Hi Lucas, Please find my response inline. > Goal: find drivers that I could start improving ( understand, develop, > test , submit ) > How : If my machine uses a driver, I can read the code, modify and > test in my machine > Suppose you want to improve/change a basic driver you are using for example XFS filesystem. /lib/modules/<kernel_version>/points to the location of the source code On my Ubuntu 14.04 machine, ssinha@ssinha-Latitude-E6440:~$ ls -l /lib/modules/`uname -r`/ total 3852 lrwxrwxrwx 1 root root 40 Sep 23 04:03 build -> /usr/src/linux-headers-3.13.0-37-generic so the location of the source code is /usr/src/linux-headers-3.13.0-37-generic. Now go to the fs folder here to get the source code of xfs. ssinha@ssinha-Latitude-E6440:~$ ls -l /usr/src/linux-headers-3.13.0-37-generic/fs/xfs total 8 -rw-r--r-- 1 root root 3839 Jan 20 2014 Kconfig -rw-r--r-- 1 root root 3027 Jan 20 2014 Makefile Now what I find is that I have only headers not the entire source code. So the distros don't generally ship with the entire source code. You can get the source code of your running kernel by either the source packages(kernel-src-rpms or kernel-src-deb) of the distros or you can get tar ball of your running kernel from the kernel.org. > So, if I'm able to see where is located the source for a driver that > my machine uses, I can modify and test. > Now when you have the source code, change the driver, make sure its enabled in the kernel .config driver, build the entire kernel and boot into your modified kernel. (If your driver is standalone and not dependent on other drivers, you can build its seprately and insmod it without having to build the entire kernel tree.) Hope that helps. Regards, Saket Sinha On Wed, Dec 10, 2014 at 2:23 AM, Davide Gianforte <davide@xxxxxxxxxxxxxx> wrote: > In data martedì 9/12/2014 18:45:59, Lucas Tanure ha scritto: >> Hi, >> >> How do I list where are the modules that I'm using inside kernel ? >> >> Goal: find drivers that I could start improving ( understand, develop, >> test , submit ) >> How : If my machine uses a driver, I can read the code, modify and >> test in my machine >> >> So, if I'm able to see where is located the source for a driver that >> my machine uses, I can modify and test. >> >> Ideas ? >> >> Thanks > > 'lsmod' and 'lspci -k' show your loaded modules and which module is handling a device. > > 'find /lib/modules/$(uname -r)/kernel $module_name' show you where the module is located; /lib/modules/<kernel_version>/kernel folder tree is equal to the source tree. > > Dave > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies@xxxxxxxxxxxxxxxxx > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
