[PATCH 072/107] libperf: Add perf_evlist__new() function

Arnaldo Carvalho de Melo
2019-07-30T03:00:29Z

Add perf_evlist__new() function to create and init a perf_evlist struct
dynamicaly.

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/20190721112506.12306-46-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/lib/evlist.c | 11 +++++++++++
tools/perf/lib/include/perf/evlist.h | 1 +
tools/perf/lib/libperf.map | 1 +
3 files changed, 13 insertions(+)

diff --git a/tools/perf/lib/evlist.c b/tools/perf/lib/evlist.c
index 1b27fd2de9b9..0517deb4cb1c 100644
--- a/tools/perf/lib/evlist.c
+++ b/tools/perf/lib/evlist.c
@@ -3,6 +3,7 @@
#include <linux/list.h>
#include <internal/evlist.h>
#include <internal/evsel.h>
+#include <linux/zalloc.h>

void perf_evlist__init(struct perf_evlist *evlist)
{
@@ -23,3 +24,13 @@ void perf_evlist__remove(struct perf_evlist *evlist,
list_del_init(&evsel->node);
evlist->nr_entries -= 1;
}
+
+struct perf_evlist *perf_evlist__new(void)
+{
+ struct perf_evlist *evlist = zalloc(sizeof(*evlist));
+
+ if (evlist != NULL)
+ perf_evlist__init(evlist);
+
+ return evlist;
+}
diff --git a/tools/perf/lib/include/perf/evlist.h b/tools/perf/lib/include/perf/evlist.h
index e0c87995c6ff..7255a60869a1 100644
--- a/tools/perf/lib/include/perf/evlist.h
+++ b/tools/perf/lib/include/perf/evlist.h
@@ -12,5 +12,6 @@ LIBPERF_API void perf_evlist__add(struct perf_evlist *evlist,
struct perf_evsel *evsel);
LIBPERF_API void perf_evlist__remove(struct perf_evlist *evlist,
struct perf_evsel *evsel);
+LIBPERF_API struct perf_evlist *perf_evlist__new(void);

#endif /* __LIBPERF_EVLIST_H */
diff --git a/tools/perf/lib/libperf.map b/tools/perf/lib/libperf.map
index e38473a8f32f..5e685d6c7a95 100644
--- a/tools/perf/lib/libperf.map
+++ b/tools/perf/lib/libperf.map
@@ -12,6 +12,7 @@ LIBPERF_0.0.1 {
perf_thread_map__get;
perf_thread_map__put;
perf_evsel__init;
+ perf_evlist__new;
perf_evlist__init;
perf_evlist__add;
perf_evlist__remove;
--
2.21.0