linux-kernel - [tip:perf/core] perf cs-etm: Add traceID in packet

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Message-ID: <tip-03919e526b29be8d0c77142e008b397a2c089398@git.kernel.org>
Date:   Sat, 9 Feb 2019 04:54:51 -0800
From:   tip-bot for Leo Yan <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     coresight@...ts.linaro.org, jolsa@...hat.com, leo.yan@...aro.org,
        robert.walker@....com, mathieu.poirier@...aro.org, acme@...hat.com,
        mike.leach@...aro.org, alexander.shishkin@...ux.intel.com,
        namhyung@...nel.org, tglx@...utronix.de, suzuki.poulose@....com,
        hpa@...or.com, mingo@...nel.org, linux-kernel@...r.kernel.org
Subject: [tip:perf/core] perf cs-etm: Add traceID in packet

Commit-ID:  03919e526b29be8d0c77142e008b397a2c089398
Gitweb:     https://git.kernel.org/tip/03919e526b29be8d0c77142e008b397a2c089398
Author:     Leo Yan <leo.yan@...aro.org>
AuthorDate: Tue, 29 Jan 2019 20:28:40 +0800
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Wed, 6 Feb 2019 10:00:40 -0300

perf cs-etm: Add traceID in packet

Add traceID in packet, thus we can use traceID to retrieve metadata
pointer from traceID-metadata tuple.

Signed-off-by: Leo Yan <leo.yan@...aro.org>
Reviewed-by: Mathieu Poirier <mathieu.poirier@...aro.org>
Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Mike Leach <mike.leach@...aro.org>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Robert Walker <robert.walker@....com>
Cc: Suzuki K Poulouse <suzuki.poulose@....com>
Cc: coresight ml <coresight@...ts.linaro.org>
Cc: linux-arm-kernel@...ts.infradead.org
Link: http://lkml.kernel.org/r/20190129122842.32041-7-leo.yan@linaro.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/util/cs-etm-decoder/cs-etm-decoder.c | 2 ++
 tools/perf/util/cs-etm-decoder/cs-etm-decoder.h | 1 +
 2 files changed, 3 insertions(+)

diff --git a/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c b/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c
index cdd38ffd10d2..ba4c623cd8de 100644
--- a/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c
+++ b/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c
@@ -295,6 +295,7 @@ static void cs_etm_decoder__clear_buffer(struct cs_etm_decoder *decoder)
 		decoder->packet_buffer[i].last_instr_cond = 0;
 		decoder->packet_buffer[i].flags = 0;
 		decoder->packet_buffer[i].exception_number = UINT32_MAX;
+		decoder->packet_buffer[i].trace_chan_id = UINT8_MAX;
 		decoder->packet_buffer[i].cpu = INT_MIN;
 	}
 }
@@ -331,6 +332,7 @@ cs_etm_decoder__buffer_packet(struct cs_etm_decoder *decoder,
 	decoder->packet_buffer[et].last_instr_cond = 0;
 	decoder->packet_buffer[et].flags = 0;
 	decoder->packet_buffer[et].exception_number = UINT32_MAX;
+	decoder->packet_buffer[et].trace_chan_id = trace_chan_id;
 
 	if (decoder->packet_count == MAX_BUFFER - 1)
 		return OCSD_RESP_WAIT;
diff --git a/tools/perf/util/cs-etm-decoder/cs-etm-decoder.h b/tools/perf/util/cs-etm-decoder/cs-etm-decoder.h
index 012b4728a46f..7e6a8850be4a 100644
--- a/tools/perf/util/cs-etm-decoder/cs-etm-decoder.h
+++ b/tools/perf/util/cs-etm-decoder/cs-etm-decoder.h
@@ -50,6 +50,7 @@ struct cs_etm_packet {
 	u8 last_instr_cond;
 	u8 last_instr_taken_branch;
 	u8 last_instr_size;
+	u8 trace_chan_id;
 	int cpu;
 };