diff --git a/tools/perf/util/auxtrace.c b/tools/perf/util/auxtrace.c
index b446cfa66469..ac4e4660932d 100644
--- a/tools/perf/util/auxtrace.c
+++ b/tools/perf/util/auxtrace.c
@@ -169,9 +169,10 @@ void auxtrace_mmap_params__init(struct auxtrace_mmap_params *mp,
 
 void auxtrace_mmap_params__set_idx(struct auxtrace_mmap_params *mp,
 				   struct evlist *evlist,
-				   struct evsel *evsel, int idx,
-				   bool per_cpu)
+				   struct evsel *evsel, int idx)
 {
+	bool per_cpu = !perf_cpu_map__empty(evlist->core.user_requested_cpus);
+
 	mp->mmap_needed = evsel->needs_auxtrace_mmap;
 
 	if (!mp->mmap_needed)
diff --git a/tools/perf/util/auxtrace.h b/tools/perf/util/auxtrace.h
index 695591b73ae1..cd0d25c2751c 100644
--- a/tools/perf/util/auxtrace.h
+++ b/tools/perf/util/auxtrace.h
@@ -496,8 +496,7 @@ void auxtrace_mmap_params__init(struct auxtrace_mmap_params *mp,
 				bool auxtrace_overwrite);
 void auxtrace_mmap_params__set_idx(struct auxtrace_mmap_params *mp,
 				   struct evlist *evlist,
-				   struct evsel *evsel, int idx,
-				   bool per_cpu);
+				   struct evsel *evsel, int idx);
 
 typedef int (*process_auxtrace_t)(struct perf_tool *tool,
 				  struct mmap *map,
@@ -870,8 +869,7 @@ void auxtrace_mmap_params__init(struct auxtrace_mmap_params *mp,
 				bool auxtrace_overwrite);
 void auxtrace_mmap_params__set_idx(struct auxtrace_mmap_params *mp,
 				   struct evlist *evlist,
-				   struct evsel *evsel, int idx,
-				   bool per_cpu);
+				   struct evsel *evsel, int idx);
 
 #define ITRACE_HELP ""
 
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index 9e0fabfb096d..157867bc337a 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -753,10 +753,9 @@ perf_evlist__mmap_cb_idx(struct perf_evlist *_evlist,
 {
 	struct evlist *evlist = container_of(_evlist, struct evlist, core);
 	struct mmap_params *mp = container_of(_mp, struct mmap_params, core);
-	bool per_cpu = !perf_cpu_map__empty(_evlist->user_requested_cpus);
 	struct evsel *evsel = container_of(_evsel, struct evsel, core);
 
-	auxtrace_mmap_params__set_idx(&mp->auxtrace_mp, evlist, evsel, idx, per_cpu);
+	auxtrace_mmap_params__set_idx(&mp->auxtrace_mp, evlist, evsel, idx);
 }
 
 static struct perf_mmap*
diff --git a/tools/perf/util/mmap.c b/tools/perf/util/mmap.c
index de59c4da852b..a4dff881be39 100644
--- a/tools/perf/util/mmap.c
+++ b/tools/perf/util/mmap.c
@@ -63,8 +63,7 @@ void __weak auxtrace_mmap_params__init(struct auxtrace_mmap_params *mp __maybe_u
 void __weak auxtrace_mmap_params__set_idx(struct auxtrace_mmap_params *mp __maybe_unused,
 					  struct evlist *evlist __maybe_unused,
 					  struct evsel *evsel __maybe_unused,
-					  int idx __maybe_unused,
-					  bool per_cpu __maybe_unused)
+					  int idx __maybe_unused)
 {
 }