Questions about complete

loody miloody at
Thu Jan 6 03:05:10 EST 2011


2011/1/6 Pavan Savoy <pavan_savoy at>:
> On Thu, Jan 6, 2011 at 12:23 PM, loody <miloody at> wrote:
>> hi:
>> 2011/1/6 Pavan Savoy <pavan_savoy at>:
>>> On Thu, Jan 6, 2011 at 11:48 AM, loody <miloody at> 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.


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