Re: [PATCH v3 tip/core/rcu 40/40] rcu: Make non-preemptive schedule be Tasks RCU quiescent state

[Levin, Alexander (Sasha Levin)]

On Thu, Sep 28, 2017 at 06:08:56PM +0200, Peter Zijlstra wrote:
>On Thu, Sep 28, 2017 at 03:38:16PM +0000, Levin, Alexander (Sasha Levin) wrote:
>> On Thu, Sep 28, 2017 at 05:30:55AM -0700, Paul E. McKenney wrote:
>
>> >Hmmm...  kernel/rcu/tree_plugin.h:329 thinks that someone slept (as opposed
>> >to was preempted) in an RCU read-side critical section.
>
>Sasha, was this on one of those kernels that did a printk() from
>scheduler context?

No, it was an older kernel (about a month old -next), I also didn't do
any CPU hotplug in this set of tests.

-- 

Thanks,
Sasha