sysfs entry is not created for the module parameter of loadable kernel module

harikrishna.s

Hi,
I'm using the kernel image from Linus mainline and the rootfs generated from the buildroot. Also, I have added my module in the "buildroot/package/mymodule".
In the source file of "mymodule", have added the module parameter as mentioned below :
module_param(m_Argument, int, S_IRUSR | S_IWUSR);

This module parameter is not created in the sysfs.
But I'm able to load the module with the argument but I would like to see the entry in sysfs as well.

Can anyone please check this and let me know the suggestion ?

Build steps are as below :

• Built the rootfs from buildroot
• Added "mymodule" and then again built the rootfs (this time it was incremental build)

Thank you.

harikrishna.s

I would like to add to the above, just tried even by cleaning "make clean" and built rootfs again. Still the sysfs entry is not created for the module parameter. I can see sysfs mounted.
I'm able to load the module with argument & remove the module.

harikrishna.s

Sorry for the confusion, sysfs entry got created after the module loading, I was checking before the module load. Please ignore this.