diff options
| author | Will Deacon <[email protected]> | 2019-07-02 17:16:25 +0100 |
|---|---|---|
| committer | Will Deacon <[email protected]> | 2019-08-08 13:31:54 +0100 |
| commit | 587e6c10a7ce89a5924fdbeff2ec524fbd6a124b (patch) | |
| tree | 6cc02601cd05efcfebb712a740a22cea60784e1e /lib/test-string_helpers.c | |
| parent | 7c288a5b27934281d9ea8b5807bc727268b7001a (diff) | |
iommu/arm-smmu-v3: Reduce contention during command-queue insertion
The SMMU command queue is a bottleneck in large systems, thanks to the
spin_lock which serialises accesses from all CPUs to the single queue
supported by the hardware.
Attempt to improve this situation by moving to a new algorithm for
inserting commands into the queue, which is lock-free on the fast-path.
Tested-by: Ganapatrao Kulkarni <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
Diffstat (limited to 'lib/test-string_helpers.c')
0 files changed, 0 insertions, 0 deletions