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Date:   Tue, 8 Jun 2021 13:45:27 -0300
From:   Arnaldo Carvalho de Melo <acme@kernel.org>
To:     Peter Zijlstra <peterz@infradead.org>
Cc:     Leo Yan <leo.yan@linaro.org>, Ingo Molnar <mingo@redhat.com>,
        Mark Rutland <mark.rutland@arm.com>,
        Alexander Shishkin <alexander.shishkin@linux.intel.com>,
        Jiri Olsa <jolsa@redhat.com>,
        Namhyung Kim <namhyung@kernel.org>,
        Thomas Gleixner <tglx@linutronix.de>, x86@kernel.org,
        "H. Peter Anvin" <hpa@zytor.com>,
        Mathieu Poirier <mathieu.poirier@linaro.org>,
        Suzuki K Poulose <suzuki.poulose@arm.com>,
        Mike Leach <mike.leach@linaro.org>,
        Adrian Hunter <adrian.hunter@intel.com>,
        Andi Kleen <ak@linux.intel.com>,
        linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org,
        coresight@lists.linaro.org, linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v2 5/8] perf auxtrace: Change to use SMP memory barriers
Message-ID: <YL+epwdGJ1/tx8MF@kernel.org>
References: <20210602103007.184993-1-leo.yan@linaro.org>
 <20210602103007.184993-6-leo.yan@linaro.org>
 <YL47cyfNBx5OIRNB@hirez.programming.kicks-ass.net>
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Em Mon, Jun 07, 2021 at 05:29:55PM +0200, Peter Zijlstra escreveu:
> On Wed, Jun 02, 2021 at 06:30:04PM +0800, Leo Yan wrote:
> > The kernel and the userspace tool can access the AUX ring buffer head
> > and tail from different CPUs, thus SMP class of barriers are required
> > on SMP system.
> > 
> > This patch changes to use SMP barriers to replace mb() and rmb()
> > barriers.
> > 
> > Signed-off-by: Leo Yan <leo.yan@linaro.org>
> 
> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>

Thanks, applied.

- Arnaldo