Debug Logs

sugnan prabhu sugnan.prabhu at
Thu Jan 20 07:04:28 EST 2011

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

But the above link say that i need to boot the kernel with cpufreq.debug=7,
am not getting how to do that.

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
> wrote:

> Hi Sugnan :)
> On Thu, Jan 20, 2011 at 12:35, sugnan prabhu <sugnan.prabhu at>
> 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:
> training:


Thanking You,
Sugnan Prabhu S
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