Hi Joel, It works by specifying ccflags-y += -DDEBUG in the Makefile. Thank you for the info!!!! Cheers, Wenda Ni, Ph.D. On Mon, Oct 17, 2016 at 7:48 PM, Joel Fernandes <agnel.joel@gmail.com> wrote:
Hi Wenda,
pr_debug needs you to define the DEBUG macro to activate it.
Check: http://stackoverflow.com/questions/28936199/pr-debug-not-giving-any-output
and the kernel docs, https://www.kernel.org/doc/local/pr_debug.txt
Joel
On Mon, Oct 17, 2016 at 4:17 PM, Wenda Ni <wonda.ni@gmail.com> wrote:
Dear all,
I am working on a kernel module that incorporate both pr_debug and pr_warn. I would like to see pr_debug messages from dmesg.
What I followed is to specify kernel parameter by saying "loglevel=7". This can be seen confirmed from /proc/cmdline. But still, I donot get pr_debug level messages either from dmesg or from /var/log/messages. I also tried echo 7 > /proc/sys/kernel/printk. It does not return what I expect, either.
Let me know what I am missing. Thank you very much in advance.
Cheers,
Wenda Ni, Ph.D.
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