libperf: Adopt evlist__set_leader() from tools/perf as perf_evlist__set_leader()

Move the implementation of evlist__set_leader() to a new libperf
perf_evlist__set_leader() function with the same functionality make it a
libperf exported API.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Requested-by: Shunsuke Nakamura <nakamura.shun@fujitsu.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20210706151704.73662-6-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/lib/perf/evlist.c b/tools/lib/perf/evlist.c
index 68b90bb..e37dfad 100644 (file)
--- 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 f16fa98..f366dba 100644 (file)
--- 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 0a7479d..9ca399d 100644 (file)
--- 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 c0c7ceb..7146860 100644 (file)
--- 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 752f64a..47581a2 100644 (file)
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -223,26 +223,9 @@ out:
        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 cb2bf5f..5c22383 100644 (file)
--- 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 f6d77cb..e5eae23 100644 (file)
--- 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;
 }