libperf: Add perf_evlist__remove() function

Adding perf_evlist__remove() function to remove a perf_evsel from
a perf_evlist struct.

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/20190721112506.12306-41-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

3 files changed, 9 insertions, 0 deletions

diff --git a/tools/perf/lib/evlist.c b/tools/perf/lib/evlist.c
index e5f187fa4e57..023fe4b44131 100644
--- a/tools/perf/lib/evlist.c
+++ b/tools/perf/lib/evlist.c
@@ -14,3 +14,9 @@ void perf_evlist__add(struct perf_evlist *evlist,
 {
         list_add_tail(&evsel->node, &evlist->entries);
 }
+
+void perf_evlist__remove(struct perf_evlist *evlist,
+                         struct perf_evsel *evsel)
+{
+        list_del_init(&evsel->node);
+}
diff --git a/tools/perf/lib/include/perf/evlist.h b/tools/perf/lib/include/perf/evlist.h
index 6992568b14a0..e0c87995c6ff 100644
--- a/tools/perf/lib/include/perf/evlist.h
+++ b/tools/perf/lib/include/perf/evlist.h
@@ -10,5 +10,7 @@ struct perf_evsel;
 LIBPERF_API void perf_evlist__init(struct perf_evlist *evlist);
 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);
 
 #endif /* __LIBPERF_EVLIST_H */
diff --git a/tools/perf/lib/libperf.map b/tools/perf/lib/libperf.map
index 06ccf31eb24d..168339f89a2e 100644
--- a/tools/perf/lib/libperf.map
+++ b/tools/perf/lib/libperf.map
@@ -12,6 +12,7 @@ LIBPERF_0.0.1 {
                 perf_evsel__init;
                 perf_evlist__init;
                 perf_evlist__add;
+                perf_evlist__remove;
         local:
                 *;
 };