libperf: Move 'nr_groups' from tools/perf to evlist::nr_groups

Move evsel::nr_groups to perf_evsel::nr_groups, so we can move the group
interface to libperf.

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/20210706151704.73662-5-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

5 files changed, 6 insertions, 7 deletions

diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index 9cb663882273..752f64afd622 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -240,7 +240,7 @@ void __evlist__set_leader(struct list_head *list)
 void evlist__set_leader(struct evlist *evlist)
 {
 	if (evlist->core.nr_entries) {
-		evlist->nr_groups = evlist->core.nr_entries > 1 ? 1 : 0;
+		evlist->core.nr_groups = evlist->core.nr_entries > 1 ? 1 : 0;
 		__evlist__set_leader(&evlist->core.entries);
 	}
 }
@@ -1748,7 +1748,7 @@ bool evlist__exclude_kernel(struct evlist *evlist)
  */
 void evlist__force_leader(struct evlist *evlist)
 {
-	if (!evlist->nr_groups) {
+	if (!evlist->core.nr_groups) {
 		struct evsel *leader = evlist__first(evlist);
 
 		evlist__set_leader(evlist);
diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h
index 2073cfa79f79..cb2bf5f4866a 100644
--- a/tools/perf/util/evlist.h
+++ b/tools/perf/util/evlist.h
@@ -50,7 +50,6 @@ enum bkw_mmap_state {
 
 struct evlist {
 	struct perf_evlist core;
-	int		 nr_groups;
 	bool		 enabled;
 	int		 id_pos;
 	int		 is_pos;
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index a1056540c13b..44249027507a 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -778,7 +778,7 @@ static int write_pmu_mappings(struct feat_fd *ff,
 static int write_group_desc(struct feat_fd *ff,
 			    struct evlist *evlist)
 {
-	u32 nr_groups = evlist->nr_groups;
+	u32 nr_groups = evlist->core.nr_groups;
 	struct evsel *evsel;
 	int ret;
 
@@ -2735,7 +2735,7 @@ static int process_group_desc(struct feat_fd *ff, void *data __maybe_unused)
 	 * Rebuild group relationship based on the group_desc
 	 */
 	session = container_of(ff->ph, struct perf_session, header);
-	session->evlist->nr_groups = nr_groups;
+	session->evlist->core.nr_groups = nr_groups;
 
 	i = nr = 0;
 	evlist__for_each_entry(session->evlist, evsel) {
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 6fb1830097cb..f6d77cb44007 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -2285,7 +2285,7 @@ int __parse_events(struct evlist *evlist, const char *str,
 	if (!ret) {
 		struct evsel *last;
 
-		evlist->nr_groups += parse_state.nr_groups;
+		evlist->core.nr_groups += parse_state.nr_groups;
 		last = evlist__last(evlist);
 		last->cmdline_group_boundary = true;
 
diff --git a/tools/perf/util/pfm.c b/tools/perf/util/pfm.c
index 6eef6dfeaa57..dd9ed56e0504 100644
--- a/tools/perf/util/pfm.c
+++ b/tools/perf/util/pfm.c
@@ -110,7 +110,7 @@ int parse_libpfm_events_option(const struct option *opt, const char *str,
 				   "cannot close a non-existing event group\n");
 				goto error;
 			}
-			evlist->nr_groups++;
+			evlist->core.nr_groups++;
 			grp_leader = NULL;
 			grp_evt = -1;
 		}