linux-kernel - [PATCH v4 12/21] perf arm-spe: Add new function arm_spe_pkt_desc

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Date:   Tue, 27 Oct 2020 11:09:08 +0800
From:   Leo Yan <leo.yan@...aro.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Andre Przywara <andre.przywara@....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>,
        James Clark <james.clark@....com>, Al Grant <Al.Grant@....com>,
        Dave Martin <Dave.Martin@....com>, linux-kernel@...r.kernel.org
Cc:     Leo Yan <leo.yan@...aro.org>
Subject: [PATCH v4 12/21] perf arm-spe: Add new function arm_spe_pkt_desc_counter()

This patch moves out the counter packet parsing code from
arm_spe_pkt_desc() to the new function arm_spe_pkt_desc_counter().

Signed-off-by: Leo Yan <leo.yan@...aro.org>
Reviewed-by: Andre Przywara <andre.przywara@....com>
---
 .../arm-spe-decoder/arm-spe-pkt-decoder.c     | 64 +++++++++++--------
 1 file changed, 37 insertions(+), 27 deletions(-)

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 9304dfe72ebd..8f481c6ea054 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
@@ -293,6 +293,42 @@ static int arm_spe_pkt_desc_addr(const struct arm_spe_pkt *packet,
 	}
 }
 
+static int arm_spe_pkt_desc_counter(const struct arm_spe_pkt *packet,
+				    char *buf, size_t buf_len)
+{
+	u64 payload = packet->payload;
+	const char *name = arm_spe_pkt_name(packet->type);
+	size_t blen = buf_len;
+	int ret;
+
+	ret = arm_spe_pkt_snprintf(&buf, &blen, "%s %d ", name,
+				   (unsigned short)payload);
+	if (ret < 0)
+		return ret;
+
+	switch (packet->index) {
+	case 0:
+		ret = arm_spe_pkt_snprintf(&buf, &blen, "TOT");
+		if (ret < 0)
+			return ret;
+		break;
+	case 1:
+		ret = arm_spe_pkt_snprintf(&buf, &blen, "ISSUE");
+		if (ret < 0)
+			return ret;
+		break;
+	case 2:
+		ret = arm_spe_pkt_snprintf(&buf, &blen, "XLAT");
+		if (ret < 0)
+			return ret;
+		break;
+	default:
+		break;
+	}
+
+	return buf_len - blen;
+}
+
 int arm_spe_pkt_desc(const struct arm_spe_pkt *packet, char *buf,
 		     size_t buf_len)
 {
@@ -435,33 +471,7 @@ int arm_spe_pkt_desc(const struct arm_spe_pkt *packet, char *buf,
 		return arm_spe_pkt_snprintf(&buf, &blen, "%s 0x%lx el%d",
 					    name, (unsigned long)payload, idx + 1);
 	case ARM_SPE_COUNTER:
-		ret = arm_spe_pkt_snprintf(&buf, &blen, "%s %d ", name,
-					   (unsigned short)payload);
-		if (ret < 0)
-			return ret;
-
-		switch (idx) {
-		case 0:
-			ret = arm_spe_pkt_snprintf(&buf, &blen, "TOT");
-			if (ret < 0)
-				return ret;
-			break;
-		case 1:
-			ret = arm_spe_pkt_snprintf(&buf, &blen, "ISSUE");
-			if (ret < 0)
-				return ret;
-			break;
-		case 2:
-			ret = arm_spe_pkt_snprintf(&buf, &blen, "XLAT");
-			if (ret < 0)
-				return ret;
-			break;
-		default:
-			break;
-		}
-
-		return buf_len - blen;
-
+		return arm_spe_pkt_desc_counter(packet, buf, buf_len);
 	default:
 		break;
 	}
-- 
2.17.1