spinlocks

[Benjamin Herrenschmidt]

On Tue, 2004-01-06 at 05:07, jschopp at austin.ibm.com wrote:
> Based on past experience putting or instructins in locking routines I
> think it is worth doing.  The performance hit isn't from the execution of
> the instructions but from the extra space they take up.  It is not a huge
> difference, but it is measurable.  Spinlocks are called enough that
> anything measurable should be optimized.  Amdahl's law and all.

I tend to think that our spinlocks are so big nowadays that it would
probably be worth un-inlining them....

Ben.


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