linux-kernel - Re: [PATCH 0/2] coresight: Add barrier packet when moving offset forward

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Date:   Fri, 23 Aug 2019 17:30:02 -0700
From:   Yabin Cui <yabinc@...gle.com>
To:     Mathieu Poirier <mathieu.poirier@...aro.org>,
        Suzuki K Poulose <suzuki.poulose@....com>, leo.yan@...aro.org
Cc:     mike.leach@....com, alexander.shishkin@...ux.intel.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Yabin Cui <yabinc@...gle.com>
Subject: Re: [PATCH 0/2] coresight: Add barrier packet when moving offset forward

Thanks for fixing this problem. I didn't realize it because I usually use a
buffer size >= the default ETR buffer size, which is harder to reproduce the
problem.
The patches LGTM, maybe you also want to fix the problem commented by Leo Yan.
I tested the patches by recording etm data with a buffer size smaller than the
default ETR buffer size. Then I saw barrier packets when decoding with OpenCSD.
And I could decode successfully without error message.