Subject: [patch 00/23] Atomic operations updates: add cmpxchg_local
Newsgroups: gmane.linux.kernel
Date: 2007-08-12 14:54:34 GMT (1 year, 46 weeks, 4 days, 21 hours and 36 minutes ago)
Hi Andrew, I have been asked for a cmpxchg_local implementation by Christoph Lameter so he can use it to accelerate the slub allocator. On some architectures, where cmpxchg is nothing more that a simple save/restore interrupts surrounding the cmpxchg non atomic ops, I remove the code and make them use the new "generic" version. cmpxchg_local and cmpxchg64_local are made available on all architectures in these patches. They use the best primitive known, either an atomic operation or save/restore interrupts. Mathieu -- Mathieu Desnoyers Computer Engineering Ph.D. Student, Ecole Polytechnique de Montreal OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68