Re: Queued Spin Lock.

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On Tue, Aug 11, 2009 at 5:42 PM, Prasad Joshi<prasadjoshi124@xxxxxxxxx> wrote:
> Hi All,
>
> I am working on Porting of a windows device driver to Linux. Windows has a
> notion of Queued Spinlock. I could not understand how it is different than
> normal spinlock, the document says it is faster than a normal spinlock.
>
> If any one is having more information on Queued Spinlock, please share.
>
> Is there any equivalent Spinlock in Linux to Queued Spinlock?

Hm, I think this document explains a bit about queued spinlock:
http://msdn.microsoft.com/en-us/library/aa490204.aspx

AFAIK, Linux's spin lock doesn't guarantee ordering. So, the best
Linux alternative is just use normal spinlock.

NB: Perhaps you should question yourself first "do we really need
locking ordering in First Come First served here?"


-- 
regards,

Mulyadi Santosa
Freelance Linux trainer
blog: the-hydra.blogspot.com

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