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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__
20extern void mcount(void);
21extern atomic_t modifying_ftrace_code;
22extern void __fentry__(void);
23
24static 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
35struct dyn_arch_ftrace {
36 /* No extra data needed for x86 */
37};
38
39int 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
62static 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 */