perf evsel: Delete the event selectors at exit

Freeing all the possibly allocated resources, reducing complexity
on each tool exit path.

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

6 files changed, 16 insertions, 8 deletions

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index e68aee33bc19..052de1780f76 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -965,8 +965,6 @@ int cmd_record(int argc, const char **argv, const char *prefix __used)
 out_free_event_array:
         free(event_array);
 out_free_fd:
-        list_for_each_entry(pos, &evsel_list, node)
-                perf_evsel__free_fd(pos);
         free(all_tids);
         all_tids = NULL;
 out_symbol_exit:
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 3e5f356a5241..589ba3a92423 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -844,10 +844,8 @@ int cmd_stat(int argc, const char **argv, const char *prefix __used)
         if (status != -1)
                 print_stat(argc, argv);
 out_free_fd:
-        list_for_each_entry(pos, &evsel_list, node) {
-                perf_evsel__free_fd(pos);
+        list_for_each_entry(pos, &evsel_list, node)
                 perf_evsel__free_stat_priv(pos);
-        }
 out:
         return status;
 }
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 13a836efa1e1..27b9c14a0a07 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -1495,10 +1495,8 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
 
         status = __cmd_top();
 out_free_fd:
-        list_for_each_entry(pos, &evsel_list, node) {
-                perf_evsel__free_fd(pos);
+        list_for_each_entry(pos, &evsel_list, node)
                 perf_evsel__free_mmap(pos);
-        }
 
         return status;
 }
diff --git a/tools/perf/perf.c b/tools/perf/perf.c
index 595d0f4a7103..5b1ecd66bb36 100644
--- a/tools/perf/perf.c
+++ b/tools/perf/perf.c
@@ -286,6 +286,8 @@ static int run_builtin(struct cmd_struct *p, int argc, const char **argv)
         status = p->fn(argc, argv, prefix);
         exit_browser(status);
 
+        perf_evsel_list__delete();
+
         if (status)
                 return status & 0xff;
 
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 2d948ad471f4..3a142e90d609 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -982,3 +982,14 @@ int perf_evsel_list__create_default(void)
         ++nr_counters;
         return 0;
 }
+
+void perf_evsel_list__delete(void)
+{
+        struct perf_evsel *pos, *n;
+
+        list_for_each_entry_safe(pos, n, &evsel_list, node) {
+                list_del_init(&pos->node);
+                perf_evsel__delete(pos);
+        }
+        nr_counters = 0;
+}
diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h
index 0f915a01a3f7..0a0abc1d10eb 100644
--- a/tools/perf/util/parse-events.h
+++ b/tools/perf/util/parse-events.h
@@ -12,6 +12,7 @@ struct perf_evsel;
 extern struct list_head evsel_list;
 
 int perf_evsel_list__create_default(void);
+void perf_evsel_list__delete(void);
 
 struct option;