linux-kernel - Re: Idea for reducing sysfs memory usage

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Date:	Tue, 16 Feb 2016 15:55:02 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	Edward Cree <ec429@...tab.net>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: Idea for reducing sysfs memory usage

On Tue, Feb 16, 2016 at 11:46:49PM +0000, Edward Cree wrote:
> Sorry if this has been suggested before, but if so I couldn't find it.
> Short version: could a sysfs dir reference a list of default attributes
> rather than having to instantiate them all?

Shorter version, why do you think it is?  :)

Have you done some testing of the amount of memory that sysfs entries
consume and found any problems with it?  Remember, a s390 system with
20000 disks works just fine with a very little memory footprint, a lot
of work has gone into making sysfs consume tiny amounts of memory.

thanks,

greg k-h