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/*
* arch/arm64/include/asm/ftrace.h
*
* Copyright (C) 2013 Linaro Limited
* Author: AKASHI Takahiro <takahiro.akashi@linaro.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef __ASM_FTRACE_H
#define __ASM_FTRACE_H
#include <asm/insn.h>
#define MCOUNT_ADDR ((unsigned long)_mcount)
#define MCOUNT_INSN_SIZE AARCH64_INSN_SIZE
#ifndef __ASSEMBLY__
extern void _mcount(unsigned long);
extern void *return_address(unsigned int);
struct dyn_arch_ftrace {
/* No extra data needed for arm64 */
};
extern unsigned long ftrace_graph_call;
static inline unsigned long ftrace_call_adjust(unsigned long addr)
{
/*
* addr is the address of the mcount call instruction.
* recordmcount does the necessary offset calculation.
*/
return addr;
}
#define ftrace_return_address(n) return_address(n)
#endif /* ifndef __ASSEMBLY__ */
#endif /* __ASM_FTRACE_H */
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