perf_evlist__strerror_mmap 3533 tools/perf/builtin-trace.c 	perf_evlist__strerror_mmap(evlist, errno, errbuf, sizeof(errbuf));
perf_evlist__strerror_mmap  252 tools/perf/util/evlist.h int perf_evlist__strerror_mmap(struct evlist *evlist, int err, char *buf, size_t size);