Hi Wangyubin, There is a *reason* why I decided to give you a helping hand my dear, "I" had a very hard time with that task-01 but it did help me immensely to begin to understand how things work and are done in the kernel. I do not want anyone else to waste time if we can get newcomers up to a certain level of competency where they can contribute to the kernel this world will be a much better place. Run checkpatch.pl and try to resolve all errors and warnings before you sumbit as else little penguin will say uh-uh sorry try again ! Checkpatch is your friend and so is Google so use them :) On Mon, Mar 24, 2014 at 10:42 PM, wangyubin <harry198344@xxxxxxxxx> wrote: > Hi, Aruna > > Thanks for your answer! > > I used printk like this in the previous submit. > printk(KERN_ALERT "Hello World !"); > > I will change "KERN_ALERT" to "KERN_DEBUG" and try to submit again! > > also thanks for Masood Mehmood and Parinay Kondekar's help! > > Best Regards! > wangyubin > > On 03/25/2014 10:16 AM, Aruna Hewapathirane wrote: >> Hi Wangyubin, >> >> The log level you require is KERN_DEBUG ... >> >> But when you run checkpatch.pl on your *.c file it will say: >> >> WARNING: Prefer netdev_dbg(netdev, ... then dev_dbg(dev, ... then >> pr_debug(... to printk(KERN_DEBUG ... >> >> So replacing printk(KERN_DEBUG ... with pr_debug will resolve this. >> >> You can find the log files in /var/log and you can list them with ls /var/log. >> >> The latest kernel I found has the debug and messages logs disabled by >> default. You can easily rectify this by editing >> /etc/rsyslog.d/50-default.conf. And un-commenting the section : >> >> #*.=debug;\ >> # auth,authpriv.none;\ >> # news.none;mail.none -/var/log/debug >> #*.=info;*.=notice;*.=warn;\ >> # auth,authpriv.none;\ >> # cron,daemon.none;\ >> # mail,news.none -/var/log/messages >> >> This will give you back the debug and message logs. >> >> Good luck ! >> >> Aruna >> >> >> >> >> >> >> On Mon, Mar 24, 2014 at 9:28 PM, wangyubin <harry198344@xxxxxxxxx> wrote: >>> Hello, >>> I have dive into the eudyptula-challenge, but when I submit my result for task 01. >>> I received a reply below: >>>> Please print to the kernel debug log level. >>> I have sended module(c file), Makefile, and dmesg output for load/unload the module. >>> Could anyone to tell me what does this message mean? >>> Thanks a lot! >>> >>> -- >>> Best Regards! >>> wangyubin >>> >>> >>> _______________________________________________ >>> Kernelnewbies mailing list >>> Kernelnewbies@xxxxxxxxxxxxxxxxx >>> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies@xxxxxxxxxxxxxxxxx > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
