Hi Pradeep, Seems like it might serve my purpose ... a very useful one .. But I didn't find how to configure it in the kernel ... I mean the kernel config option or what menu in 'make menuconfig' Thanks and Regards, Sukanto On Wed, Apr 8, 2009 at 5:56 PM, pradeep singh <pradeep.rautela@xxxxxxxxx> wrote: > Not sure, if it will help you or not but did you look at ftrace? > > Thanks, > --Pradeep > On Wed, Apr 8, 2009 at 3:29 PM, Sukanto Ghosh > <sukanto.cse.iitb@xxxxxxxxx> wrote: >> Hi, >> >> I want to log the following activities with timestamps - *as precisely >> as possible* : >> i. enqueuing of a process >> ii. dequeuing of a process >> iii. a process starts executing on cpu >> iv. a process is preempted/yeilds the cpu >> >> What is the best (precise, efficient and easy) way of doing so ? >> >> >> >> Currently I am doing the following: >> >> I am using jprobes for enqueue_entity and dequeue_entity functions, to >> log the events. >> For logging context switches I have used kprobes to put a printk >> statement in schedule() function of kernel/sched.c before the >> statement that increments the context switch counter of the runqueue. >> >> >> >> -- >> Regards, >> Sukanto Ghosh >> >> -- >> To unsubscribe from this list: send an email with >> "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx >> Please read the FAQ at http://kernelnewbies.org/FAQ >> >> > > > > -- > Pradeep > -- Regards, Sukanto Ghosh -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
