• Linus Torvalds's avatar
    Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 42e1b14b
    Linus Torvalds authored
    Pull locking updates from Ingo Molnar:
     "The main changes in this cycle were:
    
       - Implement wraparound-safe refcount_t and kref_t types based on
         generic atomic primitives (Peter Zijlstra)
    
       - Improve and fix the ww_mutex code (Nicolai Hähnle)
    
       - Add self-tests to the ww_mutex code (Chris Wilson)
    
       - Optimize percpu-rwsems with the 'rcuwait' mechanism (Davidlohr
         Bueso)
    
       - Micro-optimize the current-task logic all around the core kernel
         (Davidlohr Bueso)
    
       - Tidy up after recent optimizations: remove stale code and APIs,
         clean up the code (Waiman Long)
    
       - ... plus misc fixes, updates and cleanups"
    
    * 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (50 commits)
      fork: Fix task_struct alignment
      locking/spinlock/debug: Remove spinlock lockup detection code
      lockdep: Fix incorrect condition to print bug msgs for MAX_LOCKDEP_CHAIN_HLOCKS
      lkdtm: Convert to refcount_t testing
      kref: Implement 'struct kref' using refcount_t
      refcount_t: Introduce a special purpose refcount type
      sched/wake_q: Clarify queue reinit comment
      sched/wait, rcuwait: Fix typo in comment
      locking/mutex: Fix lockdep_assert_held() fail
      locking/rtmutex: Flip unlikely() branch to likely() in __rt_mutex_slowlock()
      locking/rwsem: Reinit wake_q after use
      locking/rwsem: Remove unnecessary atomic_long_t casts
      jump_labels: Move header guard #endif down where it belongs
      locking/atomic, kref: Implement kref_put_lock()
      locking/ww_mutex: Turn off __must_check for now
      locking/atomic, kref: Avoid more abuse
      locking/atomic, kref: Use kref_get_unless_zero() more
      locking/atomic, kref: Kill kref_sub()
      locking/atomic, kref: Add kref_read()
      locking/atomic, kref: Add KREF_INIT()
      ...
    42e1b14b
debugfs.c 7.09 KB