Hi Pintu, which 'printk-level' are you using? Try something like 'printk(KERN_DEBUG ...' Further informations can be found here: http://www.xml.com/ldd/chapter/book/ch04.html have fun ... TR On Mon, 2008-07-07 at 11:23 +0530, Pintu Agarwal wrote: > Hi, > > I have written a simple char driver(mychar) for linux 2.6.22 kernel. > I have split my driver code into 2 C files. > - mychar.c (main file where __init is present) > - test1.c (some user defined function) > > I am using Makefile for compilation. > My makefile looks like this - > ------------------------------------------------------------ > EXTRA_CFLAGS += -I. -ITEST > > obj-m += mychar.o > mychar-objs += TEST/test1.o > > KDIR := /lib/modules/$(shell uname -r)/build > PWD := $(shell pwd) > > all: > $(MAKE) -C $(KDIR) M=$(PWD) modules > > clean: > $(MAKE) -C $(KDIR) M=$(PWD) clean > --------------------------------------------------------------- > > I am interested in building only mychar.ko and no the whole kernel. > I am doing my development on Ubuntu 7.10 with kernel version > 2.6.22-14-generic > > Although this Makefile works and I could able to generate "mychar.ko". > Also when I do "insmod mychar.ko" the module installs successfully, > and I could > see "mychar" in "lsmod" output. > I have added some printk in my module_init function but after doing > insmod I am not able to see any output in /var/log/messages > > If I put everything in single C file(only mychar.c), I could able to > see all the output in /var/log/messages. > > Please let me know what am I doing wrong while including the 2 C files > and how should the makefile be modified. > ( I have referred Documentation/kbuild makefiles.txt for creating my > makefile) > > > Thanks, Regards > Pintu > > SASKEN BUSINESS DISCLAIMER > ------------------------- > This message may contain confidential, proprietary or legally privileged information. In > case you are not the original intended Recipient of the message, you must not, directly or > indirectly, use, Disclose, distribute, print, or copy any part of this message and you are > requested to delete it and inform the sender. Any views expressed in this message are > those of the individual sender unless otherwise stated. Nothing contained in this message > shall be construed as an offer or acceptance of any offer by Sasken Communication > Technologies Limited ("Sasken") unless sent with that express intent and with due > authority of Sasken. Sasken has taken enough precautions to prevent the spread of > viruses. However the company accepts no liability for any damage caused by any virus > transmitted by this email -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
