From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Li Zefan <lizf@cn.fujitsu.com>,
linux-kernel@vger.kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@elte.hu>
Subject: Re: mmotm 2010-10-20-15-01 uploaded
Date: Thu, 21 Oct 2010 11:54:29 +0200 [thread overview]
Message-ID: <1287654869.3488.96.camel@twins> (raw)
In-Reply-To: <20101021003008.064302ad.akpm@linux-foundation.org>
On Thu, 2010-10-21 at 00:30 -0700, Andrew Morton wrote:
> btw, it's a bit sad to use KM_TYPE_NR*NR_CPUS pages of virtual address
> space for kmap_atomic(). I'd expect that distros set NR_CPUS quite
> large (Fedora has 256). That's 20MB of virtual address space consumed,
> I think.
>
> And we consume it on non-highmem kernels, too...
I guess its something to look at, luckily i386 kernels tend to have
small NR_CPUS and x86_64 kernels have gobs of vaddr space so its not
really a problem, but yeah would be nice to fix.
next prev parent reply other threads:[~2010-10-21 9:54 UTC|newest]
Thread overview: 77+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-20 22:01 mmotm 2010-10-20-15-01 uploaded akpm
2010-10-21 2:54 ` Li Zefan
2010-10-21 3:15 ` Li Zefan
2010-10-21 3:38 ` Konrad Rzeszutek Wilk
2010-10-21 3:44 ` Li Zefan
2010-10-21 14:28 ` Konrad Rzeszutek Wilk
2010-10-21 3:46 ` Andrew Morton
2010-10-21 7:17 ` Peter Zijlstra
2010-10-21 7:30 ` Andrew Morton
2010-10-21 9:52 ` Peter Zijlstra
2010-10-21 9:54 ` Peter Zijlstra [this message]
2010-10-21 7:41 ` HDA: no sound [was: mmotm 2010-10-20-15-01 uploaded] Jiri Slaby
2010-10-21 7:41 ` Jiri Slaby
2010-10-21 7:49 ` Takashi Iwai
2010-10-21 7:49 ` Takashi Iwai
2010-10-21 7:57 ` Jiri Slaby
2010-10-21 7:57 ` Jiri Slaby
2010-10-21 8:05 ` Takashi Iwai
2010-10-21 8:05 ` Takashi Iwai
2010-10-21 18:27 ` Jiri Slaby
2010-10-21 18:27 ` Jiri Slaby
2010-10-21 19:20 ` Takashi Iwai
2010-10-21 19:20 ` Takashi Iwai
2010-10-21 19:21 ` Jiri Slaby
2010-10-21 19:21 ` Jiri Slaby
2010-10-21 19:22 ` Takashi Iwai
2010-10-21 19:22 ` Takashi Iwai
2010-10-21 19:40 ` Takashi Iwai
2010-10-21 19:40 ` Takashi Iwai
2010-10-21 20:29 ` Valdis.Kletnieks
2010-10-21 20:29 ` Valdis.Kletnieks
2010-10-21 20:48 ` Takashi Iwai
2010-10-21 20:48 ` Takashi Iwai
2010-10-21 21:24 ` Valdis.Kletnieks
2010-10-21 21:24 ` Valdis.Kletnieks
2010-10-21 21:31 ` Takashi Iwai
2010-10-21 21:31 ` Takashi Iwai
2010-10-21 21:42 ` Jiri Slaby
2010-10-21 21:42 ` Jiri Slaby
2010-10-22 8:46 ` Colin Guthrie
2010-10-22 9:02 ` Takashi Iwai
2010-10-22 9:02 ` Takashi Iwai
2010-10-22 9:18 ` Jiri Slaby
2010-10-22 9:18 ` Jiri Slaby
2010-10-22 9:40 ` Takashi Iwai
2010-10-22 9:40 ` Takashi Iwai
2010-10-22 9:45 ` Jiri Slaby
2010-10-22 9:45 ` Jiri Slaby
2010-10-22 10:26 ` Takashi Iwai
2010-10-22 10:26 ` Takashi Iwai
2010-10-22 11:10 ` Jiri Slaby
2010-10-22 11:10 ` Jiri Slaby
2010-10-22 9:41 ` Colin Guthrie
2010-10-22 11:31 ` Clemens Ladisch
2010-10-22 11:31 ` [alsa-devel] " Clemens Ladisch
2010-10-22 11:51 ` Jiri Slaby
2010-10-22 11:51 ` [alsa-devel] " Jiri Slaby
2010-10-22 14:03 ` Takashi Iwai
2010-10-22 14:03 ` [alsa-devel] " Takashi Iwai
2010-10-22 19:53 ` Colin Guthrie
2010-10-21 15:22 ` Valdis.Kletnieks
2010-10-21 15:22 ` Valdis.Kletnieks
2010-10-21 17:59 ` Jiri Slaby
2010-10-21 17:59 ` Jiri Slaby
2010-10-21 11:10 ` mmotm 2010-10-20-15-01 uploaded Zimny Lech
2010-10-21 11:14 ` mmotm 2010-10-20 - netfilter Kconfig whinge Valdis.Kletnieks
2010-10-29 19:11 ` Patrick McHardy
2010-10-21 17:51 ` DVB: af9015 defunct [was: mmotm 2010-10-20-15-01 uploaded] Jiri Slaby
2010-10-21 22:24 ` Jiri Slaby
2010-10-22 9:21 ` Jiri Slaby
2010-10-22 13:56 ` Mauro Carvalho Chehab
2010-10-22 14:06 ` Jiri Slaby
2010-10-27 16:12 ` Mauro Carvalho Chehab
2010-10-27 16:36 ` Jiri Slaby
2010-10-27 17:05 ` Mauro Carvalho Chehab
2010-10-27 16:41 ` Antti Palosaari
2010-10-27 17:11 ` Mauro Carvalho Chehab
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=1287654869.3488.96.camel@twins \
--to=a.p.zijlstra@chello.nl \
--cc=akpm@linux-foundation.org \
--cc=hpa@zytor.com \
--cc=linux-kernel@vger.kernel.org \
--cc=lizf@cn.fujitsu.com \
--cc=mingo@elte.hu \
--cc=tglx@linutronix.de \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.