~Sharwan
On Thu, Apr 9, 2009 at 2:48 PM, Sukanto Ghosh <sukanto.cse.iitb@xxxxxxxxx> wrote:
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
>>
>> --
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>>
>>
>
>
>
> --
> Pradeep
>
--
Regards,
Sukanto Ghosh
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