linux-kernel - Re: [PATCH] printk: Revert the buffered-printk() changes for now

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]

Date:	Mon, 25 Jun 2012 09:40:33 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	Ingo Molnar <mingo@...nel.org>, Kay Sievers <kay@...y.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Fengguang Wu <fengguang.wu@...el.com>,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: [PATCH] printk: Revert the buffered-printk() changes for now

On Mon, Jun 25, 2012 at 10:48:54AM -0400, Steven Rostedt wrote:
> On Mon, 2012-06-25 at 16:07 +0200, Ingo Molnar wrote:
> 
> > System logging is an arguably secondary role, and it should not 
> > degrade printk()s primary role.
> 
> I would argue that printk() should not play the role of normal system
> logging. It's main role should be for boot up and crashes. If devices
> need to log information to userspace, it should really use some other
> means. What was /sys made for anyway?

Specifically not for logging.  See the very old discussions of this a
long time ago (back in the 2.5 days), if you are curious.

printk() is the best thing we have for logging as everyone uses it and
the information in it is exactly what userspace wants to know about.
Because of that, why wouldn't we use it?

Anyway, your "never buffer printk data" patch looks like the right
solution here, I'm guessing you are going to respin it based on the
feedback so far, right?

thanks,

greg k-h
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/