You may want to look at this free course on kernel programming:
http://crashcourse.ca/introduction-linux-kernel-programming/introduction-
linux-kernel-programming
I believe that the entire course is free now (even though it mentions
costing $39).

It has a section on creating proc filesystem entries.

On Wed, Aug 24, 2016 at 4:39 AM, Louie Lu [off-list ref] wrote:

2016-08-24 18:23 GMT+08:00 Nikolay Borisov [off-list ref]:

quoted

On 08/24/2016 01:18 PM, Louie Lu wrote:

quoted

Hi everyone,

I'm now reading *Unreliable Guide To Locking* which came from
kernelnewbies.org (https://kernelnewbies.org/Documents/Kernel-Docbooks)

What I want to do is trying run the code that in this doc from 7.1 All
In User Context.

In my knowing for kernel programming,
I'll need to compile the code to something like
`main.ko` then insert into kernel space using `insmod`.

Here is the GitHub that I'm doing PoC code:
https://github.com/grapherd/unreliable_guide_to_locking

My question is,
Is my knowing right?
and, how can I use the function in main.ko (e.g. cache_add).
I'm using these function by test.ko, is that a normal way to use it?

in this doc have mention, there have hardirq, softirq.
How can I test it from these irq method?

You have to create some sort of an interface which utilizes those kernel
function. That might be IOCTL or procfiles or debugfs or any other
number of UM<=>KM interfaces.

Thanks for reply, I'm now looking for procfs example,

like this: http://www.tldp.org/LDP/lkmpg/2.6/html/x710.html
or this: https://kernelnewbies.org/Documents/Kernel-Docbooks?
action=AttachFile&do=get&target=procfs-guide_2.6.29.pdf

But it seems that all this tutorial were deprecate,
since 3.10 change for proc_create_entry()

Are there any resource for procfs to leran?

thanks!.

Louie Lu.

quoted

quoted

Thanks!
Louie Lu.

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