Messages in this thread Patch in this message | | | From | Andi Kleen <> | Subject | [PATCH v2 5/9] perf evsel: Add iterator to iterate over events ordered by CPU | Date | Sun, 20 Oct 2019 10:51:58 -0700 |
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From: Andi Kleen <ak@linux.intel.com>
Add some common code that is needed to iterate over all events in CPU order. Used in followon patches
Signed-off-by: Andi Kleen <ak@linux.intel.com> --- tools/perf/util/evlist.c | 33 +++++++++++++++++++++++++++++++++ tools/perf/util/evlist.h | 4 ++++ tools/perf/util/evsel.h | 1 + 3 files changed, 38 insertions(+)
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index 21b77efa802c..27b4b958eddd 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -341,6 +341,39 @@ static int perf_evlist__nr_threads(struct evlist *evlist, return perf_thread_map__nr(evlist->core.threads); } +struct perf_cpu_map *evlist__cpu_iter_start(struct evlist *evlist) +{ + struct perf_cpu_map *cpus; + struct evsel *pos; + + /* + * evlist->cpus is not necessarily a superset of all the + * event's cpus, so compute our own super set. This + * assume that there is a super set + */ + cpus = evlist->core.cpus; + evlist__for_each_entry(evlist, pos) { + pos->cpu_index = 0; + if (pos->core.cpus->nr > cpus->nr) + cpus = pos->core.cpus; + } + return cpus; +} + +bool evlist__cpu_iter_skip(struct evsel *ev, int cpu) +{ + if (ev->cpu_index >= ev->core.cpus->nr) + return true; + if (cpu >= 0 && ev->core.cpus->map[ev->cpu_index] != cpu) + return true; + return false; +} + +void evlist__cpu_iter_next(struct evsel *ev) +{ + ev->cpu_index++; +} + void evlist__disable(struct evlist *evlist) { struct evsel *pos; diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h index 13051409fd22..c1deb8ebdcea 100644 --- a/tools/perf/util/evlist.h +++ b/tools/perf/util/evlist.h @@ -336,6 +336,10 @@ void perf_evlist__to_front(struct evlist *evlist, void perf_evlist__set_tracking_event(struct evlist *evlist, struct evsel *tracking_evsel); +struct perf_cpu_map *evlist__cpu_iter_start(struct evlist *evlist); +bool evlist__cpu_iter_skip(struct evsel *ev, int cpu); +void evlist__cpu_iter_next(struct evsel *ev); + struct evsel * perf_evlist__find_evsel_by_str(struct evlist *evlist, const char *str); diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h index ddc5ee6f6592..cf90019ae744 100644 --- a/tools/perf/util/evsel.h +++ b/tools/perf/util/evsel.h @@ -95,6 +95,7 @@ struct evsel { bool collect_stat; bool weak_group; bool percore; + int cpu_index; const char *pmu_name; struct { perf_evsel__sb_cb_t *cb; -- 2.21.0
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