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| author | Matias Bjørling <[email protected]> | 2014-06-11 21:43:54 +0000 |
|---|---|---|
| committer | Jens Axboe <[email protected]> | 2014-06-11 21:53:39 +0000 |
| commit | 28747fcd2211d0fccbe3d3c91a1067c3744db908 (patch) | |
| tree | 810f1f10310d3ec6f30aebf0be1b8a1964da58fc /tools/perf/scripts/python/sctop.py | |
| parent | null_blk: fix name and description of 'queue_mode' module parameter (diff) | |
| download | kernel-28747fcd2211d0fccbe3d3c91a1067c3744db908.tar.gz kernel-28747fcd2211d0fccbe3d3c91a1067c3744db908.zip | |
block: remove WQ_POWER_EFFICIENT from kblockd
blk-mq issues async requests through kblockd. To issue a work request on
a specific CPU, kblockd_schedule_delayed_work_on is used. However, the
specific CPU choice may not be honored, if the power_efficient option
for workqueues is set. blk-mq requires that we have strict per-cpu
scheduling, so it wont work properly if kblockd is marked
POWER_EFFICIENT and power_efficient is set.
Remove the kblockd WQ_POWER_EFFICIENT flag to prevent this behavior.
This essentially reverts part of commit 695588f9454b, which added
the WQ_POWER_EFFICIENT marker to kblockd.
Signed-off-by: Matias Bjørling <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/sctop.py')
0 files changed, 0 insertions, 0 deletions