diff options
| -rw-r--r-- | tools/perf/util/evsel.c | 17 | ||||
| -rw-r--r-- | tools/perf/util/evsel.h | 2 |
2 files changed, 19 insertions, 0 deletions
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index ae925b9ce6dd..6cc97f37887d 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -836,6 +836,23 @@ int perf_evsel__set_filter(struct perf_evsel *evsel, const char *filter) return -1; } +int perf_evsel__append_filter(struct perf_evsel *evsel, + const char *op, const char *filter) +{ + char *new_filter; + + if (evsel->filter == NULL) + return perf_evsel__set_filter(evsel, filter); + + if (asprintf(&new_filter,"(%s) %s (%s)", evsel->filter, op, filter) > 0) { + free(evsel->filter); + evsel->filter = new_filter; + return 0; + } + + return -1; +} + int perf_evsel__enable(struct perf_evsel *evsel, int ncpus, int nthreads) { return perf_evsel__run_ioctl(evsel, ncpus, nthreads, diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h index 8aea4baca080..fe9f3279632b 100644 --- a/tools/perf/util/evsel.h +++ b/tools/perf/util/evsel.h @@ -183,6 +183,8 @@ void perf_evsel__set_sample_id(struct perf_evsel *evsel, bool use_sample_identifier); int perf_evsel__set_filter(struct perf_evsel *evsel, const char *filter); +int perf_evsel__append_filter(struct perf_evsel *evsel, + const char *op, const char *filter); int perf_evsel__apply_filter(struct perf_evsel *evsel, int ncpus, int nthreads, const char *filter); int perf_evsel__enable(struct perf_evsel *evsel, int ncpus, int nthreads); |