1. 02 3月, 2007 1 次提交
    • H
      IB/ehca: Fix sync between completion handler and destroy cq · 31726798
      Hoang-Nam Nguyen 提交于
      This patch fixes two issues reported by Roland Dreier and Christoph Hellwig:
      
      - Mismatched sync/locking between completion handler and destroy cq We
        introduced a counter nr_events per cq to track number of irq events
        seen. This counter is incremented when an event queue entry is seen
        and decremented after completion handler has been called regardless
        if scaling code is active or not. Note that nr_callbacks tracks
        number of events assigned to a cpu and both counters can potentially
        diverge.
      
        The sync between running completion handler and destroy cq is done
        by using the global spin lock ehca_cq_idr_lock.
      
      - Replace yield by wait_event on the counter above to become zero.
      Signed-off-by: NHoang-Nam Nguyen <hnguyen@de.ibm.com>
      Signed-off-by: NRoland Dreier <rolandd@cisco.com>
      31726798
  2. 27 2月, 2007 39 次提交