Communication between kernel and kernel module
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- Subject: Communication between kernel and kernel module
- From: "drewd77.gm" <drewd77.gm@xxxxxxxxx>
- Date: Tue, 22 May 2012 11:18:32 -0700
Is there any way to call a function defined in a kernel module from within the kernel proper?
Here's what I'm trying to do:
I'm trying to keep track of when and for how long a process is being executed on the processor, i.e. I need to know when context switches occur.
There is a function called context_switch() in linux/kernel/sched/core.c that is called whenever a context switch happens. I would like to call a function in a kernel module I've written from within context_switch() and pass some data to it.
I've seen how to communicate between user space and kernel space, such as using a file in /dev or using system calls, but not how to communicate within the kernel itself.
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