linux-kernel - Re: [RFC][PATCH v3 2/4] printk: do not console_cont

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:	Thu, 11 Feb 2016 17:03:03 +0900
From:	Sergey Senozhatsky <sergey.senozhatsky@...il.com>
To:	Petr Mladek <pmladek@...e.com>
Cc:	Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jan Kara <jack@...e.com>, Tejun Heo <tj@...nel.org>,
	Kyle McMartin <kyle@...nel.org>,
	Dave Jones <davej@...emonkey.org.uk>,
	Calvin Owens <calvinowens@...com>,
	linux-kernel@...r.kernel.org,
	Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>
Subject: Re: [RFC][PATCH v3 2/4] printk: do not console_cont_flush() on every
 jump to again

Hello Petr,

On (02/10/16 17:58), Petr Mladek wrote:
> On Sat 2016-01-23 17:15:11, Sergey Senozhatsky wrote:
> > Every jump to `again' label will call console_cont_flush(),
> > which is not really something big -- it just adds one extra
> > raw_spin_lock_irqsave/raw_spin_unlock_irqrestore. However, to
> > keep the previous behaviour we can call console_cont_flush()
> > only when `retry' is false -- which happens once, all jumps
> > to `again' label have `retry' set to true.
> 
> The patch is correct and restores the original behavior, so
> 
> Reviewed-by: Petr Mladek <pmladek@...e.com>
> 
> But I would personally omit it. We see the cont buffer earlier
> without this patch.

ok.

> PS: I will review the other patches tomorrow.

thanks.

	-ss