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

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Message-ID: <670eb924.050a0220.63bb1.4746@mx.google.com>
Date: Tue, 15 Oct 2024 14:49:06 -0400
From: Joel Fernandes <joel@...lfernandes.org>
To: "Paul E. McKenney" <paulmck@...nel.org>
Cc: frederic@...nel.org, rcu@...r.kernel.org, linux-kernel@...r.kernel.org,
	kernel-team@...a.com, rostedt@...dmis.org
Subject: Re: [PATCH rcu 0/3] RCU CPU stall-warning changes for v6.13

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@...lfernandes.org>

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(-)
>