linux-kernel - Re: [PATCH 3/6] perf cs-etm: Save TRCDEVARCH register

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Message-ID: <ef068f6a-0a31-bd34-7140-5d7cca331369@arm.com>
Date:   Tue, 3 Aug 2021 13:29:45 +0100
From:   James Clark <james.clark@....com>
To:     Leo Yan <leo.yan@...aro.org>, Mike Leach <mike.leach@...aro.org>
Cc:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Coresight ML <coresight@...ts.linaro.org>,
        Al Grant <al.grant@....com>,
        "Suzuki K. Poulose" <suzuki.poulose@....com>,
        Anshuman Khandual <anshuman.khandual@....com>,
        John Garry <john.garry@...wei.com>,
        Will Deacon <will@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-perf-users@...r.kernel.org
Subject: Re: [PATCH 3/6] perf cs-etm: Save TRCDEVARCH register



On 02/08/2021 13:05, Leo Yan wrote:
> If so, I understand your suggestion in another email to add a new magic
> number and a new protocol (this patch set has added the new protocol
> CS_ETM_PROTO_ETE) for creating ETE decoder.

Yes this is what I'm working on now. I think that it's actually
cleaner than the previous change where there was some half way
solution that old versions of perf wouldn't properly decode ETE
but would try to anyway.

James