tree 3d5b7cfdfcfe80268bf47d84404d2d9a2034cc65
parent 9844b71baa60270110eabaa9589d3260443d1a71
author Joachim Fenkes <fenkes@de.ibm.com> 1183987839 +0200
committer Roland Dreier <rolandd@cisco.com> 1184037147 -0700

IB/ehca: Refactor sync between completions and destroy_cq using atomic_t

- ehca_cq.nr_events is made an atomic_t, eliminating a lot of locking.
- The CQ is removed from the CQ idr first now to make sure no more
  completions are scheduled on that CQ. The "wait for all completions to
  end" code becomes much simpler this way.

Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>