diff options
Diffstat (limited to 'tools/perf/util/evlist.c')
| -rw-r--r-- | tools/perf/util/evlist.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index 6d4129214ee8..deb82a4fc312 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -3,11 +3,18 @@ #include "evsel.h" #include "util.h" +#include <linux/bitops.h> +#include <linux/hash.h> + struct perf_evlist *perf_evlist__new(void) { struct perf_evlist *evlist = zalloc(sizeof(*evlist)); if (evlist != NULL) { + int i; + + for (i = 0; i < PERF_EVLIST__HLIST_SIZE; ++i) + INIT_HLIST_HEAD(&evlist->heads[i]); INIT_LIST_HEAD(&evlist->entries); } @@ -29,6 +36,7 @@ static void perf_evlist__purge(struct perf_evlist *evlist) void perf_evlist__delete(struct perf_evlist *evlist) { perf_evlist__purge(evlist); + free(evlist->mmap); free(evlist->pollfd); free(evlist); } @@ -68,3 +76,22 @@ void perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd) evlist->pollfd[evlist->nr_fds].events = POLLIN; evlist->nr_fds++; } + +struct perf_evsel *perf_evlist__id2evsel(struct perf_evlist *evlist, u64 id) +{ + struct hlist_head *head; + struct hlist_node *pos; + struct perf_sample_id *sid; + int hash; + + if (evlist->nr_entries == 1) + return list_entry(evlist->entries.next, struct perf_evsel, node); + + hash = hash_64(id, PERF_EVLIST__HLIST_BITS); + head = &evlist->heads[hash]; + + hlist_for_each_entry(sid, pos, head, node) + if (sid->id == id) + return sid->evsel; + return NULL; +} |