Actually the monitoring is only a first step. With the monitored data the module tries to manage the resources. The task monitored have a budget linked so when they run more time than their budget a handling function is called. So I need the function on the module to be accessed form the kernel linux in some way.
I forget specifying I am working with Kernel 2.6 Thanks for answering, Regards 2008/2/29, Steve <[EMAIL PROTECTED]>: > > Hi David, > > On Fri 29/02/08 12:59 PM , "David Embid" [EMAIL PROTECTED] sent: > > 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. > > Can someone give me some advice? > > Well, I am a kernel n00b myself, but if you are interested in just > monitoring and are not really doing this as an exercise to learn kernel > programming, I think susing systemtap would be ideal for something like > this. > > http://sourceware.org/systemtap/ > http://sourceware.org/systemtap/documentation.html > > Could someone here possibly post a stap script to do what David needs ? > > regards, > - steve > > >
