[v5,20/21] perf arm_spe: Decode memory tagging properties
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Message ID 20201029071927.9308-21-leo.yan@linaro.org
State New, archived
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Series
  • perf arm-spe: Refactor decoding & dumping flow
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Commit Message

Leo Yan Oct. 29, 2020, 7:19 a.m. UTC
From: Andre Przywara <andre.przywara@arm.com>

When SPE records a physical address, it can additionally tag the event
with information from the Memory Tagging architecture extension.

Decode the two additional fields in the SPE event payload.

[leoy: Refined patch to use predefined macros]

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Leo Yan <leo.yan@linaro.org>
---
 tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.c | 6 +++++-
 tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.h | 2 ++
 2 files changed, 7 insertions(+), 1 deletion(-)

Patch
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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 70593a4e0aa5..97a47ac3aa28 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
@@ -367,6 +367,7 @@  static int arm_spe_pkt_desc_addr(const struct arm_spe_pkt *packet,
 				 char *buf, size_t buf_len)
 {
 	int ns, el, idx = packet->index;
+	int ch, pat;
 	u64 payload = packet->payload;
 	int err = 0;
 
@@ -384,9 +385,12 @@  static int arm_spe_pkt_desc_addr(const struct arm_spe_pkt *packet,
 					    "VA 0x%llx", payload);
 	case SPE_ADDR_PKT_HDR_INDEX_DATA_PHYS:
 		ns = !!SPE_ADDR_PKT_GET_NS(payload);
+		ch = !!SPE_ADDR_PKT_GET_CH(payload);
+		pat = SPE_ADDR_PKT_GET_PAT(payload);
 		payload = SPE_ADDR_PKT_ADDR_GET_BYTES_0_6(payload);
 		return arm_spe_pkt_snprintf(&err, &buf, &buf_len,
-					    "PA 0x%llx ns=%d", payload, ns);
+					    "PA 0x%llx ns=%d ch=%d, pat=%x",
+					    payload, ns, ch, pat);
 	default:
 		return 0;
 	}
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 7032fc141ad4..1ad14885c2a1 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
@@ -73,6 +73,8 @@  struct arm_spe_pkt {
 
 #define SPE_ADDR_PKT_GET_NS(v)			(((v) & BIT_ULL(63)) >> 63)
 #define SPE_ADDR_PKT_GET_EL(v)			(((v) & GENMASK_ULL(62, 61)) >> 61)
+#define SPE_ADDR_PKT_GET_CH(v)			(((v) & BIT_ULL(62)) >> 62)
+#define SPE_ADDR_PKT_GET_PAT(v)			(((v) & GENMASK_ULL(59, 56)) >> 56)
 
 #define SPE_ADDR_PKT_EL0			0
 #define SPE_ADDR_PKT_EL1			1