ftrace.h

 1/*
 2 * arch/xtensa/include/asm/ftrace.h
 3 *
 4 * This file is subject to the terms and conditions of the GNU General Public
 5 * License.  See the file "COPYING" in the main directory of this archive
 6 * for more details.
 7 *
 8 * Copyright (C) 2013 Tensilica Inc.
 9 */
10#ifndef _XTENSA_FTRACE_H
11#define _XTENSA_FTRACE_H
12
13#include <asm/processor.h>
14
15#ifndef __ASSEMBLER__
16extern unsigned long return_address(unsigned level);
17#define ftrace_return_address(n) return_address(n)
18#endif /* __ASSEMBLER__ */
19
20#ifdef CONFIG_FUNCTION_TRACER
21
22#define MCOUNT_ADDR ((unsigned long)(_mcount))
23#define MCOUNT_INSN_SIZE 3
24
25#ifndef __ASSEMBLER__
26extern void _mcount(void);
27#define mcount _mcount
28#endif /* __ASSEMBLER__ */
29#endif /* CONFIG_FUNCTION_TRACER */
30
31#endif /* _XTENSA_FTRACE_H */