perf arm-spe: Refactor arm-spe to support operation packet type

Extend the decoder of Arm SPE records to support more fields from the
operation packet type.

Not all fields are being decoded by this commit. Only those needed to
support the use-case SVE load/store/other operations.

Suggested-by: Leo Yan <leo.yan@linaro.org>
Signed-off-by: German Gomez <german.gomez@arm.com>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Anshuman.Khandual@arm.com
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.g.garry@oracle.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Will Deacon <will@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Link: https://lore.kernel.org/r/20230320151509.1137462-2-james.clark@arm.com
Signed-off-by: James Clark <james.clark@arm.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 26 insertions, 4 deletions

diff --git a/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c
index 40dcedfd75cd..f3918f290df5 100644
--- a/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c
+++ b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c
@@ -190,11 +190,27 @@ static int arm_spe_read_record(struct arm_spe_decoder *decoder)
 			decoder->record.context_id = payload;
 			break;
 		case ARM_SPE_OP_TYPE:
-			if (idx == SPE_OP_PKT_HDR_CLASS_LD_ST_ATOMIC) {
-				if (payload & 0x1)
-					decoder->record.op = ARM_SPE_ST;
+			switch (idx) {
+			case SPE_OP_PKT_HDR_CLASS_LD_ST_ATOMIC:
+				decoder->record.op |= ARM_SPE_OP_LDST;
+				if (payload & SPE_OP_PKT_ST)
+					decoder->record.op |= ARM_SPE_OP_ST;
 				else
-					decoder->record.op = ARM_SPE_LD;
+					decoder->record.op |= ARM_SPE_OP_LD;
+				if (SPE_OP_PKT_IS_LDST_SVE(payload))
+					decoder->record.op |= ARM_SPE_OP_SVE_LDST;
+				break;
+			case SPE_OP_PKT_HDR_CLASS_OTHER:
+				decoder->record.op |= ARM_SPE_OP_OTHER;
+				if (SPE_OP_PKT_IS_OTHER_SVE_OP(payload))
+					decoder->record.op |= ARM_SPE_OP_SVE_OTHER;
+				break;
+			case SPE_OP_PKT_HDR_CLASS_BR_ERET:
+				decoder->record.op |= ARM_SPE_OP_BRANCH_ERET;
+				break;
+			default:
+				pr_err("Get packet error!\n");
+				return -1;
 			}
 			break;
 		case ARM_SPE_EVENTS:
@@ -222,6 +238,12 @@ static int arm_spe_read_record(struct arm_spe_decoder *decoder)
 			if (payload & BIT(EV_MISPRED))
 				decoder->record.type |= ARM_SPE_BRANCH_MISS;
 
+			if (payload & BIT(EV_PARTIAL_PREDICATE))
+				decoder->record.type |= ARM_SPE_SVE_PARTIAL_PRED;
+
+			if (payload & BIT(EV_EMPTY_PREDICATE))
+				decoder->record.type |= ARM_SPE_SVE_EMPTY_PRED;
+
 			break;
 		case ARM_SPE_DATA_SOURCE:
 			decoder->record.source = payload;