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