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| author | Namhyung Kim <namhyung@kernel.org> | 2021-12-01 14:08:55 -0800 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2021-12-16 12:18:11 -0300 |
| commit | b0fde9c6e291e528878ea3713997777713fe44c6 (patch) | |
| tree | 2e6b73290ff9138ed1f4a8359eaf7a7a30ef250d /tools/perf/util/arm-spe-decoder | |
| parent | f0a29c9647ff8bbb424641f79bc1894e83dec218 (diff) | |
| download | linux-b0fde9c6e291e528878ea3713997777713fe44c6.tar.gz linux-b0fde9c6e291e528878ea3713997777713fe44c6.tar.bz2 linux-b0fde9c6e291e528878ea3713997777713fe44c6.zip | |
perf arm-spe: Add SPE total latency as PERF_SAMPLE_WEIGHT
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.
Reviewed-by: Leo Yan <leo.yan@linaro.org>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: German Gomez <german.gomez@arm.com>
Cc: Ian Rogers <irogers@google.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20211201220855.1260688-1-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/arm-spe-decoder')
| -rw-r--r-- | tools/perf/util/arm-spe-decoder/arm-spe-decoder.c | 2 | ||||
| -rw-r--r-- | tools/perf/util/arm-spe-decoder/arm-spe-decoder.h | 1 |
2 files changed, 3 insertions, 0 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 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; |