diff options
| author | Guy Shapiro <[email protected]> | 2015-04-15 18:17:56 +0300 |
|---|---|---|
| committer | Doug Ledford <[email protected]> | 2015-05-05 09:18:02 -0400 |
| commit | c1d383b5785b1e0fb5fb862864712a7208219e6a (patch) | |
| tree | ac3eb2c7467890e8665508c28b5b5c517b5a0e83 /tools/perf/util/scripting-engines/trace-event-python.c | |
| parent | 5b6b8fe64053b2649660ded2f3c5be25ebddbfdb (diff) | |
IB/core: dma map/unmap locking optimizations
Currently, while mapping or unmapping pages for ODP, the umem mutex is locked
and unlocked once for each page. Such lock/unlock operation take few tens to
hundreds of nsecs. This makes a significant impact when mapping or unmapping few
MBs of memory.
To avoid this, the mutex should be locked only once per operation, and not per
page.
Signed-off-by: Guy Shapiro <[email protected]>
Acked-by: Shachar Raindel <[email protected]>
Reviewed-by: Sagi Grimberg <[email protected]>
Signed-off-by: Doug Ledford <[email protected]>
Diffstat (limited to 'tools/perf/util/scripting-engines/trace-event-python.c')
0 files changed, 0 insertions, 0 deletions