From: Andrew Morton <akpm@linux-foundation.org>
To: Pavel Machek <pavel@ucw.cz>
Cc: David Rientjes <rientjes@google.com>,
sgruszka@redhat.com, linux-wireless@vger.kernel.org,
johannes.berg@intel.com, wey-yi.w.guy@intel.com,
ilw@linux.intel.com, Andrew Morton <akpm@osdl.org>,
Mel Gorman <mgorman@suse.de>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: iwl3945: order 5 allocation during ifconfig up; vm problem?
Date: Tue, 11 Sep 2012 16:25:36 -0700 [thread overview]
Message-ID: <20120911162536.bd5171a1.akpm@linux-foundation.org> (raw)
In-Reply-To: <20120910111113.GA25159@elf.ucw.cz>
On Mon, 10 Sep 2012 13:11:13 +0200
Pavel Machek <pavel@ucw.cz> wrote:
> On Sun 2012-09-09 15:40:55, David Rientjes wrote:
> > On Sun, 9 Sep 2012, Pavel Machek wrote:
> >
> > > On 3.6.0-rc2+, I tried to turn on the wireless, but got
> > >
> > > root@amd:~# ifconfig wlan0 10.0.0.6 up
> > > SIOCSIFFLAGS: Cannot allocate memory
> > > SIOCSIFFLAGS: Cannot allocate memory
> > > root@amd:~#
> > >
> > > It looks like it uses "a bit too big" allocations to allocate
> > > firmware...? Order five allocation....
> > >
> > > Hmm... then I did "echo 3 > /proc/sys/vm/drop_caches" and now the
> > > network works. Is it VM problem that it failed to allocate memory when
> > > it was freeable?
> > >
> >
> > Do you have CONFIG_COMPACTION enabled?
>
> Yes:
>
> pavel@amd:/data/l/linux-good$ zgrep CONFIG_COMPACTION /proc/config.gz
> CONFIG_COMPACTION=y
Asking for a 256k allocation is pretty crazy - this is an operating
system kernel, not a userspace application.
I'm wondering if this is due to a recent change, but I'm having trouble
working out where the allocation call site is.
--
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:[~2012-09-11 23:25 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-09 21:32 iwl3945: order 5 allocation during ifconfig up; vm problem? Pavel Machek
2012-09-09 22:40 ` David Rientjes
2012-09-10 11:11 ` Pavel Machek
2012-09-11 23:25 ` Andrew Morton [this message]
2012-09-12 5:16 ` Eric Dumazet
2012-09-12 5:57 ` Marc MERLIN
2012-09-12 6:54 ` Johannes Berg
2012-09-24 9:03 ` Dan Carpenter
2012-09-24 9:14 ` Johannes Berg
2012-09-12 9:22 ` Stanislaw Gruszka
2012-09-12 10:18 ` Mel Gorman
2012-10-03 11:37 ` Stanislaw Gruszka
2012-10-03 18:07 ` David Rientjes
2012-10-05 8:37 ` Stanislaw Gruszka
2012-10-06 12:08 ` Pavel Machek
2012-10-08 15:38 ` Stanislaw Gruszka
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=20120911162536.bd5171a1.akpm@linux-foundation.org \
--to=akpm@linux-foundation.org \
--cc=akpm@osdl.org \
--cc=ilw@linux.intel.com \
--cc=johannes.berg@intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=linux-wireless@vger.kernel.org \
--cc=mgorman@suse.de \
--cc=pavel@ucw.cz \
--cc=rientjes@google.com \
--cc=sgruszka@redhat.com \
--cc=wey-yi.w.guy@intel.com \
/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).