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From:   Leo Yan <leo.yan@linaro.org>
To:     Arnaldo Carvalho de Melo <acme@kernel.org>,
        Peter Zijlstra <peterz@infradead.org>,
        Ingo Molnar <mingo@redhat.com>,
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        Kemeng Shi <shikemeng@huawei.com>,
        James Clark <james.clark@arm.com>,
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Cc:     Leo Yan <leo.yan@linaro.org>
Subject: [PATCH v2 10/14] perf arm-spe: Store operation types in packet
Date:   Tue,  1 Sep 2020 09:38:11 +0100
Message-Id: <20200901083815.13755-11-leo.yan@linaro.org>
In-Reply-To: <20200901083815.13755-1-leo.yan@linaro.org>
References: <20200901083815.13755-1-leo.yan@linaro.org>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

This patch is to store operation types into packet structure, this can
be used by frontend to generate memory accessing info for samples.

Signed-off-by: Leo Yan <leo.yan@linaro.org>
---
 tools/perf/util/arm-spe-decoder/arm-spe-decoder.c | 11 +++++++++++
 tools/perf/util/arm-spe-decoder/arm-spe-decoder.h |  6 ++++++
 2 files changed, 17 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 1c430657939f..7bf787c47f5b 100644
--- a/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c
+++ b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c
@@ -170,6 +170,17 @@ static int arm_spe_read_record(struct arm_spe_decoder *decoder)
 		case ARM_SPE_CONTEXT:
 			break;
 		case ARM_SPE_OP_TYPE:
+			/*
+			 * When operation type packet header's class equals 1,
+			 * the payload's least significant bit (LSB) indicates
+			 * the operation type: load/swap or store.
+			 */
+			if (idx == 1) {
+				if (payload & 0x1)
+					decoder->record.op = ARM_SPE_ST;
+				else
+					decoder->record.op = ARM_SPE_LD;
+			}
 			break;
 		case ARM_SPE_EVENTS:
 			if (payload & SPE_EVT_PKT_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 31d1776785de..3273cee95ea1 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;
-- 
2.20.1