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-rw-r--r--tools/perf/util/evlist.c2
-rw-r--r--tools/perf/util/evsel.c2
-rw-r--r--tools/perf/util/evsel.h4
3 files changed, 8 insertions, 0 deletions
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index e9a5d432902c..8d00039d6a20 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -98,6 +98,7 @@ static void perf_evlist__purge(struct perf_evlist *evlist)
evlist__for_each_safe(evlist, n, pos) {
list_del_init(&pos->node);
+ pos->evlist = NULL;
perf_evsel__delete(pos);
}
@@ -125,6 +126,7 @@ void perf_evlist__delete(struct perf_evlist *evlist)
void perf_evlist__add(struct perf_evlist *evlist, struct perf_evsel *entry)
{
+ entry->evlist = evlist;
list_add_tail(&entry->node, &evlist->entries);
entry->idx = evlist->nr_entries;
entry->tracking = !entry->idx;
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index b096ef7a240c..bac25f41a751 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -206,6 +206,7 @@ void perf_evsel__init(struct perf_evsel *evsel,
evsel->leader = evsel;
evsel->unit = "";
evsel->scale = 1.0;
+ evsel->evlist = NULL;
INIT_LIST_HEAD(&evsel->node);
INIT_LIST_HEAD(&evsel->config_terms);
perf_evsel__object.init(evsel);
@@ -1026,6 +1027,7 @@ void perf_evsel__close_fd(struct perf_evsel *evsel, int ncpus, int nthreads)
void perf_evsel__exit(struct perf_evsel *evsel)
{
assert(list_empty(&evsel->node));
+ assert(evsel->evlist == NULL);
perf_evsel__free_fd(evsel);
perf_evsel__free_id(evsel);
perf_evsel__free_config_terms(evsel);
diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
index 93ac6b128149..298e6bbca200 100644
--- a/tools/perf/util/evsel.h
+++ b/tools/perf/util/evsel.h
@@ -60,6 +60,9 @@ struct perf_evsel_config_term {
/** struct perf_evsel - event selector
*
+ * @evlist - evlist this evsel is in, if it is in one.
+ * @node - To insert it into evlist->entries or in other list_heads, say in
+ * the event parsing routines.
* @name - Can be set to retain the original event name passed by the user,
* so that when showing results in tools such as 'perf stat', we
* show the name used, not some alias.
@@ -73,6 +76,7 @@ struct perf_evsel_config_term {
*/
struct perf_evsel {
struct list_head node;
+ struct perf_evlist *evlist;
struct perf_event_attr attr;
char *filter;
struct xyarray *fd;