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Date: Thu, 13 May 2010 11:58:44 -0700
From: Greg KH <gregkh@suse.de>
To: Dave Hansen <dave@linux.vnet.ibm.com>
Cc: akpm@linux-foundation.org, linux-mm@kvack.org,
       Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>,
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       linux-kernel@vger.kernel.org, haicheng.li@linux.intel.com,
       shaohui.zheng@linux.intel.com
Subject: Re: [RFC, 6/7] NUMA hotplug emulator
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On Thu, May 13, 2010 at 11:49:38AM -0700, Dave Hansen wrote:
> On Thu, 2010-05-13 at 11:15 -0700, Greg KH wrote:
> > >       echo "physical_address=0x40000000 numa_node=3" > memory/probe
> > > 
> > > I'd *GREATLY* prefer that over this new syntax.  The existing mechanism
> > > is obtuse enough, and the ',3' makes it more so.
> > > 
> > > We should have the code around to parse arguments like that, too, since
> > > we use it for the boot command-line.
> > 
> > If you are going to be doing something like this, please use configfs,
> > that is what it is designed for, not sysfs.
> 
> That's probably a really good point, especially since configfs didn't
> even exist when we made this 'probe' file thingy.  It never was a great
> fit for sysfs anyway.

Really?  configfs was added in 2.6.16, when was this probe file added?

thanks,

greg k-h