linux-kernel - Re: [GIT PULL tip/core/rcu] RCU commits for v5.9

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Date:   Tue, 14 Jul 2020 13:53:26 -0700
From:   "Paul E. McKenney" <paulmck@...nel.org>
To:     Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc:     mingo@...nel.org, linux-kernel@...r.kernel.org,
        rcu@...r.kernel.org, arnd@...db.de, elver@...gle.com, ethp@...com,
        frederic@...nel.org, jbi.octave@...il.com, joel@...lfernandes.org,
        lihaoliang@...gle.com, madhuparnabhowmik10@...il.com,
        mchehab+huawei@...nel.org, peter.enderborg@...y.com,
        rdunlap@...radead.org, richard.weiyang@...ux.alibaba.com,
        urezki@...il.com, zou_wei@...wei.com, tglx@...utronix.de
Subject: Re: [GIT PULL tip/core/rcu] RCU commits for v5.9

On Tue, Jul 14, 2020 at 09:02:53PM +0200, Sebastian Andrzej Siewior wrote:
> On 2020-07-14 11:27:32 [-0700], Paul E. McKenney wrote:
> > I believe that Ulad and Joel are working on an update.
> 
> I expressed multiple times that I am unhappy with the raw_spinlock_t
> which both want to keep. It is important to be future proof but at the
> same time I am not sure if they know how many in-hardirq kmalloc() or
> kfree() invocation we have as of today in PREEMPT_RT.
> I also had a patch in my series to keep the lock/unlock path symmetrical
> and it I think that I the only one that is missing it.

Are you good with giving Ulad a few days to produce his patch?

We do have at least a week or two before the merge window opens,
after all.

						Thanx, Paul