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Subject[PATCH 3/4] perf arm-spe: Add SVE flags to the SPE samples
Date
From: German Gomez <german.gomez@arm.com>

Add flags from the Scalable Vector Extension (SVE) to the SPE samples
which are available from Armv8.3 (FEAT_SPEv1p1).

These will be displayed in a new SIMD sort field in a later commit.

Signed-off-by: German Gomez <german.gomez@arm.com>
Signed-off-by: James Clark <james.clark@arm.com>
---
tools/perf/util/arm-spe.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)

diff --git a/tools/perf/util/arm-spe.c b/tools/perf/util/arm-spe.c
index bfae4731a47a..7b36ba6b4079 100644
--- a/tools/perf/util/arm-spe.c
+++ b/tools/perf/util/arm-spe.c
@@ -273,6 +273,25 @@ static int arm_spe_set_tid(struct arm_spe_queue *speq, pid_t tid)
return 0;
}

+static struct simd_flags arm_spe__synth_simd_flags(const struct arm_spe_record *record)
+{
+ struct simd_flags simd_flags = {};
+
+ if ((record->op & ARM_SPE_OP_LDST) && (record->op & ARM_SPE_OP_SVE_LDST))
+ simd_flags.arch |= SIMD_OP_FLAGS_ARCH_SVE;
+
+ if ((record->op & ARM_SPE_OP_OTHER) && (record->op & ARM_SPE_OP_SVE_OTHER))
+ simd_flags.arch |= SIMD_OP_FLAGS_ARCH_SVE;
+
+ if (record->type & ARM_SPE_SVE_PARTIAL_PRED)
+ simd_flags.pred |= SIMD_OP_FLAGS_PRED_PARTIAL;
+
+ if (record->type & ARM_SPE_SVE_EMPTY_PRED)
+ simd_flags.pred |= SIMD_OP_FLAGS_PRED_EMPTY;
+
+ return simd_flags;
+}
+
static void arm_spe_prep_sample(struct arm_spe *spe,
struct arm_spe_queue *speq,
union perf_event *event,
@@ -289,6 +308,7 @@ static void arm_spe_prep_sample(struct arm_spe *spe,
sample->tid = speq->tid;
sample->period = 1;
sample->cpu = speq->cpu;
+ sample->simd_flags = arm_spe__synth_simd_flags(record);

event->sample.header.type = PERF_RECORD_SAMPLE;
event->sample.header.misc = sample->cpumode;
--
2.25.1
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