From: Andi Kleen <ak@suse.de>
To: Paul Jackson <pj@sgi.com>
Cc: Christoph Lameter <clameter@engr.sgi.com>,
kenneth.w.chen@intel.com, linux-mm@kvack.org,
linux-ia64@vger.kernel.org
Subject: Re: [NUMA] Display and modify the memory policy of a process
Date: Fri, 15 Jul 2005 11:46:16 +0000 [thread overview]
Message-ID: <20050715134616.43130b30@basil.nowhere.org> (raw)
In-Reply-To: <20050714230501.4a9df11e.pj@sgi.com>
On Thu, 14 Jul 2005 23:05:01 -0700
Paul Jackson <pj@sgi.com> wrote:
> Christoph wrote:
> > This is an implementation that deals with monitoring and managing running
> > processes.
>
> So is this patch roughly equivalent to adding a pid to the
> mbind/set_mempolicy/get_mempolicy system calls?
>
> Not that I am advocating for or against adding doing that. But this
> seems like alot of code, with new and exciting API details, just to
> add a pid argument, if such it be.
>
> Andi - could you remind us all why you chose not to have a pid argument
> in these calls?
Because of locking issues and I don't think external processes
should mess with virtual addresses of other processes. There is
just no way to do the later cleanly and race free.
I haven't seen the patch, but from the description it sounds wrong.
-Andi
WARNING: multiple messages have this Message-ID (diff)
From: Andi Kleen <ak@suse.de>
To: Paul Jackson <pj@sgi.com>
Cc: Christoph Lameter <clameter@engr.sgi.com>,
kenneth.w.chen@intel.com, linux-mm@kvack.org,
linux-ia64@vger.kernel.org
Subject: Re: [NUMA] Display and modify the memory policy of a process through /proc/<pid>/numa_policy
Date: Fri, 15 Jul 2005 13:46:16 +0200 [thread overview]
Message-ID: <20050715134616.43130b30@basil.nowhere.org> (raw)
In-Reply-To: <20050714230501.4a9df11e.pj@sgi.com>
On Thu, 14 Jul 2005 23:05:01 -0700
Paul Jackson <pj@sgi.com> wrote:
> Christoph wrote:
> > This is an implementation that deals with monitoring and managing running
> > processes.
>
> So is this patch roughly equivalent to adding a pid to the
> mbind/set_mempolicy/get_mempolicy system calls?
>
> Not that I am advocating for or against adding doing that. But this
> seems like alot of code, with new and exciting API details, just to
> add a pid argument, if such it be.
>
> Andi - could you remind us all why you chose not to have a pid argument
> in these calls?
Because of locking issues and I don't think external processes
should mess with virtual addresses of other processes. There is
just no way to do the later cleanly and race free.
I haven't seen the patch, but from the description it sounds wrong.
-Andi
--
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:"aart@kvack.org"> aart@kvack.org </a>
next prev parent reply other threads:[~2005-07-15 11:46 UTC|newest]
Thread overview: 70+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-07-15 1:39 [NUMA] Display and modify the memory policy of a process through Christoph Lameter
2005-07-15 1:39 ` [NUMA] Display and modify the memory policy of a process through /proc/<pid>/numa_policy Christoph Lameter
2005-07-15 3:50 ` [NUMA] Display and modify the memory policy of a process Paul Jackson
2005-07-15 3:50 ` [NUMA] Display and modify the memory policy of a process through /proc/<pid>/numa_policy Paul Jackson
2005-07-15 4:52 ` Chen, Kenneth W
2005-07-15 4:52 ` Chen, Kenneth W
2005-07-15 5:07 ` [NUMA] Display and modify the memory policy of a process through Christoph Lameter
2005-07-15 5:07 ` [NUMA] Display and modify the memory policy of a process through /proc/<pid>/numa_policy Christoph Lameter
2005-07-15 6:05 ` [NUMA] Display and modify the memory policy of a process Paul Jackson
2005-07-15 6:05 ` [NUMA] Display and modify the memory policy of a process through /proc/<pid>/numa_policy Paul Jackson
2005-07-15 11:46 ` Andi Kleen [this message]
2005-07-15 11:46 ` Andi Kleen
2005-07-15 16:06 ` [NUMA] Display and modify the memory policy of a process through Christoph Lameter
2005-07-15 16:06 ` [NUMA] Display and modify the memory policy of a process through /proc/<pid>/numa_policy Christoph Lameter
2005-07-15 21:04 ` [NUMA] Display and modify the memory policy of a process Paul Jackson
2005-07-15 21:04 ` [NUMA] Display and modify the memory policy of a process through /proc/<pid>/numa_policy Paul Jackson
2005-07-15 21:12 ` Andi Kleen
2005-07-15 21:12 ` Andi Kleen
2005-07-15 21:20 ` [NUMA] Display and modify the memory policy of a process through Christoph Lameter
2005-07-15 21:20 ` [NUMA] Display and modify the memory policy of a process through /proc/<pid>/numa_policy Christoph Lameter
2005-07-15 21:47 ` Andi Kleen
2005-07-15 21:47 ` Andi Kleen
2005-07-15 21:55 ` [NUMA] Display and modify the memory policy of a process through Christoph Lameter
