IABSD.fr/src

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• Author : mpi
  Date : 2025-05-21 09:04:00
  Hash : 8e23f399
  Message : Improve mtx_enter() for machines with a huge number of CPUs. - Always read the value just before issuing an atomic operation to avoid locking the cache line. - Use an exponential backoff for the busy loop when waiting for a contended lock. Prevent hangs on Ampere Altra with highly contended mutexes. ok kettenis@, dlg@