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Message-ID: <362032af-382e-d367-a655-1c25407309a0@arm.com>
Date:   Mon, 5 Jun 2023 23:11:25 +0100
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Subject: Re: [PATCH 1/4] perf cs-etm: Only track threads instead of PID and
 TIDs
To:     James Clark <james.clark@arm.com>, coresight@lists.linaro.org,
        denik@chromium.org
Cc:     Mike Leach <mike.leach@linaro.org>, Leo Yan <leo.yan@linaro.org>,
        Peter Zijlstra <peterz@infradead.org>,
        Ingo Molnar <mingo@redhat.com>,
        Arnaldo Carvalho de Melo <acme@kernel.org>,
        Mark Rutland <mark.rutland@arm.com>,
        Alexander Shishkin <alexander.shishkin@linux.intel.com>,
        Jiri Olsa <jolsa@kernel.org>,
        Namhyung Kim <namhyung@kernel.org>,
        Ian Rogers <irogers@google.com>,
        Adrian Hunter <adrian.hunter@intel.com>,
        John Garry <john.g.garry@oracle.com>,
        Will Deacon <will@kernel.org>,
        linux-arm-kernel@lists.infradead.org,
        linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org
References: <20230524131958.2139331-1-james.clark@arm.com>
 <20230524131958.2139331-2-james.clark@arm.com>
From:   Suzuki K Poulose <suzuki.poulose@arm.com>
In-Reply-To: <20230524131958.2139331-2-james.clark@arm.com>
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On 24/05/2023 14:19, James Clark wrote:
> PIDs and TIDs are already contained within the thread struct, so to
> avoid inconsistencies drop the extra members on the etm queue and only
> use the thread struct.
> 
> At the same time stop using the 'unknown' thread. In a later commit
> we will be making samples from multiple machines so it will be better
> to use the idle thread of each machine rather than overlapping unknown
> threads. Using the idle thread is also better because kernel addresses
> with a previously unknown thread will now be assigned to a real kernel
> thread.
> 
> Signed-off-by: James Clark <james.clark@arm.com>


Acked-by: Suzuki K Poulose <suzuki.poulose@arm.com>