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__ 16 extern 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__ 26 extern void _mcount(void); 27 #define mcount _mcount 28 #endif /* __ASSEMBLER__ */ 29 #endif /* CONFIG_FUNCTION_TRACER */ 30 31 #endif /* _XTENSA_FTRACE_H */ 32