diff --git a/tools/perf/lib/include/perf/event.h b/tools/perf/lib/include/perf/event.h
new file mode 100644
index 000000000000..13fe15a2fe7f
--- /dev/null
+++ b/tools/perf/lib/include/perf/event.h
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __LIBPERF_EVENT_H
+#define __LIBPERF_EVENT_H
+
+#include <linux/perf_event.h>
+#include <linux/types.h>
+#include <linux/limits.h>
+
+struct mmap_event {
+	struct perf_event_header header;
+	__u32			 pid, tid;
+	__u64			 start;
+	__u64			 len;
+	__u64			 pgoff;
+	char			 filename[PATH_MAX];
+};
+
+#endif /* __LIBPERF_EVENT_H */
diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index 332edef8d394..43c86257e7fa 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -1353,7 +1353,7 @@ int perf_event__process_bpf_event(struct perf_tool *tool __maybe_unused,
 
 size_t perf_event__fprintf_mmap(union perf_event *event, FILE *fp)
 {
-	return fprintf(fp, " %d/%d: [%#" PRIx64 "(%#" PRIx64 ") @ %#" PRIx64 "]: %c %s\n",
+	return fprintf(fp, " %d/%d: [%#" PRI_lx64 "(%#" PRI_lx64 ") @ %#" PRI_lx64 "]: %c %s\n",
 		       event->mmap.pid, event->mmap.tid, event->mmap.start,
 		       event->mmap.len, event->mmap.pgoff,
 		       (event->header.misc & PERF_RECORD_MISC_MMAP_DATA) ? 'r' : 'x',
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index 0e164e8ae28d..f43eff2fba2d 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -7,19 +7,25 @@
 #include <linux/kernel.h>
 #include <linux/bpf.h>
 #include <linux/perf_event.h>
+#include <perf/event.h>
 
 #include "../perf.h"
 #include "build-id.h"
 #include "perf_regs.h"
 
-struct mmap_event {
-	struct perf_event_header header;
-	u32 pid, tid;
-	u64 start;
-	u64 len;
-	u64 pgoff;
-	char filename[PATH_MAX];
-};
+#ifdef __LP64__
+/*
+ * /usr/include/inttypes.h uses just 'lu' for PRIu64, but we end up defining
+ * __u64 as long long unsigned int, and then -Werror=format= kicks in and
+ * complains of the mismatched types, so use these two special extra PRI
+ * macros to overcome that.
+ */
+#define PRI_lu64 "l" PRIu64
+#define PRI_lx64 "l" PRIx64
+#else
+#define PRI_lu64 PRIu64
+#define PRI_lx64 PRIx64
+#endif
 
 struct mmap2_event {
 	struct perf_event_header header;
diff --git a/tools/perf/util/python.c b/tools/perf/util/python.c
index 75ecc32a4427..55ff0c3182d6 100644
--- a/tools/perf/util/python.c
+++ b/tools/perf/util/python.c
@@ -130,8 +130,8 @@ static PyObject *pyrf_mmap_event__repr(struct pyrf_event *pevent)
 	PyObject *ret;
 	char *s;
 
-	if (asprintf(&s, "{ type: mmap, pid: %u, tid: %u, start: %#" PRIx64 ", "
-			 "length: %#" PRIx64 ", offset: %#" PRIx64 ", "
+	if (asprintf(&s, "{ type: mmap, pid: %u, tid: %u, start: %#" PRI_lx64 ", "
+			 "length: %#" PRI_lx64 ", offset: %#" PRI_lx64 ", "
 			 "filename: %s }",
 		     pevent->event.mmap.pid, pevent->event.mmap.tid,
 		     pevent->event.mmap.start, pevent->event.mmap.len,