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| author |   Lai Jiangshan <laijs@cn.fujitsu.com> | 2014-07-22 13:01:59 +0800 |
|---|---|---|
| committer |   Tejun Heo <tj@kernel.org> | 2014-07-22 10:37:52 -0400 |
| commit | a489a03eca74cd1d5ac771f4b2ae2c826aab0b30 (patch) | |
| tree | 7ac69e996945da543012d86bc2efe66cb5c082a2 /tools/perf/scripts/python/call-graph-from-postgresql.py | |
| parent | workqueue: wake regular worker if need_more_worker() when rescuer leave the pool (diff) | |
| download | linux-dev-a489a03eca74cd1d5ac771f4b2ae2c826aab0b30.tar.xz linux-dev-a489a03eca74cd1d5ac771f4b2ae2c826aab0b30.zip | |
workqueue: remove an unneeded UNBOUND test before waking up the next worker
In process_one_work():
if ((worker->flags & WORKER_UNBOUND) && need_more_worker(pool))
wake_up_worker(pool);
the first test is unneeded. Even if the first test is removed, it
doesn't affect the wake-up logic for WORKER_UNBOUND, and it will not
introduce any useless wake-ups for normal per-cpu workers since
nr_running is always >= 1. It will introduce useless/redundant
wake-ups for CPU_INTENSIVE, but this case is rare and the next patch
will also remove this redundant wake-up.
tj: Minor updates to the description and comment.
Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-postgresql.py')
0 files changed, 0 insertions, 0 deletions