1. 485832a [PATCH] x86_64: Use int operations in spinlocks to support more than 128 CPUs spinning. by Andi Kleen · 19 years ago
  2. fb1c8f9 [PATCH] spinlock consolidation by Ingo Molnar · 19 years ago
  3. 1da177e Linux-2.6.12-rc2 by Linus Torvalds · 20 years ago