1. 10 Mar, 2002 1 commit
    • Rusty Russell's avatar
      [PATCH] Futexes IV (Fast Lightweight Userspace Semaphores) · 882ad449
      Rusty Russell authored
      Fast user-space mutex implementation, allowing user space to do all
      of the normal handling, with a minimal fallback to kernel space for
      when there is lock contention.
      
      The kernel space implementation does not keep any per-lock data
      structures, but instead does a fast hash on the physical page and offset
      of the user-space lock when contended.  Thus no build/teardown costs, or
      any scalability costs wrt metadata.
      
      Updated syscall numbers for 2.5.6, and changed FUTEX_UP/DOWN definitions
      to be more logical for future expansions (eg.  r/w).
      882ad449
  2. 08 Mar, 2002 5 commits
  3. 07 Mar, 2002 34 commits