spin_lock and scheduler confusion

[Viral Mehta]

Hi,
________________________________________
From: Dave Hylands [dhylands at gmail.com]
Subject: Re: spin_lock and scheduler confusion

>> I guess timeslice expire case is not as same as preemption. Or may be I am
>> terribly wrong.
>
>You shouldn't be holding  a spinlock for periods of time approaching
>the length of a timeslice. The timer interrupt is what determines the
>end of a timeslice. No timer interrupt, no end of a timeslice.
>Preemption is also triggered by the timer interrupt, or by releasing a
>resource that a higher priority task is waiting for.

thanks,
it is much clear now.

>Dave Hylands

Thanks,
Viral

http://groups.google.com/group/fundamental-discussion?hl=en

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