Re: [PATCH rcu 0/3] RCU CPU stall-warning changes for v6.13

From: Joel Fernandes
Date: Tue Oct 15 2024 - 14:49:18 EST


On Wed, Oct 09, 2024 at 11:05:02AM -0700, Paul E. McKenney wrote:
> Hello!
>
> This series contains RCU CPU stall-warning changes for v6.13:
>
> 1. Delete unused rcu_gp_might_be_stalled() function.
>
> 2. Stop stall warning from dumping stacks if grace period ends.
>
> 3. Finer-grained grace-period-end checks in rcu_dump_cpu_stacks().
>

Other than small nit in 2/3,

Reviewed-by: Joel Fernandes (Google) <joel@xxxxxxxxxxxxxxxxx>

I was curious if you're seeing perf or other improvements with the
finer-grained rnp locking.

thanks,

- Joel


> Thanx, Paul
>
> ------------------------------------------------------------------------
>
> b/include/linux/rcutiny.h | 1 -
> b/include/linux/rcutree.h | 1 -
> b/kernel/rcu/tree_stall.h | 30 ------------------------------
> kernel/rcu/tree_stall.h | 35 ++++++++++++++++++++++-------------
> 4 files changed, 22 insertions(+), 45 deletions(-)
>