From: DervishD <lkml@dervishd.net>
To: "Srinivas G." <srinivasg@esntechnologies.co.in>
Cc: linux-kernel-Mailing-list <linux-kernel@vger.kernel.org>
Subject: Re: How to get the maximum output from dmesg command
Date: Mon, 14 Feb 2005 17:19:50 +0100 [thread overview]
Message-ID: <20050214161950.GA10253@DervishD> (raw)
In-Reply-To: <4EE0CBA31942E547B99B3D4BFAB3481134E2AE@mail.esn.co.in>
Hi Srinivas :)
* Srinivas G. <srinivasg@esntechnologies.co.in> dixit:
> How to get maximum output from dmesg command?
> I am unable to see all my debug messages after loading my driver.
> I think there is a restriction in displaying the dmesg output.
> I saw in printk.c file under source directory. There I found LOG_BUF_LEN
> is 16384.
You can change this value using the configuration, namely
CONFIG_LOG_BUF_SHIFT. The value you store here is used to determine
LOG_BUF_LEN=2^CONFIG_LOG_BUF_SHIFT. You seem to have '14' as the
value of CONFIG_LOG_BUF_SHIFT. Increase it to 16 and you will have 4
times the current length for the dmesg buffer.
I'm assuming you're using a more or less recent 2.4.x kernel. I
suppose that the same is applicable to 2.6.x kernels.
Raúl Núñez de Arenas Coronado
--
Linux Registered User 88736
http://www.dervishd.net & http://www.pleyades.net/
It's my PC and I'll cry if I want to...
next prev parent reply other threads:[~2005-02-14 16:18 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-02-14 15:25 How to get the maximum output from dmesg command Srinivas G.
2005-02-14 16:19 ` DervishD [this message]
2005-02-14 16:48 ` Rogério Brito
2005-02-14 17:29 ` DervishD
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