[PATCH 5/7] libperf: Add perf_evlist__set_leader function

From: Jiri Olsa <jolsa@redhat.com>
To: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: lkml <linux-kernel@vger.kernel.org>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>,
	Ingo Molnar <mingo@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Namhyung Kim <namhyung@kernel.org>,
	Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Michael Petlan <mpetlan@redhat.com>,
	Ian Rogers <irogers@google.com>,
	nakamura.shun@fujitsu.com, linux-perf-users@vger.kernel.org
Subject: [PATCH 5/7] libperf: Add perf_evlist__set_leader function
Date: Tue,  6 Jul 2021 17:17:02 +0200	[thread overview]
Message-ID: <20210706151704.73662-6-jolsa@kernel.org> (raw)
In-Reply-To: <20210706151704.73662-1-jolsa@kernel.org>

Moving the implementation of evlist__set_leader under
the new libperf perf_evlist__set_leader function with
the same functionality and as exported API.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
 tools/lib/perf/evlist.c                  | 21 +++++++++++++++++++++
 tools/lib/perf/include/internal/evlist.h |  1 +
 tools/lib/perf/include/perf/evlist.h     |  1 +
 tools/lib/perf/libperf.map               |  1 +
 tools/perf/util/evlist.c                 | 19 +------------------
 tools/perf/util/evlist.h                 |  1 -
 tools/perf/util/parse-events.c           |  2 +-
 7 files changed, 26 insertions(+), 20 deletions(-)

diff --git a/tools/lib/perf/evlist.c b/tools/lib/perf/evlist.c
index 68b90bbf0ffb..e37dfad31383 100644
--- a/tools/lib/perf/evlist.c
+++ b/tools/lib/perf/evlist.c
@@ -642,3 +642,24 @@ perf_evlist__next_mmap(struct perf_evlist *evlist, struct perf_mmap *map,
 
 	return overwrite ? evlist->mmap_ovw_first : evlist->mmap_first;
 }
+
+void __perf_evlist__set_leader(struct list_head *list)
+{
+	struct perf_evsel *evsel, *leader;
+
+	leader = list_entry(list->next, struct perf_evsel, node);
+	evsel = list_entry(list->prev, struct perf_evsel, node);
+
+	leader->nr_members = evsel->idx - leader->idx + 1;
+
+	__perf_evlist__for_each_entry(list, evsel)
+		evsel->leader = leader;
+}
+
+void perf_evlist__set_leader(struct perf_evlist *evlist)
+{
+	if (evlist->nr_entries) {
+		evlist->nr_groups = evlist->nr_entries > 1 ? 1 : 0;
+		__perf_evlist__set_leader(&evlist->entries);
+	}
+}
diff --git a/tools/lib/perf/include/internal/evlist.h b/tools/lib/perf/include/internal/evlist.h
index f16fa9877d27..f366dbad6a88 100644
--- a/tools/lib/perf/include/internal/evlist.h
+++ b/tools/lib/perf/include/internal/evlist.h
@@ -127,4 +127,5 @@ int perf_evlist__id_add_fd(struct perf_evlist *evlist,
 
 void perf_evlist__reset_id_hash(struct perf_evlist *evlist);
 
+void __perf_evlist__set_leader(struct list_head *list);
 #endif /* __LIBPERF_INTERNAL_EVLIST_H */
diff --git a/tools/lib/perf/include/perf/evlist.h b/tools/lib/perf/include/perf/evlist.h
index 0a7479dc13bf..9ca399d49bb4 100644
--- a/tools/lib/perf/include/perf/evlist.h
+++ b/tools/lib/perf/include/perf/evlist.h
@@ -46,4 +46,5 @@ LIBPERF_API struct perf_mmap *perf_evlist__next_mmap(struct perf_evlist *evlist,
 	     (pos) != NULL;						\
 	     (pos) = perf_evlist__next_mmap((evlist), (pos), overwrite))
 
+LIBPERF_API void perf_evlist__set_leader(struct perf_evlist *evlist);
 #endif /* __LIBPERF_EVLIST_H */
diff --git a/tools/lib/perf/libperf.map b/tools/lib/perf/libperf.map
index c0c7ceb11060..71468606e8a7 100644
--- a/tools/lib/perf/libperf.map
+++ b/tools/lib/perf/libperf.map
@@ -45,6 +45,7 @@ LIBPERF_0.0.1 {
 		perf_evlist__munmap;
 		perf_evlist__filter_pollfd;
 		perf_evlist__next_mmap;
+		perf_evlist__set_leader;
 		perf_mmap__consume;
 		perf_mmap__read_init;
 		perf_mmap__read_done;
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index 752f64afd622..47581a237c7a 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -223,26 +223,9 @@ int __evlist__set_tracepoints_handlers(struct evlist *evlist,
 	return err;
 }
 
-void __evlist__set_leader(struct list_head *list)
-{
-	struct evsel *evsel, *leader;
-
-	leader = list_entry(list->next, struct evsel, core.node);
-	evsel = list_entry(list->prev, struct evsel, core.node);
-
-	leader->core.nr_members = evsel->core.idx - leader->core.idx + 1;
-
-	__evlist__for_each_entry(list, evsel) {
-		evsel->core.leader = &leader->core;
-	}
-}
-
 void evlist__set_leader(struct evlist *evlist)
 {
-	if (evlist->core.nr_entries) {
-		evlist->core.nr_groups = evlist->core.nr_entries > 1 ? 1 : 0;
-		__evlist__set_leader(&evlist->core.entries);
-	}
+	perf_evlist__set_leader(&evlist->core);
 }
 
 int __evlist__add_default(struct evlist *evlist, bool precise)
diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h
index cb2bf5f4866a..5c22383489ae 100644
--- a/tools/perf/util/evlist.h
+++ b/tools/perf/util/evlist.h
@@ -201,7 +201,6 @@ void evlist__set_selected(struct evlist *evlist, struct evsel *evsel);
 int evlist__create_maps(struct evlist *evlist, struct target *target);
 int evlist__apply_filters(struct evlist *evlist, struct evsel **err_evsel);
 
-void __evlist__set_leader(struct list_head *list);
 void evlist__set_leader(struct evlist *evlist);
 
 u64 __evlist__combined_sample_type(struct evlist *evlist);
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index f6d77cb44007..e5eae23cfceb 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -1833,7 +1833,7 @@ void parse_events__set_leader(char *name, struct list_head *list,
 	if (parse_events__set_leader_for_uncore_aliase(name, list, parse_state))
 		return;
 
-	__evlist__set_leader(list);
+	__perf_evlist__set_leader(list);
 	leader = list_entry(list->next, struct evsel, core.node);
 	leader->group_name = name ? strdup(name) : NULL;
 }
-- 
2.31.1

