linux-kernel - [PATCH v2 3/6] perf arm-spe: Store operation type in packet

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Date:   Thu, 11 Feb 2021 15:38:53 +0200
From:   James Clark <james.clark@....com>
To:     linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org
Cc:     Leo Yan <leo.yan@...aro.org>, James Clark <james.clark@....com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        John Garry <john.garry@...wei.com>,
        Will Deacon <will@...nel.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Al Grant <al.grant@....com>,
        Andre Przywara <andre.przywara@....com>,
        Wei Li <liwei391@...wei.com>,
        Adrian Hunter <adrian.hunter@...el.com>
Subject: [PATCH v2 3/6] perf arm-spe: Store operation type in packet

From: Leo Yan <leo.yan@...aro.org>

This patch is to store operation type in packet structure.

Signed-off-by: Leo Yan <leo.yan@...aro.org>
Signed-off-by: James Clark <james.clark@....com>
Reviewed-by: James Clark <james.clark@....com>
Tested-by: James Clark <james.clark@....com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Arnaldo Carvalho de Melo <acme@...nel.org>
Cc: Mark Rutland <mark.rutland@....com>
Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: John Garry <john.garry@...wei.com>
Cc: Will Deacon <will@...nel.org>
Cc: Mathieu Poirier <mathieu.poirier@...aro.org>
Cc: Al Grant <al.grant@....com>
Cc: Andre Przywara <andre.przywara@....com>
Cc: Wei Li <liwei391@...wei.com>
Cc: Adrian Hunter <adrian.hunter@...el.com>
---
 tools/perf/util/arm-spe-decoder/arm-spe-decoder.c | 6 ++++++
 tools/perf/util/arm-spe-decoder/arm-spe-decoder.h | 6 ++++++
 2 files changed, 12 insertions(+)

diff --git a/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c
index 7aac3048b090..32fe41835fa6 100644
--- a/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c
+++ b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c
@@ -182,6 +182,12 @@ static int arm_spe_read_record(struct arm_spe_decoder *decoder)
 		case ARM_SPE_CONTEXT:
 			break;
 		case ARM_SPE_OP_TYPE:
+			if (idx == SPE_OP_PKT_HDR_CLASS_LD_ST_ATOMIC) {
+				if (payload & 0x1)
+					decoder->record.op = ARM_SPE_ST;
+				else
+					decoder->record.op = ARM_SPE_LD;
+			}
 			break;
 		case ARM_SPE_EVENTS:
 			if (payload & BIT(EV_L1D_REFILL))
diff --git a/tools/perf/util/arm-spe-decoder/arm-spe-decoder.h b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.h
index 7b845001afe7..59bdb7309674 100644
--- a/tools/perf/util/arm-spe-decoder/arm-spe-decoder.h
+++ b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.h
@@ -24,9 +24,15 @@ enum arm_spe_sample_type {
 	ARM_SPE_REMOTE_ACCESS	= 1 << 7,
 };
 
+enum arm_spe_op_type {
+	ARM_SPE_LD		= 1 << 0,
+	ARM_SPE_ST		= 1 << 1,
+};
+
 struct arm_spe_record {
 	enum arm_spe_sample_type type;
 	int err;
+	u32 op;
 	u64 from_ip;
 	u64 to_ip;
 	u64 timestamp;
-- 
2.28.0