From bb3b2cfeb206f5b10b859e134651b54120e3f530 Mon Sep 17 00:00:00 2001
From: Linus Walleij <linusw@kernel.org>
Date: Tue, 30 Jun 2026 18:05:56 +0100
Subject: ARM: 9480/1: entry: expand comment in __switch_to

As per discussion between the developers in the mail thread
linked, expand the comment in __switch_to so that readers
of the code understand what is going on.

Suggested-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
---
 tools/perf/util/topdown.c | 8 ++++++++
 1 file changed, 8 insertions(+)
 create mode 100644 tools/perf/util/topdown.c

(limited to 'tools/perf/util/topdown.c')

diff --git a/tools/perf/util/topdown.c b/tools/perf/util/topdown.c
new file mode 100644
index 000000000..18fd5fed5
--- /dev/null
+++ b/tools/perf/util/topdown.c
@@ -0,0 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0
+#include "topdown.h"
+#include <linux/kernel.h>
+
+__weak bool arch_topdown_sample_read(struct evsel *leader __maybe_unused)
+{
+	return false;
+}
-- 
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