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/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _ASM_ARM_FTRACE #define _ASM_ARM_FTRACE #ifdef CONFIG_DYNAMIC_FTRACE_WITH_REGS #define ARCH_SUPPORTS_FTRACE_OPS 1 #endif #ifdef CONFIG_FUNCTION_TRACER #define MCOUNT_ADDR ((unsigned long)(__gnu_mcount_nc)) #define MCOUNT_INSN_SIZE 4 /* sizeof mcount call */ #ifndef __ASSEMBLY__ extern void mcount(void); extern void __gnu_mcount_nc(void); #ifdef CONFIG_DYNAMIC_FTRACE struct dyn_arch_ftrace { #ifdef CONFIG_ARM_MODULE_PLTS struct module *mod; #endif }; static inline unsigned long ftrace_call_adjust(unsigned long addr) { /* With Thumb-2, the recorded addresses have the lsb set */ return addr & ~1; } extern void ftrace_caller_old(void); extern void ftrace_call_old(void); #endif #endif #endif #ifndef __ASSEMBLY__ #if defined(CONFIG_FRAME_POINTER) && !defined(CONFIG_ARM_UNWIND) /* * return_address uses walk_stackframe to do it's work. If both * CONFIG_FRAME_POINTER=y and CONFIG_ARM_UNWIND=y walk_stackframe uses unwind * information. For this to work in the function tracer many functions would * have to be marked with __notrace. So for now just depend on * !CONFIG_ARM_UNWIND. */ void *return_address(unsigned int); #else static inline void *return_address(unsigned int level) { return NULL; } #endif #define ftrace_return_address(n) return_address(n) #define ARCH_HAS_SYSCALL_MATCH_SYM_NAME static inline bool arch_syscall_match_sym_name(const char *sym, const char *name) { if (!strcmp(sym, "sys_mmap2")) sym = "sys_mmap_pgoff"; else if (!strcmp(sym, "sys_statfs64_wrapper")) sym = "sys_statfs64"; else if (!strcmp(sym, "sys_fstatfs64_wrapper")) sym = "sys_fstatfs64"; else if (!strcmp(sym, "sys_arm_fadvise64_64")) sym = "sys_fadvise64_64"; /* Ignore case since sym may start with "SyS" instead of "sys" */ return !strcasecmp(sym, name); } #endif /* ifndef __ASSEMBLY__ */ #endif /* _ASM_ARM_FTRACE */ |