diff options
| -rw-r--r-- | tools/perf/util/stat.c | 20 | ||||
| -rw-r--r-- | tools/perf/util/stat.h | 1 |
2 files changed, 21 insertions, 0 deletions
diff --git a/tools/perf/util/stat.c b/tools/perf/util/stat.c index aadc723ce871..d23109c9bee9 100644 --- a/tools/perf/util/stat.c +++ b/tools/perf/util/stat.c @@ -249,6 +249,26 @@ void perf_evlist__copy_prev_raw_counts(struct evlist *evlist) perf_evsel__copy_prev_raw_counts(evsel); } +void perf_evlist__save_aggr_prev_raw_counts(struct evlist *evlist) +{ + struct evsel *evsel; + + /* + * To collect the overall statistics for interval mode, + * we copy the counts from evsel->prev_raw_counts to + * evsel->counts. The perf_stat_process_counter creates + * aggr values from per cpu values, but the per cpu values + * are 0 for AGGR_GLOBAL. So we use a trick that saves the + * previous aggr value to the first member of perf_counts, + * then aggr calculation in process_counter_values can work + * correctly. + */ + evlist__for_each_entry(evlist, evsel) { + *perf_counts(evsel->prev_raw_counts, 0, 0) = + evsel->prev_raw_counts->aggr; + } +} + static void zero_per_pkg(struct evsel *counter) { if (counter->per_pkg_mask) diff --git a/tools/perf/util/stat.h b/tools/perf/util/stat.h index 62cf72c71869..18ead55756cc 100644 --- a/tools/perf/util/stat.h +++ b/tools/perf/util/stat.h @@ -199,6 +199,7 @@ void perf_evlist__free_stats(struct evlist *evlist); void perf_evlist__reset_stats(struct evlist *evlist); void perf_evlist__reset_prev_raw_counts(struct evlist *evlist); void perf_evlist__copy_prev_raw_counts(struct evlist *evlist); +void perf_evlist__save_aggr_prev_raw_counts(struct evlist *evlist); int perf_stat_process_counter(struct perf_stat_config *config, struct evsel *counter); |