diff options
| author | Mike Marciniszyn <[email protected]> | 2015-12-07 15:39:22 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <[email protected]> | 2015-12-21 14:00:17 -0800 |
| commit | a054374f15428cbc1d9cb9cba17ce870eaa7d60f (patch) | |
| tree | 07dd3a9d52cb4c409fd799c65ab93e699a6e4c2f /tools/perf/scripts/python | |
| parent | a5a9e8ccab4d24c7d9e1da8222f373688745ca6a (diff) | |
staging/rdma/hfi1: convert buffers allocated atomic to per cpu
Profiling has shown the the atomic is a performance issue
for the pio hot path.
If multiple cpus allocated an sc's buffer, the cacheline
containing the atomic will bounce from L0 to L0.
Convert the atomic to a percpu variable.
Reviewed-by: Jubin John <[email protected]>
Signed-off-by: Mike Marciniszyn <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions