Commit-ID: 932a35940a3f03613796ab4855ecbb214dbdc0c2
Gitweb: http://git.kernel.org/tip/932a35940a3f03613796ab4855ecbb214dbdc0c2
Author: Jiri Olsa <jolsa@xxxxxxxxxx>
AuthorDate: Thu, 11 Oct 2012 14:10:35 +0200
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Wed, 7 Aug 2013 17:35:21 -0300
perf evlist: Add perf_evlist__id2sid method to get event ID related data
This will be helpful for PERF_FORMAT_GROUP samples where we need to
store ID related period value for each event.
Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Acked-by: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Corey Ashford <cjashfor@xxxxxxxxxxxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Link: http://lkml.kernel.org/n/tip-twmlgsbyim97p7cyohjwb1df@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/util/evlist.c | 21 ++++++++++++++++-----
tools/perf/util/evlist.h | 2 ++
2 files changed, 18 insertions(+), 5 deletions(-)
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index 10fcc03..da2dd92 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -337,21 +337,32 @@ static int perf_evlist__id_add_fd(struct perf_evlist *evlist,
return 0;
}
-struct perf_evsel *perf_evlist__id2evsel(struct perf_evlist *evlist, u64 id)
+struct perf_sample_id *perf_evlist__id2sid(struct perf_evlist *evlist, u64 id)
{
struct hlist_head *head;
struct perf_sample_id *sid;
int hash;
- if (evlist->nr_entries == 1)
- return perf_evlist__first(evlist);
-
hash = hash_64(id, PERF_EVLIST__HLIST_BITS);
head = &evlist->heads[hash];
hlist_for_each_entry(sid, head, node)
if (sid->id == id)
- return sid->evsel;
+ return sid;
+
+ return NULL;
+}
+
+struct perf_evsel *perf_evlist__id2evsel(struct perf_evlist *evlist, u64 id)
+{
+ struct perf_sample_id *sid;
+
+ if (evlist->nr_entries == 1)
+ return perf_evlist__first(evlist);
+
+ sid = perf_evlist__id2sid(evlist, id);
+ if (sid)
+ return sid->evsel;
if (!perf_evlist__sample_id_all(evlist))
return perf_evlist__first(evlist);
diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h
index c7178b7..327abab 100644
--- a/tools/perf/util/evlist.h
+++ b/tools/perf/util/evlist.h
@@ -78,6 +78,8 @@ void perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd);
struct perf_evsel *perf_evlist__id2evsel(struct perf_evlist *evlist, u64 id);
+struct perf_sample_id *perf_evlist__id2sid(struct perf_evlist *evlist, u64 id);
+
union perf_event *perf_evlist__mmap_read(struct perf_evlist *self, int idx);
int perf_evlist__open(struct perf_evlist *evlist);
--
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