Re: profiling functions called in interrupt context

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 





On Tue, Sep 20, 2011 at 10:13 AM, Amit Nagal <helloin.amit@xxxxxxxxx> wrote:
On Tue, Sep 20, 2011 at 10:05 AM, rohan puri <rohan.puri15@xxxxxxxxx> wrote:
>
>
> On Tue, Sep 20, 2011 at 9:44 AM, Amit Nagal <helloin.amit@xxxxxxxxx> wrote:
>>
>> Hi ,
>>
>> i want to measure time spend in a callback function called from
>> interrupt context .
>> since the time spend will be in us / ns , what kernel apis can i use
>> to measure it ?
>>
>> also since i want to use it in interrupt context  , kernel time
>> measurement apis should not sleep .
>> i am using embedded arm target , and tools like OProfile  are not
>> available .
>>
>> can i be guided which  kernel time measurement apis shall i use to
>> measure time in a interrupt callback ?
>>
>> Regards
>> Amit Nagal
>
> For this you can make use of ftrace.
>
> Refer link http://www.mjmwired.net/kernel/Documentation/trace/ftrace.txt
>
> Regards,
> Rohan
>

Tools like ftrace are not available to me in my embedded arm target .
So i want to use kernel apis to deal with time measurement in
interrupt context .

Regards
Amit Nagal
Hi Amit,

I think ftrace can be enabled and used on arm arch.
Please Refer http://www.omappedia.org/wiki/Installing_and_Using_Ftrace

Regards,
Rohan
_______________________________________________
Kernelnewbies mailing list
Kernelnewbies@xxxxxxxxxxxxxxxxx
http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies

[Index of Archives]     [Newbies FAQ]     [Linux Kernel Mentors]     [Linux Kernel Development]     [IETF Annouce]     [Git]     [Networking]     [Security]     [Bugtraq]     [Yosemite]     [MIPS Linux]     [ARM Linux]     [Linux RAID]     [Linux SCSI]     [Linux ACPI]
  Powered by Linux