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
>
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