Messages in this thread Patch in this message | | | From | Namhyung Kim <> | Subject | [PATCH v2] perf tools: Add SPE total latency as PERF_SAMPLE_WEIGHT | Date | Wed, 1 Dec 2021 14:08:55 -0800 |
| |
Use total latency info in the SPE counter packet as sample weight so that we can see it in local_weight and (global) weight sort keys.
Maybe we can use PERF_SAMPLE_WEIGHT_STRUCT to support ins_lat as well but I'm not sure which latency it matches. So just adding total latency first.
Cc: German Gomez <german.gomez@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Leo Yan <leo.yan@linaro.org> Signed-off-by: Namhyung Kim <namhyung@kernel.org> --- tools/perf/util/arm-spe-decoder/arm-spe-decoder.c | 2 ++ tools/perf/util/arm-spe-decoder/arm-spe-decoder.h | 1 + tools/perf/util/arm-spe.c | 5 ++++- 3 files changed, 7 insertions(+), 1 deletion(-)
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 3fc528c9270c..5e390a1a79ab 100644 --- a/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c +++ b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c @@ -179,6 +179,8 @@ static int arm_spe_read_record(struct arm_spe_decoder *decoder) decoder->record.phys_addr = ip; break; case ARM_SPE_COUNTER: + if (idx == SPE_CNT_PKT_HDR_INDEX_TOTAL_LAT) + decoder->record.latency = payload; break; case ARM_SPE_CONTEXT: decoder->record.context_id = payload; diff --git a/tools/perf/util/arm-spe-decoder/arm-spe-decoder.h b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.h index 46a8556a9e95..69b31084d6be 100644 --- a/tools/perf/util/arm-spe-decoder/arm-spe-decoder.h +++ b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.h @@ -33,6 +33,7 @@ struct arm_spe_record { enum arm_spe_sample_type type; int err; u32 op; + u32 latency; u64 from_ip; u64 to_ip; u64 timestamp; diff --git a/tools/perf/util/arm-spe.c b/tools/perf/util/arm-spe.c index 4748bcfe61de..82c08f2a60d0 100644 --- a/tools/perf/util/arm-spe.c +++ b/tools/perf/util/arm-spe.c @@ -317,6 +317,7 @@ static int arm_spe__synth_mem_sample(struct arm_spe_queue *speq, sample.addr = record->virt_addr; sample.phys_addr = record->phys_addr; sample.data_src = data_src; + sample.weight = record->latency; return arm_spe_deliver_synth_event(spe, speq, event, &sample); } @@ -334,6 +335,7 @@ static int arm_spe__synth_branch_sample(struct arm_spe_queue *speq, sample.id = spe_events_id; sample.stream_id = spe_events_id; sample.addr = record->to_ip; + sample.weight = record->latency; return arm_spe_deliver_synth_event(spe, speq, event, &sample); } @@ -980,7 +982,8 @@ arm_spe_synth_events(struct arm_spe *spe, struct perf_session *session) attr.type = PERF_TYPE_HARDWARE; attr.sample_type = evsel->core.attr.sample_type & PERF_SAMPLE_MASK; attr.sample_type |= PERF_SAMPLE_IP | PERF_SAMPLE_TID | - PERF_SAMPLE_PERIOD | PERF_SAMPLE_DATA_SRC; + PERF_SAMPLE_PERIOD | PERF_SAMPLE_DATA_SRC | + PERF_SAMPLE_WEIGHT; if (spe->timeless_decoding) attr.sample_type &= ~(u64)PERF_SAMPLE_TIME; else -- 2.34.0.384.gca35af8252-goog
| |