Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Date:   Mon, 7 Dec 2020 13:09:43 +0100
From:   Peter Zijlstra <peterz@infradead.org>
To:     Thomas Gleixner <tglx@linutronix.de>
Cc:     LKML <linux-kernel@vger.kernel.org>,
        Marco Elver <elver@google.com>,
        kasan-dev <kasan-dev@googlegroups.com>,
        "Paul E. McKenney" <paulmck@kernel.org>,
        Ingo Molnar <mingo@kernel.org>,
        Frederic Weisbecker <frederic@kernel.org>,
        Will Deacon <will@kernel.org>,
        Naresh Kamboju <naresh.kamboju@linaro.org>,
        syzbot+23a256029191772c2f02@syzkaller.appspotmail.com,
        syzbot+56078ac0b9071335a745@syzkaller.appspotmail.com,
        syzbot+867130cb240c41f15164@syzkaller.appspotmail.com
Subject: Re: [patch 3/3] tick: Annotate tick_do_timer_cpu data races
Message-ID: <20201207120943.GS3021@hirez.programming.kicks-ass.net>
References: <20201206211253.919834182@linutronix.de>
 <20201206212002.876987748@linutronix.de>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20201206212002.876987748@linutronix.de>
Precedence: bulk

On Sun, Dec 06, 2020 at 10:12:56PM +0100, Thomas Gleixner wrote:
> +		if (data_race(tick_do_timer_cpu) == TICK_DO_TIMER_BOOT) {

I prefer the form:

	if (data_race(tick_do_timer_cpu == TICK_DO_TIMER_BOOT)) {

But there doesn't yet seem to be sufficient data_race() usage in the
kernel to see which of the forms is preferred. Do we want to bike-shed
this now and document the outcome somewhere?