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authorJiri Olsa <jolsa@redhat.com>2012-10-11 14:10:35 +0200
committerArnaldo Carvalho de Melo <acme@redhat.com>2013-08-07 17:35:21 -0300
commit932a35940a3f03613796ab4855ecbb214dbdc0c2 (patch)
treecc8ad74e0063f2afd511799c6564984fe903b486 /tools/perf/util/evlist.c
parentc4861afe30aa3b00c95f9389f24cf6ede88416e4 (diff)
downloadblackbird-op-linux-932a35940a3f03613796ab4855ecbb214dbdc0c2.tar.gz
blackbird-op-linux-932a35940a3f03613796ab4855ecbb214dbdc0c2.zip
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@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/n/tip-twmlgsbyim97p7cyohjwb1df@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/evlist.c')
-rw-r--r--tools/perf/util/evlist.c21
1 files changed, 16 insertions, 5 deletions
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index 10fcc0372aa9..da2dd92d5b27 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);
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