From: Dave Hansen <dave.hansen@intel.com>
To: linux-kernel@vger.kernel.org,
Andrea Arcangeli <aarcange@redhat.com>,
Mel Gorman <mgorman@suse.de>,
Andrew Morton <akpm@linux-foundation.org>,
linux-mm@kvack.org, Michal Hocko <mhocko@suse.cz>
Subject: Re: [RFC] mm: show message when updating min_free_kbytes in thp
Date: Thu, 02 Jan 2014 10:05:21 -0800 [thread overview]
Message-ID: <52C5AA61.8060701@intel.com> (raw)
In-Reply-To: <20140101002935.GA15683@localhost.localdomain>
On 12/31/2013 04:29 PM, Han Pingtian wrote:
> min_free_kbytes may be updated during thp's initialization. Sometimes,
> this will change the value being set by user. Showing message will
> clarify this confusion.
...
> - if (recommended_min > min_free_kbytes)
> + if (recommended_min > min_free_kbytes) {
> min_free_kbytes = recommended_min;
> + pr_info("min_free_kbytes is updated to %d by enabling transparent hugepage.\n",
> + min_free_kbytes);
> + }
"updated" doesn't tell us much. It's also kinda nasty that if we enable
then disable THP, we end up with an elevated min_free_kbytes. Maybe we
should at least put something in that tells the user how to get back
where they were if they care:
"raising min_free_kbytes from %d to %d to help transparent hugepage
allocations"
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2014-01-02 18:05 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-01 0:29 [RFC] mm: show message when updating min_free_kbytes in thp Han Pingtian
2014-01-02 18:05 ` Dave Hansen [this message]
2014-01-02 21:58 ` David Rientjes
2014-01-02 22:10 ` Dave Hansen
2014-01-02 23:36 ` David Rientjes
2014-01-02 23:48 ` Dave Hansen
2014-01-03 3:33 ` Han Pingtian
2014-01-03 18:17 ` Dave Hansen
2014-01-05 0:35 ` Han Pingtian
2014-01-06 16:46 ` Michal Hocko
2014-01-08 3:59 ` Han Pingtian
2014-01-08 8:20 ` Han Pingtian
2014-01-08 10:16 ` Michal Hocko
2014-01-09 7:32 ` Han Pingtian
2014-01-09 9:02 ` Michal Hocko
2014-01-09 21:15 ` David Rientjes
2014-01-10 8:05 ` Michal Hocko
2014-01-10 8:13 ` Andrew Morton
2014-01-10 8:17 ` Michal Hocko
2014-01-11 3:27 ` Han Pingtian
2014-01-14 20:07 ` Han Pingtian
2014-01-14 23:52 ` Andrew Morton
2014-01-15 0:25 ` David Rientjes
2014-01-15 0:35 ` Andrew Morton
2014-01-15 0:52 ` David Rientjes
2014-01-15 15:22 ` Mel Gorman
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=52C5AA61.8060701@intel.com \
--to=dave.hansen@intel.com \
--cc=aarcange@redhat.com \
--cc=akpm@linux-foundation.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=mgorman@suse.de \
--cc=mhocko@suse.cz \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).