On Sat, Jan 16, 2021 at 01:45:23PM +0100, Peter Zijlstra wrote: > On Sat, Jan 16, 2021 at 02:27:09PM +0800, Lai Jiangshan wrote:
> > I feel nervous to use kthread_park() here and kthread_parkme() in > > worker thread. And adding kthread_should_park() to the fast path > > also daunt me. > > Is that really such a hot path that an additional load is problematic? I think we can remove it. It would mean the kthread_park() from the online callback will take a bit longer, as it will have to wait for all the works to complete, but that should not be a fundamental problem.
