Messages in this thread | | | Date | Thu, 02 Jul 2009 13:10:02 -0400 | From | Gregory Haskins <> | Subject | Re: Problem with wake_up using real-time scheduling |
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Zoltan Bus wrote: > Hello, > > I have a problem on kernel 2.6.26.3. I have a real-time task which > uses the select system call to poll my audio driver. The sleeping task > is waken up by wake_up() from an interrupt handler. > The problem is, that the wake_up() function sometimes does not wake > up the task if real-time priority is used. > > The try_to_wake_up() returns from the out_running section, because of the check > > if (p->se.on_rq) > goto out_running; > > There are no other tasks running when the poll function is called. > > Is this a known problem? Is it fixed somehow in newer versions? > Unfortunately I do not have the possibility to change the newest kernel version. > I am a newbie at linux, thank you very much for your help. > >
That *should* work fine. Can you post your code?
Regards, -Greg
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