2017-12-27 13:09:13

by Nikita Yushchenko

Subject: cancel_work_sync() can cause priority invertion

Hi

For those who care about linux RT behavior:

while analyzing traces, just found priority inversion caused by RT task
calling cancel_work_sync(), while work item in question is executing in
non-RT kworker that was preempted for significant time.

WBR,
Nikita Yushchenko