diff options
| author | Yunfeng Ye <yeyunfeng@huawei.com> | 2020-11-19 14:21:25 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-01-12 19:47:54 +0100 |
| commit | b651b96a64010f8d14434aee5983e3be0f4c83be (patch) | |
| tree | 4eeab36c49b7a724da97ad79f373715f96a4dc49 /lib/genalloc.c | |
| parent | e8b49b1e6212601f487a6266532d223e0b199954 (diff) | |
workqueue: Kick a worker based on the actual activation of delayed works
[ Upstream commit 01341fbd0d8d4e717fc1231cdffe00343088ce0b ]
In realtime scenario, We do not want to have interference on the
isolated cpu cores. but when invoking alloc_workqueue() for percpu wq
on the housekeeping cpu, it kick a kworker on the isolated cpu.
alloc_workqueue
pwq_adjust_max_active
wake_up_worker
The comment in pwq_adjust_max_active() said:
"Need to kick a worker after thawed or an unbound wq's
max_active is bumped"
So it is unnecessary to kick a kworker for percpu's wq when invoking
alloc_workqueue(). this patch only kick a worker based on the actual
activation of delayed works.
Signed-off-by: Yunfeng Ye <yeyunfeng@huawei.com>
Reviewed-by: Lai Jiangshan <jiangshanlai@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'lib/genalloc.c')
0 files changed, 0 insertions, 0 deletions