linux-kernel - [PATCH RESEND v1 12/13] perf arm-spe: Add more sub classes for operation packet

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Date:   Mon, 17 Aug 2020 15:53:47 +0100
From:   Leo Yan <leo.yan@...aro.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        James Clark <james.clark@....com>,
        Will Deacon <will@...nel.org>, Al Grant <Al.Grant@....com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Wei Li <liwei391@...wei.com>, linux-kernel@...r.kernel.org,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Mike Leach <mike.leach@...aro.org>
Cc:     Leo Yan <leo.yan@...aro.org>
Subject: [PATCH RESEND v1 12/13] perf arm-spe: Add more sub classes for operation packet

For the operation type packet payload with load/store class, it misses
to support below sub classes:

  - A load/store targeting the general-purpose registers;
  - A load/store targeting unspecified registers;
  - An MRS or MSR operation at EL1 transformed to a load/store.

This patch is to add support for these sub classes.

Signed-off-by: Leo Yan <leo.yan@...aro.org>
---
 .../arm-spe-decoder/arm-spe-pkt-decoder.c     | 21 +++++++++++++++++++
 1 file changed, 21 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 ab966885e892..095f344ee26c 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
@@ -395,6 +395,27 @@ int arm_spe_pkt_desc(const struct arm_spe_pkt *packet, char *buf,
 					return ret;
 				buf += ret;
 				blen -= ret;
+			} else if ((payload & SPE_OP_PKT_LDST_SUBCLASS_MASK) ==
+					SPE_OP_PKT_LDST_SUBCLASS_GP_REG) {
+				ret = snprintf(buf, buf_len, " GP-REG");
+				if (ret < 0)
+					return ret;
+				buf += ret;
+				blen -= ret;
+			} else if ((payload & SPE_OP_PKT_LDST_SUBCLASS_MASK) ==
+					SPE_OP_PKT_LDST_SUBCLASS_UNSPEC_REG) {
+				ret = snprintf(buf, buf_len, " UNSPEC-REG");
+				if (ret < 0)
+					return ret;
+				buf += ret;
+				blen -= ret;
+			} else if ((payload & SPE_OP_PKT_LDST_SUBCLASS_MASK) ==
+					SPE_OP_PKT_LDST_SUBCLASS_MRS_MSR) {
+				ret = snprintf(buf, buf_len, " MRS-MSR");
+				if (ret < 0)
+					return ret;
+				buf += ret;
+				blen -= ret;
 			}
 			return buf_len - blen;
 		case SPE_OP_PKT_HDR_CLASS_BR_ERET:
-- 
2.17.1