From: Mathieu Poirier <mathieu.poirier@linaro.org>
To: acme@kernel.org
Cc: suzuki.poulose@arm.com, peterz@infradead.org,
coresight@lists.linaro.org, linux-kernel@vger.kernel.org,
alexander.shishkin@linux.intel.com, mingo@redhat.com,
leo.yan@linaro.org, namhyung@kernel.org, jolsa@redhat.com,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 04/17] perf tools: Add handling of itrace start events
Date: Fri, 24 May 2019 11:34:55 -0600 [thread overview]
Message-ID: <20190524173508.29044-5-mathieu.poirier@linaro.org> (raw)
In-Reply-To: <20190524173508.29044-1-mathieu.poirier@linaro.org>
Add handling of ITRACE events in order to add the tid/pid of the executing
process to the perf tools machine infrastructure. This information is
later retrieved when a contextID packet is found in the trace stream.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
---
tools/perf/util/cs-etm.c | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c
index de488b43f440..0742c50fce46 100644
--- a/tools/perf/util/cs-etm.c
+++ b/tools/perf/util/cs-etm.c
@@ -1657,6 +1657,29 @@ static int cs_etm__process_timeless_queues(struct cs_etm_auxtrace *etm,
return 0;
}
+static int cs_etm__process_itrace_start(struct cs_etm_auxtrace *etm,
+ union perf_event *event)
+{
+ struct thread *th;
+
+ if (etm->timeless_decoding)
+ return 0;
+
+ /*
+ * Add the tid/pid to the log so that we can get a match when
+ * we get a contextID from the decoder.
+ */
+ th = machine__findnew_thread(etm->machine,
+ event->itrace_start.pid,
+ event->itrace_start.tid);
+ if (!th)
+ return -ENOMEM;
+
+ thread__put(th);
+
+ return 0;
+}
+
static int cs_etm__process_event(struct perf_session *session,
union perf_event *event,
struct perf_sample *sample,
@@ -1694,6 +1717,9 @@ static int cs_etm__process_event(struct perf_session *session,
return cs_etm__process_timeless_queues(etm,
event->fork.tid);
+ if (event->header.type == PERF_RECORD_ITRACE_START)
+ return cs_etm__process_itrace_start(etm, event);
+
return 0;
}
--
2.17.1
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next prev parent reply other threads:[~2019-05-24 17:36 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-24 17:34 [PATCH v2 00/17] perf tools: Coresight: Add CPU-wide trace support Mathieu Poirier
2019-05-24 17:34 ` [PATCH v2 01/17] perf tools: Configure contextID tracing in CPU-wide mode Mathieu Poirier
2019-06-07 9:21 ` Suzuki K Poulose
2019-06-07 17:40 ` Mathieu Poirier
2019-06-07 18:20 ` Arnaldo Carvalho de Melo
2019-06-07 19:33 ` Mathieu Poirier
2019-05-24 17:34 ` [PATCH v2 02/17] perf tools: Configure timestsamp generation " Mathieu Poirier
2019-06-07 9:41 ` Suzuki K Poulose
2019-06-07 17:46 ` Mathieu Poirier
2019-06-07 18:34 ` Arnaldo Carvalho de Melo
2019-05-24 17:34 ` [PATCH v2 03/17] perf tools: Configure SWITCH_EVENTS " Mathieu Poirier
2019-05-24 17:34 ` Mathieu Poirier [this message]
2019-05-24 17:34 ` [PATCH v2 05/17] perf tools: Add handling of switch-CPU-wide events Mathieu Poirier
2019-05-24 17:34 ` [PATCH v2 06/17] perf tools: Refactor error path in cs_etm_decoder__new() Mathieu Poirier
2019-05-24 17:34 ` [PATCH v2 07/17] perf tools: Move packet queue out of decoder structure Mathieu Poirier
2019-05-24 17:34 ` [PATCH v2 08/17] perf tools: Fix indentation in function cs_etm__process_decoder_queue() Mathieu Poirier
2019-05-24 17:35 ` [PATCH v2 09/17] perf tools: Introduce the concept of trace ID queues Mathieu Poirier
2019-05-24 17:35 ` [PATCH v2 10/17] perf tools: Get rid of unused cpu in struct cs_etm_queue Mathieu Poirier
2019-05-24 17:35 ` [PATCH v2 11/17] perf tools: Move thread to traceid_queue Mathieu Poirier
2019-05-24 17:35 ` [PATCH v2 12/17] perf tools: Move tid/pid " Mathieu Poirier
2019-05-24 17:35 ` [PATCH v2 13/17] perf tools: Use traceID aware memory callback API Mathieu Poirier
2019-05-24 17:35 ` [PATCH v2 14/17] perf tools: Add support for multiple traceID queues Mathieu Poirier
2019-05-24 17:35 ` [PATCH v2 15/17] perf tools: Linking PE contextID with perf thread mechanic Mathieu Poirier
2019-05-24 17:35 ` [PATCH v2 16/17] perf tools: Add notion of time to decoding code Mathieu Poirier
2019-06-06 18:50 ` Arnaldo Carvalho de Melo
2019-06-07 14:38 ` Mathieu Poirier
2019-05-24 17:35 ` [PATCH v2 17/17] perf tools: Add support for CPU-wide trace scenarios Mathieu Poirier
2019-05-31 1:45 ` [PATCH v2 00/17] perf tools: Coresight: Add CPU-wide trace support Leo Yan
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