Re: [PATCH -tip V3 0/8] workqueue: break affinity initiatively

From: Lai Jiangshan
Date: Sat Jan 16 2021 - 01:03:46 EST


On Fri, Jan 15, 2021 at 9:05 PM Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:
>
> On Fri, Jan 15, 2021 at 10:11:51AM +0100, Peter Zijlstra wrote:
> > On Tue, Jan 12, 2021 at 03:53:24PM -0800, Paul E. McKenney wrote:
> > > An SRCU-P run on the new series reproduced the warning below. Repeat-by:
> > >
> > > tools/testing/selftests/rcutorture/bin/kvm.sh --allcpus --duration 10 --configs "112*SRCU-P" --bootargs "rcupdate.rcu_cpu_stall_suppress_at_boot=1 torture.disable_onoff_at_boot rcupdate.rcu_task_stall_timeout=30000 rcutree.softirq=0" --trust-make
> >
> > Lemme go wake up an EX ;-)
>
> Whee, rescuer thread goes wobbly... took a few hours but there you have
> it.
>
> All I've got so far is fugly, gotta think harder.

Hello,

With the help of this patch, you can solve the problem.

https://lore.kernel.org/lkml/20210116065753.2163-1-jiangshanlai@xxxxxxxxx/