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(parent: 6a82649) | patch
IB/qib: RCU locking for MR validation
authorMike Marciniszyn <mike.marciniszyn@intel.com>
Wed, 27 Jun 2012 22:33:19 +0000 (18:33 -0400)
committerRoland Dreier <roland@purestorage.com>
Mon, 9 Jul 2012 01:05:19 +0000 (18:05 -0700)
commit8aac4cc3a9d7d7c2f203b7a8db521b604cfb5dc9
treef9e98f1fd7df79a1577c77d74b7242fa16b9a74dtree | snapshot
parent6a82649f217023863d6b1740017e6c3dd6685327commit | diff
IB/qib: RCU locking for MR validation

Profiling indicates that MR validation locking is expensive.  The MR
table is largely read-only and is a suitable candidate for RCU locking.

The patch uses RCU locking during validation to eliminate one
lock/unlock during that validation.

Reviewed-by: Mike Heinz <michael.william.heinz@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
drivers/infiniband/hw/qib/qib_keys.c diff | blob | history
drivers/infiniband/hw/qib/qib_mr.c diff | blob | history
drivers/infiniband/hw/qib/qib_verbs.c diff | blob | history
drivers/infiniband/hw/qib/qib_verbs.h diff | blob | history
Linux Kernel tree with some unpolished code for Colibri/Apalis modules