[pso] work_struct::data

[Alexandru Mosoi]

am demonstrat (prin incercari) ca data trebuie sa fie 0 ca se se apeleze
handlerul. de curiozitate, am voi sa schimb campul private din bio-ul
primit?

2008/5/15 Alexandru Mosoi <brtzsnr at gmail.com>:

> grhhh. de unde invechit? l-am luat din LDD3. asa... plus ca mi se pare ceva
> gresit in laborator. work_struct este defapt o lista inlantuita si mereu (in
> laborator) se pune in coada exact acelasi element (acelasi pointer). eu am
> alocat workqueue-ul si l-am eliberat in handler (m-am uitat in doc... err...
> surse si e corect ce fac). problema mea e cum folosesc data ala? ca mi-am
> pierdut deja 2 ore de somn incercand sa-mi dau seama treaba cu el
> (atribuirea lui dupa INIT/PREPARE_WORK face ca handlerul sa nu fie chemat).
>
> 2008/5/15 Razvan Deaconescu <razvand at cs.pub.ro>:
>
> On Wed, 2008-05-14 at 23:51 +0300, Alexandru Mosoi wrote:
>> > incerc sa folosesc membrul data pentru a transmite pointerul la
>> > structura bio astfel:
>> >
>> > work_handler:
>> >
>> >     struct bio* bio =
>> >         (struct bio *)atomic_long_read(&work->data);
>> >
>> >     printk(KERN_ALERT "handler bio = %p\n", bio);
>> >
>> >
>> > bio_request
>> >
>> >     printk(KERN_ALERT "request bio = %p\n", bio);
>> >
>> >     atomic_long_set(&device->work.data, (long)bio);
>> >     PREPARE_WORK(&device->work, ssr_work_handler);
>> >     schedule_work(&device->work);
>> >
>> >
>> > nu stiu ce gresesc, dar cei doi pointeri sunt distincti.
>>
>> Hmmm ... de unde ai luat exemplele de folosire a work-queue-urilor?
>> API-ul folosit de tine este invechit. Te-ai uitat pe solutiile
>> laboratorului 7 [1] (exercitiul 4) pentru un model de folosire a
>> work-struct-urilor? Sau chiar in laborator[2]?
>>
>> Razvan
>>
>> [1] http://cs.pub.ro/~pso/wiki/images/4/41/Lab7-tasks-sol.zip<http://cs.pub.ro/%7Epso/wiki/images/4/41/Lab7-tasks-sol.zip>
>> [2]
>> http://cs.pub.ro/~pso/index.php?section=Laboratoare&file=07.%20Actiuni%20amanabile#Workqueues<http://cs.pub.ro/%7Epso/index.php?section=Laboratoare&file=07.%20Actiuni%20amanabile#Workqueues>
>>
>>
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>
>
>
> --
> Alexandru Moşoi
> http://alexandru.mosoi.googlepages.com
>
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-- 
Alexandru Moşoi
http://alexandru.mosoi.googlepages.com

Please avoid sending me Word or PowerPoint attachments.
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