1 #ifndef _ASM_X86_FTRACE_H 2 #define _ASM_X86_FTRACE_H 3 4 #ifdef CONFIG_FUNCTION_TRACER 5 #ifdef CC_USING_FENTRY 6 # define MCOUNT_ADDR ((unsigned long)(__fentry__)) 7 #else 8 # define MCOUNT_ADDR ((unsigned long)(mcount)) 9 # define HAVE_FUNCTION_GRAPH_FP_TEST 10 #endif 11 #define MCOUNT_INSN_SIZE 5 /* sizeof mcount call */ 12 13 #ifdef CONFIG_DYNAMIC_FTRACE 14 #define ARCH_SUPPORTS_FTRACE_OPS 1 15 #endif 16 17 #define HAVE_FUNCTION_GRAPH_RET_ADDR_PTR 18 19 #ifndef __ASSEMBLY__ 20 extern void mcount(void); 21 extern atomic_t modifying_ftrace_code; 22 extern void __fentry__(void); 23 24 static inline unsigned long ftrace_call_adjust(unsigned long addr) 25 { 26 /* 27 * addr is the address of the mcount call instruction. 28 * recordmcount does the necessary offset calculation. 29 */ 30 return addr; 31 } 32 33 #ifdef CONFIG_DYNAMIC_FTRACE 34 35 struct dyn_arch_ftrace { 36 /* No extra data needed for x86 */ 37 }; 38 39 int ftrace_int3_handler(struct pt_regs *regs); 40 41 #define FTRACE_GRAPH_TRAMP_ADDR FTRACE_GRAPH_ADDR 42 43 #endif /* CONFIG_DYNAMIC_FTRACE */ 44 #endif /* __ASSEMBLY__ */ 45 #endif /* CONFIG_FUNCTION_TRACER */ 46 47 48 #if !defined(__ASSEMBLY__) && !defined(COMPILE_OFFSETS) 49 50 #if defined(CONFIG_FTRACE_SYSCALLS) && defined(CONFIG_IA32_EMULATION) 51 #include <asm/compat.h> 52 53 /* 54 * Because ia32 syscalls do not map to x86_64 syscall numbers 55 * this screws up the trace output when tracing a ia32 task. 56 * Instead of reporting bogus syscalls, just do not trace them. 57 * 58 * If the user really wants these, then they should use the 59 * raw syscall tracepoints with filtering. 60 */ 61 #define ARCH_TRACE_IGNORE_COMPAT_SYSCALLS 1 62 static inline bool arch_trace_is_compat_syscall(struct pt_regs *regs) 63 { 64 if (in_compat_syscall()) 65 return true; 66 return false; 67 } 68 #endif /* CONFIG_FTRACE_SYSCALLS && CONFIG_IA32_EMULATION */ 69 #endif /* !__ASSEMBLY__ && !COMPILE_OFFSETS */ 70 71 #endif /* _ASM_X86_FTRACE_H */ 72