hi: 2011/1/6 Pavan Savoy <pavan_savoy@xxxxxxxx>: > On Thu, Jan 6, 2011 at 12:23 PM, loody <miloody@xxxxxxxxx> wrote: >> hi: >> >> 2011/1/6 Pavan Savoy <pavan_savoy@xxxxxxxx>: >>> On Thu, Jan 6, 2011 at 11:48 AM, loody <miloody@xxxxxxxxx> wrote: >>>> >>>> Dear all: >>>> I know complete will wake up the process who call wait_complete. >>>> Is there any methods I can use to measure how long from calling >>>> complete to the process that detect done=1? >>>> Regards, >>>> miloody >>> >>> returned value of wait_for_completion_timeout ? >> No. >> I want to measure the duration of complete to the time of wake up >> process who is pending on wait. > > Ah, Ok, Got it... > I would do a copy of jiffies before the complete and do a diff for > jiffies after the > wait_for_ ... > > I suppose there would be much more better/optimized way .... thank U :) why I ask so is I am porting kernel to other platform right now. and I found the time of getting complete is too long. What I mean is function A call wait_complete_timeout function B complete theoretically A will get complete and leave successfully but my platform A will told me that before timeout the complete is not got. Regards, miloody _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
