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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20160216235502.GA14565@kroah.com>
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