Messages in this thread | | | Subject | Re: [PATCH 1/1] perf arm-spe: Inject SPE samples in perf-inject | From | James Clark <> | Date | Mon, 8 Nov 2021 20:39:58 +0000 |
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On 05/11/2021 10:41, German Gomez wrote: > Inject synthesized SPE samples during perf-inject run. > > Signed-off-by: German Gomez <german.gomez@arm.com>
Reviewed-by: James Clark <james.clark@arm.com> > --- > tools/perf/util/arm-spe.c | 15 +++++++++++++++ > 1 file changed, 15 insertions(+) > > diff --git a/tools/perf/util/arm-spe.c b/tools/perf/util/arm-spe.c > index 58b7069c5..7054f2315 100644 > --- a/tools/perf/util/arm-spe.c > +++ b/tools/perf/util/arm-spe.c > @@ -51,6 +51,7 @@ struct arm_spe { > u8 timeless_decoding; > u8 data_queued; > > + u64 sample_type; > u8 sample_flc; > u8 sample_llc; > u8 sample_tlb; > @@ -248,6 +249,12 @@ static void arm_spe_prep_sample(struct arm_spe *spe, > event->sample.header.size = sizeof(struct perf_event_header); > } > > +static int arm_spe__inject_event(union perf_event *event, struct perf_sample *sample, u64 type) > +{ > + event->header.size = perf_event__sample_event_size(sample, type, 0); > + return perf_event__synthesize_sample(event, type, 0, sample); > +} > + > static inline int > arm_spe_deliver_synth_event(struct arm_spe *spe, > struct arm_spe_queue *speq __maybe_unused, > @@ -256,6 +263,12 @@ arm_spe_deliver_synth_event(struct arm_spe *spe, > { > int ret; > > + if (spe->synth_opts.inject) { > + ret = arm_spe__inject_event(event, sample, spe->sample_type); > + if (ret) > + return ret; > + } > + > ret = perf_session__deliver_synth_event(spe->session, event, sample); > if (ret) > pr_err("ARM SPE: failed to deliver event, error %d\n", ret); > @@ -920,6 +933,8 @@ arm_spe_synth_events(struct arm_spe *spe, struct perf_session *session) > else > attr.sample_type |= PERF_SAMPLE_TIME; > > + spe->sample_type = attr.sample_type; > + > attr.exclude_user = evsel->core.attr.exclude_user; > attr.exclude_kernel = evsel->core.attr.exclude_kernel; > attr.exclude_hv = evsel->core.attr.exclude_hv; >
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