Re: [patch 0/9] mutex subsystem, -V4

[Russell King]

On Fri, Dec 23, 2005 at 06:51:18AM -0800, Andrew Morton wrote:
> Nicolas Pitre <nico@xxxxxxx> wrote:
> > How can't you get the fact that semaphores could _never_ be as simple as 
> > mutexes?  This is a theoritical impossibility, which maybe turns out not 
> > to be so true on x86, but which is damn true on ARM where the fast path 
> > (the common case of a mutex) is significantly more efficient.
> 
> I did notice your comments.  I'll grant that mutexes will save some tens of
> fastpath cycles on one minor architecture.  Sorry, but that doesn't seem
> very important.

Wow.

-- 
Russell King
 Linux kernel    2.6 ARM Linux   - http://www.arm.linux.org.uk/
 maintainer of:  2.6 Serial core
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