This is the first in a series of articles aimed at the beginning kernel programmer, designed to lead the kernel newbie through the basics of writing and compiling their first kernel module, and getting increasingly sophisticated from there.
I want to add a particular new system call in the linux kernel 3.2.x but as a loadable kernel module.(as i don't want to recompile the kernel again and again)
I read through many posts on internet and also on SO, and got an impression that implementing System calls as a loadable module is not possible and some places it is said to be possible.
I am really confused now.
I'm trying to find the kernel address space where my loadable kernel module is relocated by insmod.
I came to know that by using the -m, -O switches while insmod'ing the module, we can only see the symbol table and the executable's sections' addresses from the view-point of the module and not their relocated addresses, as that process of relocation is carried out when we do an insmod.
Can anyone
I've attempted to install drivers for an FPGA device, but require that I remove the usbserial module. This happens to be impossible because usbserial is a built-in module. It was suggested that I compile a new kernel to make usbserial dynamically loadable and unloadable.
I'm now trying to compile a custom kernel w/ Fedora.
I've built a kernel with loadable module support for various reasons, one of them the possibility to compile modules and load them without rebooting. This is supposed to be useful when I need a module that I had not enabled in the kernel config.
Now, with drivers like nouveau, it's as easy as going to the source directory, and running make M=drivers/gpu/drm/nouveau.
LunaVorax wrote:Why in the world can't this be simple?I actually tried what I posted before to make sure it works...But I can't really read the errors you posted since I don't speak that language...
As for the strange looking Makefile (inside the directory where I have my module code), the Makefile earlier looked like it normally does:obj−m += hello−1.o all:... [by aijazbaig1]
This article shows how to rebuild only a single module that comes with the main kernel tree for folks that neither need nor want to rebuild the whole kernel. If you want to build an out-of-tree module, than that module's documentation is probably the best starting point.
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