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| author |   Mike Marciniszyn <mike.marciniszyn@intel.com> | 2012-06-27 18:33:19 -0400 |
|---|---|---|
| committer |   Roland Dreier <roland@purestorage.com> | 2012-07-08 18:05:19 -0700 |
| commit | 8aac4cc3a9d7d7c2f203b7a8db521b604cfb5dc9 (patch) | |
| tree | f9e98f1fd7df79a1577c77d74b7242fa16b9a74d /tools/perf/scripts/python/syscall-counts.py | |
| parent | IB/qib: Avoid returning EBUSY from MR deregister (diff) | |
| download | linux-dev-8aac4cc3a9d7d7c2f203b7a8db521b604cfb5dc9.tar.xz linux-dev-8aac4cc3a9d7d7c2f203b7a8db521b604cfb5dc9.zip | |
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>
Diffstat (limited to 'tools/perf/scripts/python/syscall-counts.py')
0 files changed, 0 insertions, 0 deletions