linux-kernel - Re: enable dynamic debug

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: <564CE8E6.8060903@hurleysoftware.com>
Date:	Wed, 18 Nov 2015 16:08:54 -0500
From:	Peter Hurley <peter@...leysoftware.com>
To:	Muni Sekhar <munisekharrms@...il.com>, linux-kernel@...r.kernel.org
Subject: Re: enable dynamic debug - doubt

On 11/17/2015 07:40 AM, Muni Sekhar wrote:
> [ Please keep me in CC as I'm not subscribed to the list]
> 
>  Hello,
> 
> The behaviour of dynamic debug prints are controlled via writing to a
> control file in the 'debugfs'
> filesystem(<debugfs>/dynamic_debug/control).

That's not the only method. You'll want to read
Documentation/dynamic-debug-howto.txt; specifically, "Debug Messages at
Module Initialization Time" for ways to enable dynamic debug messages at
module load time.

Regards,
Peter Hurley

> Here I would like to know what order should the echo(for eg: echo -n
> 'module sdhci +p' > /sys/kernel/debug/dynamic_debug/control) be
> applied in relation to the module load - before or after?


--
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/