On Thu, May 21, 2020 at 6:52 PM Paul E. McKenney wrote:
>
> On Wed, May 20, 2020 at 06:48:18PM -0400, Joel Fernandes (Google) wrote:
> > rcu_read_unlock() can incur an infrequent deadlock in
> > sched_core_balance(). Fix this by using sched-RCU instead.
> >
> > This fixes the following spinlock
On Wed, May 20, 2020 at 06:48:18PM -0400, Joel Fernandes (Google) wrote:
> rcu_read_unlock() can incur an infrequent deadlock in
> sched_core_balance(). Fix this by using sched-RCU instead.
>
> This fixes the following spinlock recursion observed when testing the
> core scheduling patches on
rcu_read_unlock() can incur an infrequent deadlock in
sched_core_balance(). Fix this by using sched-RCU instead.
This fixes the following spinlock recursion observed when testing the
core scheduling patches on PREEMPT=y kernel on ChromeOS:
[3.240891] BUG: spinlock recursion on CPU#2,
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