Re: [PATCH 0/4] De-couple sysfs memory directories from memory sections

On 01/10/2011 12:44 PM, Greg KH wrote:

On Mon, Jan 10, 2011 at 12:08:56PM -0600, Nathan Fontenot wrote:

quoted

This is a re-send of the remaining patches that did not make it
into the last kernel release for de-coupling sysfs memory
directories from memory sections.  The first three patches of the
previous set went in, and this is the remaining patches that
need to be applied.

Well, it's a bit late right now, as we are merging stuff that is already
in our trees, and we are busy with that, so this is likely to be ignored
until after .38-rc1 is out.

So, care to resend this after .38-rc1 is out so people can pay attention
to it?

I was afraid of this. I didn't get a chance to get it out sooner but thought
I would send it out anyway.

quoted

The root of this issue is in sysfs directory creation. Every time
a directory is created a string compare is done against all sibling
directories to ensure we do not create duplicates.  The list of
directory nodes in sysfs is kept as an unsorted list which results
in this being an exponentially longer operation as the number of
directories are created.

Are you sure this is still an issue?  I thought we solved this last
kernel or so with a simple patch?

I'll go back and look at this again.

thanks,
-Nathan