse, I could also make sure in proper submission
> that values are not read via global_page_state() multiple times etc...
I definitely find this information useful and hate to do the math all
the time but on the other hand this is quite fragile and I can imagine
we can easily forget to add something there and provide a misleading
information to the userspace. So I would be worried with a long term
maintainability of this.
--
Michal Hocko
SUSE Labs
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next prev parent reply other threads:[~2016-10-20 13:34 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-20 12:11 [RFC] fs/proc/meminfo: introduce Unaccounted statistic Vlastimil Babka
2016-10-20 13:33 ` Michal Hocko [this message]
2016-10-20 22:59 ` Dave Chinner
2016-10-21 7:25 ` Vlastimil Babka
2016-10-21 11:17 ` Dave Chinner
2016-10-21 7:36 ` Michal Hocko
2016-10-21 7:31 ` Vlastimil Babka
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