Messages in this thread | | | Date | Sun, 8 Jan 2006 19:23:01 +1100 | From | Anton Blanchard <> | Subject | Re: PowerPC fastpaths for mutex subsystem |
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> What's "unfair"? Mutexes are FIFO, as are x86 semaphores.
The ppc64 semaphores dont force everyone into the slow path under contention. So you could drop and pick up the semaphore even with someone waiting. I thought thats how the new mutex code worked.
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