2005-07-15 21:55 ` [NUMA] Display and modify the memory policy of a process through /proc/<pid>/numa_policy Christoph Lameter
2005-07-15 22:07 ` Andi Kleen
2005-07-15 22:07 ` Andi Kleen
2005-07-15 22:30 ` [NUMA] Display and modify the memory policy of a process through Christoph Lameter
2005-07-15 22:30 ` [NUMA] Display and modify the memory policy of a process through /proc/<pid>/numa_policy Christoph Lameter
2005-07-15 22:37 ` Andi Kleen
2005-07-15 22:37 ` Andi Kleen
2005-07-15 22:49 ` [NUMA] Display and modify the memory policy of a process through Christoph Lameter
2005-07-15 22:49 ` [NUMA] Display and modify the memory policy of a process through /proc/<pid>/numa_policy Christoph Lameter
2005-07-15 22:56 ` Andi Kleen
2005-07-15 22:56 ` Andi Kleen
2005-07-15 23:11 ` [NUMA] Display and modify the memory policy of a process through Christoph Lameter
2005-07-15 23:11 ` [NUMA] Display and modify the memory policy of a process through /proc/<pid>/numa_policy Christoph Lameter
2005-07-15 23:44 ` Andi Kleen
2005-07-15 23:44 ` Andi Kleen
2005-07-15 23:56 ` [NUMA] Display and modify the memory policy of a process through Christoph Lameter
2005-07-15 23:56 ` [NUMA] Display and modify the memory policy of a process through /proc/<pid>/numa_policy Christoph Lameter
2005-07-16 2:01 ` Andi Kleen
2005-07-16 2:01 ` Andi Kleen
2005-07-16 15:14 ` [NUMA] Display and modify the memory policy of a process through Christoph Lameter
2005-07-16 15:14 ` [NUMA] Display and modify the memory policy of a process through /proc/<pid>/numa_policy Christoph Lameter
2005-07-16 22:39 ` [NUMA] Display and modify the memory policy of a process Paul Jackson
2005-07-16 22:39 ` [NUMA] Display and modify the memory policy of a process through /proc/<pid>/numa_policy Paul Jackson
2005-07-16 23:30 ` [NUMA] Display and modify the memory policy of a process Paul Jackson
2005-07-16 23:30 ` [NUMA] Display and modify the memory policy of a process through /proc/<pid>/numa_policy Paul Jackson
2005-07-17 1:55 ` [NUMA] Display and modify the memory policy of a process through Christoph Lameter
2005-07-17 1:55 ` [NUMA] Display and modify the memory policy of a process through /proc/<pid>/numa_policy Christoph Lameter
2005-07-17 3:50 ` [NUMA] Display and modify the memory policy of a process Paul Jackson
2005-07-17 3:50 ` [NUMA] Display and modify the memory policy of a process through /proc/<pid>/numa_policy Paul Jackson
2005-07-17 5:56 ` [NUMA] Display and modify the memory policy of a process through Christoph Lameter
2005-07-17 5:56 ` [NUMA] Display and modify the memory policy of a process through /proc/<pid>/numa_policy Christoph Lameter
2005-07-17 7:22 ` [NUMA] Display and modify the memory policy of a process Paul Jackson
2005-07-17 7:22 ` [NUMA] Display and modify the memory policy of a process through /proc/<pid>/numa_policy Paul Jackson
2005-07-17 3:21 ` [NUMA] Display and modify the memory policy of a process through Christoph Lameter
2005-07-17 3:21 ` [NUMA] Display and modify the memory policy of a process through /proc/<pid>/numa_policy Christoph Lameter
2005-07-17 4:51 ` [NUMA] Display and modify the memory policy of a process Paul Jackson
2005-07-17 4:51 ` [NUMA] Display and modify the memory policy of a process through /proc/<pid>/numa_policy Paul Jackson
2005-07-17 6:00 ` [NUMA] Display and modify the memory policy of a process through Christoph Lameter
2005-07-17 6:00 ` [NUMA] Display and modify the memory policy of a process through /proc/<pid>/numa_policy Christoph Lameter
2005-07-17 8:17 ` [NUMA] Display and modify the memory policy of a process Paul Jackson
2005-07-17 8:17 ` [NUMA] Display and modify the memory policy of a process through /proc/<pid>/numa_policy Paul Jackson
2005-07-16 0:00 ` [NUMA] Display and modify the memory policy of a process through David Singleton
2005-07-16 0:00 ` [NUMA] Display and modify the memory policy of a process through /proc/<pid>/numa_policy David Singleton
2005-07-16 0:16 ` [NUMA] Display and modify the memory policy of a process through Steve Neuner
2005-07-16 0:16 ` [NUMA] Display and modify the memory policy of a process through /proc/<pid>/numa_policy Steve Neuner
2005-07-15 5:55 ` Chen, Kenneth W
2005-07-15 5:55 ` Chen, Kenneth W
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=20050715134616.43130b30@basil.nowhere.org \
--to=ak@suse.de \
--cc=clameter@engr.sgi.com \
--cc=kenneth.w.chen@intel.com \
--cc=linux-ia64@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=pj@sgi.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 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.