Debug Logs

[Denis Kirjanov]

On Thu, Jan 20, 2011 at 3:04 PM, sugnan prabhu <sugnan.prabhu at gmail.com> wrote:
> Hi Mulyadi,
>
>       Finally after making some study on the dprintk source, i found that it
> can be enable by setting the config CONFIG_CPU_FREQ_DEBUG
>
>       http://codemonkey.org.uk/projects/cpufreq/
>
> But the above link say that i need to boot the kernel with cpufreq.debug=7,
> am not getting how to do that.

It is a sysctl variable.
sysctl -w debug.cpufreq.verbose=7

> for time being i have got it working by commenting the condition which
> checks for this variable in the kernel code.
>
> Thanks for your help.
>
>
> On Thu, Jan 20, 2011 at 11:11 AM, Mulyadi Santosa
> <mulyadi.santosa at gmail.com> wrote:
>>
>> Hi Sugnan :)
>>
>> On Thu, Jan 20, 2011 at 12:35, sugnan prabhu <sugnan.prabhu at gmail.com>
>> wrote:
>> >
>> > Sorry, what i meant is, am unable to find other logs which are being
>> > print
>> > using dprint,(ex: in fs/nfs/proc.c) i just wanted to know should i
>> > enable
>> > few flags in the kernel in order to enable those debug messages.
>>
>> We follow "not doing top posting" rule here, so please make it as your
>> habit  too  :)
>>
>> OK, about dprint, I absolutely have no idea. IMHO, you could find out
>> what dprint() really is e.g whether it is similar to printk or using
>> other mean such as netlink etc.
>>
>> Assuming it's using printk() or similar, find out which facility it
>> uses...from there...combined with syslog.conf (or syslog alike such as
>> rsyslog), you should easily parse the output. Enabling flag? maybe,
>> but I think no need to think about the for now.
>>
>> --
>> regards,
>>
>> Mulyadi Santosa
>> Freelance Linux trainer and consultant
>>
>> blog: the-hydra.blogspot.com
>> training: mulyaditraining.blogspot.com
>
>
>
> --
>
> Thanking You,
> Sugnan Prabhu S
> http://sugnanprabhu.blogspot.com/
>
> _______________________________________________
> Kernelnewbies mailing list
> Kernelnewbies at kernelnewbies.org
> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
>
>



-- 
Regards,
Denis