diff --git a/tools/perf/lib/evlist.c b/tools/perf/lib/evlist.c index 0517deb4cb1c7453bc98ce47b7687c0d38c7b64e..979ee423490f1a7afd85b518f44cc502cf52d027 100644 --- a/tools/perf/lib/evlist.c +++ b/tools/perf/lib/evlist.c @@ -34,3 +34,23 @@ struct perf_evlist *perf_evlist__new(void) return evlist; } + +struct perf_evsel * +perf_evlist__next(struct perf_evlist *evlist, struct perf_evsel *prev) +{ + struct perf_evsel *next; + + if (!prev) { + next = list_first_entry(&evlist->entries, + struct perf_evsel, + node); + } else { + next = list_next_entry(prev, node); + } + + /* Empty list is noticed here so don't need checking on entry. */ + if (&next->node == &evlist->entries) + return NULL; + + return next; +} diff --git a/tools/perf/lib/include/perf/evlist.h b/tools/perf/lib/include/perf/evlist.h index 7255a60869a18321d53429158635bead9627873f..5092b622935b21d1d4423cad9cbbf041939cc16e 100644 --- a/tools/perf/lib/include/perf/evlist.h +++ b/tools/perf/lib/include/perf/evlist.h @@ -13,5 +13,12 @@ LIBPERF_API void perf_evlist__add(struct perf_evlist *evlist, LIBPERF_API void perf_evlist__remove(struct perf_evlist *evlist, struct perf_evsel *evsel); LIBPERF_API struct perf_evlist *perf_evlist__new(void); +LIBPERF_API struct perf_evsel* perf_evlist__next(struct perf_evlist *evlist, + struct perf_evsel *evsel); + +#define perf_evlist__for_each_evsel(evlist, pos) \ + for ((pos) = perf_evlist__next((evlist), NULL); \ + (pos) != NULL; \ + (pos) = perf_evlist__next((evlist), (pos))) #endif /* __LIBPERF_EVLIST_H */ diff --git a/tools/perf/lib/libperf.map b/tools/perf/lib/libperf.map index e3eac9b607264a096401d31e40884fa29f934795..c0968226f7b6cde1adcb5b60673ba53ea13318ca 100644 --- a/tools/perf/lib/libperf.map +++ b/tools/perf/lib/libperf.map @@ -17,6 +17,7 @@ LIBPERF_0.0.1 { perf_evlist__init; perf_evlist__add; perf_evlist__remove; + perf_evlist__next; local: *; };