libperf: Add perf_evlist__delete() function

Add the perf_evlist__delete() function to delete a perf_evlist instance.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190721112506.12306-49-jolsa@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/lib/evlist.c

@@ -4,6 +4,7 @@
 #include <internal/evlist.h>
 #include <internal/evsel.h>
 #include <linux/zalloc.h>
+#include <stdlib.h>
 
 void perf_evlist__init(struct perf_evlist *evlist)
 {
@@ -54,3 +55,8 @@ perf_evlist__next(struct perf_evlist *evlist, struct perf_evsel *prev)
 
 	return next;
 }
+
+void perf_evlist__delete(struct perf_evlist *evlist)
+{
+	free(evlist);
+}

tools/perf/lib/include/perf/evlist.h

@@ -13,6 +13,7 @@ LIBPERF_API void perf_evlist__add(struct perf_evlist *evlist,
 LIBPERF_API void perf_evlist__remove(struct perf_evlist *evlist,
 				     struct perf_evsel *evsel);
 LIBPERF_API struct perf_evlist *perf_evlist__new(void);
+LIBPERF_API void perf_evlist__delete(struct perf_evlist *evlist);
 LIBPERF_API struct perf_evsel* perf_evlist__next(struct perf_evlist *evlist,
 						 struct perf_evsel *evsel);
 

tools/perf/lib/libperf.map

@@ -14,6 +14,7 @@ LIBPERF_0.0.1 {
 		perf_evsel__new;
 		perf_evsel__init;
 		perf_evlist__new;
+		perf_evlist__delete;
 		perf_evlist__init;
 		perf_evlist__add;
 		perf_evlist__remove;