Mike Marciniszyn 4e045572e2 IB/hfi1: Add unique txwait_lock for txreq events ... Profiling suggests that the read_seqbegin() in the txreq put logic is colliding with other uses of the iowait lock. The packet at a time use of this lock dictates a unique lock to avoid reader/writer collisions when the number of vTxWait events is low. In order to support a unique lock the iowait struct embedded in the QP is extended to remember the lock that protects the queue head. The QP destroy removes that QP from any wait list. It doesn't need to know the head because of the linked list API, but it does need to know the lock required to protect the head. This also opens up the wait logic to have unique per resources locks which needs to be in future refinement. Reviewed-by: Sebastian Sanchez <sebastian.sanchez@intel.com> Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>		2016-11-15 16:25:59 -05:00
..
core	mm: replace get_user_pages_remote() write/force parameters with gup_flags	2016-10-19 08:12:02 -07:00
hw	IB/hfi1: Add unique txwait_lock for txreq events	2016-11-15 16:25:59 -05:00
sw	kthread: kthread worker API cleanup	2016-10-11 15:06:33 -07:00
ulp	Merge of primary rdma-core code for 4.9	2016-10-09 17:04:33 -07:00
Kconfig	qedr: Add RoCE driver framework	2016-10-14 15:00:10 -04:00
Makefile	IB/rdmavt: Create module framework and handle driver registration	2016-03-10 20:37:04 -05:00