Thread (8 messages) 8 messages, 3 authors, 2011-01-08

Questions about complete

From: loody <hidden>
Date: 2011-01-06 08:05:10

hi:

2011/1/6 Pavan Savoy [off-list ref]:
On Thu, Jan 6, 2011 at 12:23 PM, loody [off-list ref] wrote:
quoted
hi:

2011/1/6 Pavan Savoy [off-list ref]:
quoted
On Thu, Jan 6, 2011 at 11:48 AM, loody [off-list ref] wrote:
quoted
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
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