Re: Accessing a kernel module function from kernel scheduler

["Mulyadi Santosa" <mulyadi.santosa@xxxxxxxxx>]

Hi...


On Fri, Feb 29, 2008 at 2:29 PM, David Embid <davidembid@xxxxxxxxx> wrote:
>
>
> Hi,
>
> i have been developing a little module to monitoring the use of CPU for some
> processes. For this, I need to handle the moment when the scheduler switch
> the processes. My problem is that I don't know how can I access the handling
> function (contained on my kernel module) from the kernel scheduler
> (sched.c). I have tried with a function callback. My module overwrite a
> function pointer used by the kernel to acces the handler when the module is
> loaded. This solution seems to work properly and the function is called
> every switch made by the scheduler. The problem is that the variables used
> on the function have different memory direction when the function is called
> by the callback on the kernel and the direction when the variable is used on
> other function in the module.


First, what do you mean by "direction"?

Second...seems like you can use kprobe and made it to hook the entry
point of schedule().

regards,

Mulyadi.

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