Messages in this thread | | | Date | Mon, 14 Feb 2005 17:19:50 +0100 | From | DervishD <> | Subject | Re: How to get the maximum output from dmesg command |
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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... - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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