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// SPDX-License-Identifier: GPL-2.0
// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
#include <linux/ftrace.h>
#include <linux/uaccess.h>
extern void (*ftrace_trace_function)(unsigned long, unsigned long,
struct ftrace_ops*, struct pt_regs*);
noinline void __naked ftrace_stub(unsigned long ip, unsigned long parent_ip,
struct ftrace_ops *op, struct pt_regs *regs)
{
asm volatile ("\n");
}
noinline void csky_mcount(unsigned long from_pc, unsigned long self_pc)
{
if (ftrace_trace_function != ftrace_stub)
ftrace_trace_function(self_pc, from_pc, NULL, NULL);
}
/* _mcount is defined in abi's mcount.S */
EXPORT_SYMBOL(_mcount);
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