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