linux-kernel - [PATCH] perf arm-spe: Add raw decoding for SPEv1.3 MTE and MOPS load/store

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Date:   Mon, 27 Mar 2023 11:20:57 -0500
From:   Rob Herring <robh@...nel.org>
To:     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@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Ian Rogers <irogers@...gle.com>
Cc:     Leo Yan <leo.yan@...aro.org>, linux-perf-users@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] perf arm-spe: Add raw decoding for SPEv1.3 MTE and MOPS load/store

Arm SPEv1.3 adds new load/store operation subclasses for Memory Tagging
Extension (MTE) and memory operations (MOPS). The memory operations
are memcpy and memset. Add support for decoding these new subclasses in
the raw decoding.

Cc: Leo Yan <leo.yan@...aro.org>
Signed-off-by: Rob Herring <robh@...nel.org>
---
 tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.c | 9 +++++++++
 tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.h | 3 +++
 2 files changed, 12 insertions(+)

diff --git a/tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.c b/tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.c
index fed4741f372e..a454c6737563 100644
--- a/tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.c
+++ b/tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.c
@@ -381,6 +381,15 @@ static int arm_spe_pkt_desc_op_type(const struct arm_spe_pkt *packet,
 		case SPE_OP_PKT_LDST_SUBCLASS_NV_SYSREG:
 			arm_spe_pkt_out_string(&err, &buf, &buf_len, " NV-SYSREG");
 			break;
+		case SPE_OP_PKT_LDST_SUBCLASS_MTE_TAG:
+			arm_spe_pkt_out_string(&err, &buf, &buf_len, " MTE-TAG");
+			break;
+		case SPE_OP_PKT_LDST_SUBCLASS_MEMCPY:
+			arm_spe_pkt_out_string(&err, &buf, &buf_len, " MEMCPY");
+			break;
+		case SPE_OP_PKT_LDST_SUBCLASS_MEMSET:
+			arm_spe_pkt_out_string(&err, &buf, &buf_len, " MEMSET");
+			break;
 		default:
 			break;
 		}
diff --git a/tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.h b/tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.h
index f75ed3a8a050..464a912b221c 100644
--- a/tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.h
+++ b/tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.h
@@ -123,6 +123,9 @@ enum arm_spe_events {
 #define SPE_OP_PKT_LDST_SUBCLASS_SIMD_FP	0x4
 #define SPE_OP_PKT_LDST_SUBCLASS_UNSPEC_REG	0x10
 #define SPE_OP_PKT_LDST_SUBCLASS_NV_SYSREG	0x30
+#define SPE_OP_PKT_LDST_SUBCLASS_MTE_TAG	0x14
+#define SPE_OP_PKT_LDST_SUBCLASS_MEMCPY		0x20
+#define SPE_OP_PKT_LDST_SUBCLASS_MEMSET		0x25
 
 #define SPE_OP_PKT_IS_LDST_ATOMIC(v)		(((v) & (GENMASK_ULL(7, 5) | BIT(1))) == 0x2)
 
-- 
2.39.2