[PATCH v4 14/21] perf arm-spe: Add new function arm_spe_pkt_desc_event()

[Leo Yan]

This patch moves out the event packet parsing from arm_spe_pkt_desc()
to the new function arm_spe_pkt_desc_event().

Signed-off-by: Leo Yan <leo.yan@xxxxxxxxxx>
Reviewed-by: Andre Przywara <andre.przywara@xxxxxxx>
---
 .../arm-spe-decoder/arm-spe-pkt-decoder.c     | 136 ++++++++++--------
 1 file changed, 73 insertions(+), 63 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 4be649c26002..0522d28d731a 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
@@ -266,6 +266,78 @@ static int arm_spe_pkt_snprintf(char **buf_p, size_t *blen,
 	return ret;
 }
 
+static int arm_spe_pkt_desc_event(const struct arm_spe_pkt *packet,
+				  char *buf, size_t buf_len)
+{
+	u64 payload = packet->payload;
+	size_t blen = buf_len;
+	int ret;
+
+	ret = arm_spe_pkt_snprintf(&buf, &blen, "EV");
+	if (ret < 0)
+		return ret;
+
+	if (payload & 0x1) {
+		ret = arm_spe_pkt_snprintf(&buf, &blen, " EXCEPTION-GEN");
+		if (ret < 0)
+			return ret;
+	}
+	if (payload & 0x2) {
+		ret = arm_spe_pkt_snprintf(&buf, &blen, " RETIRED");
+		if (ret < 0)
+			return ret;
+	}
+	if (payload & 0x4) {
+		ret = arm_spe_pkt_snprintf(&buf, &blen, " L1D-ACCESS");
+		if (ret < 0)
+			return ret;
+	}
+	if (payload & 0x8) {
+		ret = arm_spe_pkt_snprintf(&buf, &blen, " L1D-REFILL");
+		if (ret < 0)
+			return ret;
+	}
+	if (payload & 0x10) {
+		ret = arm_spe_pkt_snprintf(&buf, &blen, " TLB-ACCESS");
+		if (ret < 0)
+			return ret;
+	}
+	if (payload & 0x20) {
+		ret = arm_spe_pkt_snprintf(&buf, &blen, " TLB-REFILL");
+		if (ret < 0)
+			return ret;
+	}
+	if (payload & 0x40) {
+		ret = arm_spe_pkt_snprintf(&buf, &blen, " NOT-TAKEN");
+		if (ret < 0)
+			return ret;
+	}
+	if (payload & 0x80) {
+		ret = arm_spe_pkt_snprintf(&buf, &blen, " MISPRED");
+		if (ret < 0)
+			return ret;
+	}
+	if (packet->index > 1) {
+		if (payload & 0x100) {
+			ret = arm_spe_pkt_snprintf(&buf, &blen, " LLC-ACCESS");
+			if (ret < 0)
+				return ret;
+		}
+		if (payload & 0x200) {
+			ret = arm_spe_pkt_snprintf(&buf, &blen, " LLC-REFILL");
+			if (ret < 0)
+				return ret;
+		}
+		if (payload & 0x400) {
+			ret = arm_spe_pkt_snprintf(&buf, &blen, " REMOTE-ACCESS");
+			if (ret < 0)
+				return ret;
+		}
+	}
+
+	return buf_len - blen;
+}
+
 static int arm_spe_pkt_desc_addr(const struct arm_spe_pkt *packet,
 				 char *buf, size_t buf_len)
 {
@@ -344,69 +416,7 @@ int arm_spe_pkt_desc(const struct arm_spe_pkt *packet, char *buf,
 	case ARM_SPE_END:
 		return arm_spe_pkt_snprintf(&buf, &blen, "%s", name);
 	case ARM_SPE_EVENTS:
-		ret = arm_spe_pkt_snprintf(&buf, &blen, "EV");
-		if (ret < 0)
-			return ret;
-
-		if (payload & 0x1) {
-			ret = arm_spe_pkt_snprintf(&buf, &blen, " EXCEPTION-GEN");
-			if (ret < 0)
-				return ret;
-		}
-		if (payload & 0x2) {
-			ret = arm_spe_pkt_snprintf(&buf, &blen, " RETIRED");
-			if (ret < 0)
-				return ret;
-		}
-		if (payload & 0x4) {
-			ret = arm_spe_pkt_snprintf(&buf, &blen, " L1D-ACCESS");
-			if (ret < 0)
-				return ret;
-		}
-		if (payload & 0x8) {
-			ret = arm_spe_pkt_snprintf(&buf, &blen, " L1D-REFILL");
-			if (ret < 0)
-				return ret;
-		}
-		if (payload & 0x10) {
-			ret = arm_spe_pkt_snprintf(&buf, &blen, " TLB-ACCESS");
-			if (ret < 0)
-				return ret;
-		}
-		if (payload & 0x20) {
-			ret = arm_spe_pkt_snprintf(&buf, &blen, " TLB-REFILL");
-			if (ret < 0)
-				return ret;
-		}
-		if (payload & 0x40) {
-			ret = arm_spe_pkt_snprintf(&buf, &blen, " NOT-TAKEN");
-			if (ret < 0)
-				return ret;
-		}
-		if (payload & 0x80) {
-			ret = arm_spe_pkt_snprintf(&buf, &blen, " MISPRED");
-			if (ret < 0)
-				return ret;
-		}
-		if (idx > 1) {
-			if (payload & 0x100) {
-				ret = arm_spe_pkt_snprintf(&buf, &blen, " LLC-ACCESS");
-				if (ret < 0)
-					return ret;
-			}
-			if (payload & 0x200) {
-				ret = arm_spe_pkt_snprintf(&buf, &blen, " LLC-REFILL");
-				if (ret < 0)
-					return ret;
-			}
-			if (payload & 0x400) {
-				ret = arm_spe_pkt_snprintf(&buf, &blen, " REMOTE-ACCESS");
-				if (ret < 0)
-					return ret;
-			}
-		}
-		return buf_len - blen;
-
+		return arm_spe_pkt_desc_event(packet, buf, buf_len);
 	case ARM_SPE_OP_TYPE:
 		switch (idx) {
 		case 0:
-- 
2.17.1