1. 52fdd08 [PATCH] unify x86/x86-64 semaphore code by Benjamin LaHaise · 19 years ago[Renamed (93%) from arch/x86_64/kernel/semaphore.c]
  2. 1da177e Linux-2.6.12-rc2 by Linus Torvalds · 20 years ago v2.6.12-rc2