diff options
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/util/callchain.c | 35 | ||||
| -rw-r--r-- | tools/perf/util/callchain.h | 6 |
2 files changed, 41 insertions, 0 deletions
diff --git a/tools/perf/util/callchain.c b/tools/perf/util/callchain.c index 6d075648d2cc..0d608e875fe9 100644 --- a/tools/perf/util/callchain.c +++ b/tools/perf/util/callchain.c @@ -1797,3 +1797,38 @@ s64 callchain_avg_cycles(struct callchain_node *cnode) return cycles; } + +int sample__for_each_callchain_node(struct thread *thread, struct evsel *evsel, + struct perf_sample *sample, int max_stack, + callchain_iter_fn cb, void *data) +{ + struct callchain_cursor *cursor = get_tls_callchain_cursor(); + int ret; + + if (!cursor) + return -ENOMEM; + + /* Fill in the callchain. */ + ret = thread__resolve_callchain(thread, cursor, evsel, sample, + /*parent=*/NULL, /*root_al=*/NULL, + max_stack); + if (ret) + return ret; + + /* Switch from writing the callchain to reading it. */ + callchain_cursor_commit(cursor); + + while (1) { + struct callchain_cursor_node *node = callchain_cursor_current(cursor); + + if (!node) + break; + + ret = cb(node, data); + if (ret) + return ret; + + callchain_cursor_advance(cursor); + } + return 0; +} diff --git a/tools/perf/util/callchain.h b/tools/perf/util/callchain.h index d5c66345ae31..76891f8e2373 100644 --- a/tools/perf/util/callchain.h +++ b/tools/perf/util/callchain.h @@ -311,4 +311,10 @@ u64 callchain_total_hits(struct hists *hists); s64 callchain_avg_cycles(struct callchain_node *cnode); +typedef int (*callchain_iter_fn)(struct callchain_cursor_node *node, void *data); + +int sample__for_each_callchain_node(struct thread *thread, struct evsel *evsel, + struct perf_sample *sample, int max_stack, + callchain_iter_fn cb, void *data); + #endif /* __PERF_CALLCHAIN_H */ |