linux-kernel - Re: [PATCH v2 0/5] seqlock: Introduce PREEMPT

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Message-ID: <20200916130233.GS2674@hirez.programming.kicks-ass.net>
Date:   Wed, 16 Sep 2020 15:02:33 +0200
From:   peterz@...radead.org
To:     Qian Cai <caiqian@...hat.com>
Cc:     Qian Cai <cai@...hat.com>, Boqun Feng <boqun.feng@...il.com>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        "Ahmed S. Darwish" <a.darwish@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Will Deacon <will@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        "Sebastian A. Siewior" <bigeasy@...utronix.de>,
        "Paul E. McKenney" <paulmck@...nel.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        LKML <linux-kernel@...r.kernel.org>, linux-next@...r.kernel.org,
        Waiman Long <longman@...hat.com>
Subject: Re: [PATCH v2 0/5] seqlock: Introduce PREEMPT_RT support

On Wed, Sep 16, 2020 at 09:00:59AM -0400, Qian Cai wrote:
> 
> 
> ----- Original Message -----
> > On Wed, Sep 16, 2020 at 08:52:07AM -0400, Qian Cai wrote:
> > > On Tue, 2020-09-15 at 16:30 +0200, peterz@...radead.org wrote:
> > > > On Tue, Sep 15, 2020 at 08:48:17PM +0800, Boqun Feng wrote:
> > > > > I think this happened because seqcount_##lockname##_init() is defined
> > > > > at
> > > > > function rather than macro, so when the seqcount_init() gets expand in
> > > > 
> > > > Bah! I hate all this :/
> > > > 
> > > > I suspect the below, while more verbose than I'd like is the best
> > > > option.
> > > 
> > > Stephen, can you add this patch for now until Peter beats you to it?
> > 
> > Did you verify it works? I only wrote it..
> 
> Yes, I did.

Excellent, I'll stick a Tested-by from you on then.