linux-kernel - Re: [PATCH] rcu: Fix missing TICK_DEP_MASK_RCU

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Message-ID: <20230109192801.GW4028633@paulmck-ThinkPad-P17-Gen-1>
Date:   Mon, 9 Jan 2023 11:28:01 -0800
From:   "Paul E. McKenney" <paulmck@...nel.org>
To:     Frederic Weisbecker <frederic@...nel.org>
Cc:     Zqiang <qiang1.zhang@...el.com>, quic_neeraju@...cinc.com,
        joel@...lfernandes.org, rcu@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] rcu: Fix missing TICK_DEP_MASK_RCU_EXP dependency check

On Sat, Jan 07, 2023 at 10:39:22PM +0100, Frederic Weisbecker wrote:
> On Wed, Dec 21, 2022 at 12:16:34PM -0800, Paul E. McKenney wrote:
> > On Tue, Dec 20, 2022 at 10:16:25PM +0800, Zqiang wrote:
> > > This commit add TICK_DEP_MASK_RCU_EXP dependency check in
> > > check_tick_dependency(), fix commit df1e849ae4559 ("rcu: Enable
> > > tick for nohz_full CPUs slow to provide expedited QS").
> > > 
> > > Signed-off-by: Zqiang <qiang1.zhang@...el.com>
> > 
> > Again, good eyes, thank you!!!
> > 
> > I have queued this for further review and testing, given that it affects
> > pretty much only RCU.  However, if someone else would rather take it:
> > 
> > Acked-by: Paul E. McKenney <paulmck@...nel.org>
> 
> Thanks for picking it up! Please also add the following tags:
> 
> Fixes: df1e849ae455 ("rcu: Enable tick for nohz_full CPUs slow to provide expedited QS")
> Acked-by: Frederic Weisbecker <frederic@...nel.org>

Thank you for looking it over!  I will apply these on my next rebase.

							Thanx, Paul