C- displaying CPU info using kernel module

Question

I've recently learned about kernel modules and I was thinking on how to create one that does what cat /proc/cpuinfo does.

Is it possible to do this without opening/reading the file directly (fread)?

Thanks in advance!

Could you try to prepare some example(s) and ask more specific question please? — rudolf_franek
– rudolf_franek, Commented Oct 10, 2018 at 13:42
Possible duplicate question. But can't you get the cpu info directly from the processor itself? — Weather Vane
– Weather Vane, Commented Oct 10, 2018 at 13:52

Nikita Yushchenko · Accepted Answer · 2018-10-10 20:37:14Z

0

/proc/cpuinfo output is generated by kernel code; you can check that code and do the same in your kernel module.

Code is located in fs/proc/cpuinfo.c

It references 'cpuinfo_op' object that is provided by architecture-dependent code, try 'grep cpuinfo_op arch' from toplevel directory of kernel source to locate it.

answered Oct 10, 2018 at 20:37

Nikita Yushchenko

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