ftrace.h (1864B)
1/* SPDX-License-Identifier: GPL-2.0 */ 2#ifndef _ASM_ARM_FTRACE 3#define _ASM_ARM_FTRACE 4 5#define HAVE_FUNCTION_GRAPH_FP_TEST 6 7#ifdef CONFIG_DYNAMIC_FTRACE_WITH_REGS 8#define ARCH_SUPPORTS_FTRACE_OPS 1 9#endif 10 11#ifdef CONFIG_FUNCTION_TRACER 12#define MCOUNT_ADDR ((unsigned long)(__gnu_mcount_nc)) 13#define MCOUNT_INSN_SIZE 4 /* sizeof mcount call */ 14 15#ifndef __ASSEMBLY__ 16extern void __gnu_mcount_nc(void); 17 18#ifdef CONFIG_DYNAMIC_FTRACE 19struct dyn_arch_ftrace { 20#ifdef CONFIG_ARM_MODULE_PLTS 21 struct module *mod; 22#endif 23}; 24 25static inline unsigned long ftrace_call_adjust(unsigned long addr) 26{ 27 /* With Thumb-2, the recorded addresses have the lsb set */ 28 return addr & ~1; 29} 30#endif 31 32#endif 33 34#endif 35 36#ifndef __ASSEMBLY__ 37 38#if defined(CONFIG_FRAME_POINTER) && !defined(CONFIG_ARM_UNWIND) 39/* 40 * return_address uses walk_stackframe to do it's work. If both 41 * CONFIG_FRAME_POINTER=y and CONFIG_ARM_UNWIND=y walk_stackframe uses unwind 42 * information. For this to work in the function tracer many functions would 43 * have to be marked with __notrace. So for now just depend on 44 * !CONFIG_ARM_UNWIND. 45 */ 46 47void *return_address(unsigned int); 48 49#else 50 51static inline void *return_address(unsigned int level) 52{ 53 return NULL; 54} 55 56#endif 57 58#define ftrace_return_address(n) return_address(n) 59 60#define ARCH_HAS_SYSCALL_MATCH_SYM_NAME 61 62static inline bool arch_syscall_match_sym_name(const char *sym, 63 const char *name) 64{ 65 if (!strcmp(sym, "sys_mmap2")) 66 sym = "sys_mmap_pgoff"; 67 else if (!strcmp(sym, "sys_statfs64_wrapper")) 68 sym = "sys_statfs64"; 69 else if (!strcmp(sym, "sys_fstatfs64_wrapper")) 70 sym = "sys_fstatfs64"; 71 else if (!strcmp(sym, "sys_arm_fadvise64_64")) 72 sym = "sys_fadvise64_64"; 73 74 /* Ignore case since sym may start with "SyS" instead of "sys" */ 75 return !strcasecmp(sym, name); 76} 77 78#endif /* ifndef __ASSEMBLY__ */ 79 80#endif /* _ASM_ARM_FTRACE */