From 76cb841cb886eef6b3bee341a2266c76578724ad Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Mon, 6 May 2024 03:02:30 +0200
Subject: Adding upstream version 4.19.249.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 arch/xtensa/oprofile/backtrace.c | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 arch/xtensa/oprofile/backtrace.c

(limited to 'arch/xtensa/oprofile/backtrace.c')

diff --git a/arch/xtensa/oprofile/backtrace.c b/arch/xtensa/oprofile/backtrace.c
new file mode 100644
index 000000000..8f952034e
--- /dev/null
+++ b/arch/xtensa/oprofile/backtrace.c
@@ -0,0 +1,27 @@
+/**
+ * @file backtrace.c
+ *
+ * @remark Copyright 2008 Tensilica Inc.
+ * Copyright (C) 2015 Cadence Design Systems Inc.
+ * @remark Read the file COPYING
+ *
+ */
+
+#include <linux/oprofile.h>
+#include <asm/ptrace.h>
+#include <asm/stacktrace.h>
+
+static int xtensa_backtrace_cb(struct stackframe *frame, void *data)
+{
+	oprofile_add_trace(frame->pc);
+	return 0;
+}
+
+void xtensa_backtrace(struct pt_regs * const regs, unsigned int depth)
+{
+	if (user_mode(regs))
+		xtensa_backtrace_user(regs, depth, xtensa_backtrace_cb, NULL);
+	else
+		xtensa_backtrace_kernel(regs, depth, xtensa_backtrace_cb,
+					xtensa_backtrace_cb, NULL);
+}
-- 
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