Messages in this thread | | | Date | Thu, 17 Sep 2020 17:23:54 -0300 | From | Arnaldo Carvalho de Melo <> | Subject | Re: [PATCH v6 4/7] perf util: Link stream pair |
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Em Fri, Sep 11, 2020 at 04:03:50PM +0800, Jin Yao escreveu: > In previous patch, we have created an evsel_streams for one event, > and top N hottest streams will be saved in a stream array in > evsel_streams. > > This patch compares total streams among two evsel_streams. > > Once two streams are fully matched, they will be linked as > a pair. From the pair, we can know which streams are matched. > > Signed-off-by: Jin Yao <yao.jin@linux.intel.com> > --- > v6: > - Rebase to perf/core > > v5: > - Remove enum stream_type > > v4: > - New patch in v4. > > tools/perf/util/stream.c | 40 ++++++++++++++++++++++++++++++++++++++++ > tools/perf/util/stream.h | 4 ++++ > 2 files changed, 44 insertions(+) > > diff --git a/tools/perf/util/stream.c b/tools/perf/util/stream.c > index 7882a7f05d97..e96e21d6e07b 100644 > --- a/tools/perf/util/stream.c > +++ b/tools/perf/util/stream.c > @@ -157,3 +157,43 @@ struct evsel_streams *evsel_streams_get(struct evsel_streams *es, > > return NULL; > } > + > +static struct stream *stream_callchain_match(struct stream *base_stream, > + struct evsel_streams *es_pair)
Please use stream__
> +{ > + for (int i = 0; i < es_pair->nr_streams; i++) { > + struct stream *pair_stream = &es_pair->streams[i]; > + > + if (callchain_cnode_matched(base_stream->cnode, > + pair_stream->cnode)) { > + return pair_stream; > + } > + } > + > + return NULL; > +} > + > +static struct stream *stream_match(struct stream *base_stream, > + struct evsel_streams *es_pair) > +{ > + return stream_callchain_match(base_stream, es_pair); > +} > + > +static void stream_link(struct stream *base_stream, struct stream *pair_stream) > +{ > + base_stream->pair_cnode = pair_stream->cnode; > + pair_stream->pair_cnode = base_stream->cnode; > +} > + > +void match_evsel_streams(struct evsel_streams *es_base, > + struct evsel_streams *es_pair) > +{ > + for (int i = 0; i < es_base->nr_streams; i++) { > + struct stream *base_stream = &es_base->streams[i]; > + struct stream *pair_stream; > + > + pair_stream = stream_match(base_stream, es_pair); > + if (pair_stream) > + stream_link(base_stream, pair_stream); > + } > +} > diff --git a/tools/perf/util/stream.h b/tools/perf/util/stream.h > index 66f61d954eef..2eb6f17a834e 100644 > --- a/tools/perf/util/stream.h > +++ b/tools/perf/util/stream.h > @@ -6,6 +6,7 @@ > > struct stream { > struct callchain_node *cnode; > + struct callchain_node *pair_cnode; > }; > > struct evsel_streams { > @@ -23,4 +24,7 @@ struct evsel_streams *perf_evlist__create_streams(struct evlist *evlist, > struct evsel_streams *evsel_streams_get(struct evsel_streams *es, > int nr_evsel, int evsel_idx); > > +void match_evsel_streams(struct evsel_streams *es_base, > + struct evsel_streams *es_pair); > + > #endif /* __PERF_STREAM_H */ > -- > 2.17.1 >
--
- Arnaldo
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