Re: How to get the maximum output from dmesg command

[DervishD]

    Hi Srinivas :)

 * Srinivas G. <srinivasg@xxxxxxxxxxxxxxxxxxxxx> 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@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/