H. Peter Anvin | 1965aae | 2008-10-22 22:26:29 -0700 | [diff] [blame] | 1 | #ifndef _ASM_X86_FTRACE_H |
| 2 | #define _ASM_X86_FTRACE_H |
Abhishek Sagar | 395a59d | 2008-06-21 23:47:27 +0530 | [diff] [blame] | 3 | |
Ingo Molnar | 4944dd6 | 2008-10-27 10:50:54 +0100 | [diff] [blame] | 4 | #ifdef CONFIG_FUNCTION_TRACER |
Steven Rostedt | d57c5d5 | 2011-02-09 13:32:18 -0500 | [diff] [blame] | 5 | #ifdef CC_USING_FENTRY |
| 6 | # define MCOUNT_ADDR ((long)(__fentry__)) |
| 7 | #else |
| 8 | # define MCOUNT_ADDR ((long)(mcount)) |
| 9 | #endif |
Abhishek Sagar | 395a59d | 2008-06-21 23:47:27 +0530 | [diff] [blame] | 10 | #define MCOUNT_INSN_SIZE 5 /* sizeof mcount call */ |
| 11 | |
Steven Rostedt | 28fb5df | 2011-08-10 22:00:55 -0400 | [diff] [blame] | 12 | #ifdef CONFIG_DYNAMIC_FTRACE |
Steven Rostedt | 2f5f6ad | 2011-08-08 16:57:47 -0400 | [diff] [blame] | 13 | #define ARCH_SUPPORTS_FTRACE_OPS 1 |
Steven Rostedt | 08f6fba | 2012-04-30 16:20:23 -0400 | [diff] [blame] | 14 | #endif |
Steven Rostedt | 2f5f6ad | 2011-08-08 16:57:47 -0400 | [diff] [blame] | 15 | |
Abhishek Sagar | 395a59d | 2008-06-21 23:47:27 +0530 | [diff] [blame] | 16 | #ifndef __ASSEMBLY__ |
| 17 | extern void mcount(void); |
Steven Rostedt | a192cd0 | 2012-05-30 13:26:37 -0400 | [diff] [blame] | 18 | extern atomic_t modifying_ftrace_code; |
Steven Rostedt | d57c5d5 | 2011-02-09 13:32:18 -0500 | [diff] [blame] | 19 | extern void __fentry__(void); |
Steven Rostedt | 68bf21a | 2008-08-14 15:45:08 -0400 | [diff] [blame] | 20 | |
| 21 | static inline unsigned long ftrace_call_adjust(unsigned long addr) |
| 22 | { |
| 23 | /* |
Martin Schwidefsky | 521ccb5 | 2011-05-10 10:10:41 +0200 | [diff] [blame] | 24 | * addr is the address of the mcount call instruction. |
| 25 | * recordmcount does the necessary offset calculation. |
Steven Rostedt | 68bf21a | 2008-08-14 15:45:08 -0400 | [diff] [blame] | 26 | */ |
Martin Schwidefsky | 521ccb5 | 2011-05-10 10:10:41 +0200 | [diff] [blame] | 27 | return addr; |
Steven Rostedt | 68bf21a | 2008-08-14 15:45:08 -0400 | [diff] [blame] | 28 | } |
Steven Rostedt | 31e8890 | 2008-11-14 16:21:19 -0800 | [diff] [blame] | 29 | |
| 30 | #ifdef CONFIG_DYNAMIC_FTRACE |
| 31 | |
| 32 | struct dyn_arch_ftrace { |
| 33 | /* No extra data needed for x86 */ |
| 34 | }; |
| 35 | |
Steven Rostedt | 08d636b | 2011-08-16 09:57:10 -0400 | [diff] [blame] | 36 | int ftrace_int3_handler(struct pt_regs *regs); |
| 37 | |
Steven Rostedt (Red Hat) | 1026ff9 | 2014-07-11 23:23:53 -0400 | [diff] [blame] | 38 | #define FTRACE_GRAPH_TRAMP_ADDR FTRACE_GRAPH_ADDR |
| 39 | |
Steven Rostedt | 31e8890 | 2008-11-14 16:21:19 -0800 | [diff] [blame] | 40 | #endif /* CONFIG_DYNAMIC_FTRACE */ |
Steven Rostedt | a26a2a2 | 2008-10-31 00:03:22 -0400 | [diff] [blame] | 41 | #endif /* __ASSEMBLY__ */ |
Ingo Molnar | 4944dd6 | 2008-10-27 10:50:54 +0100 | [diff] [blame] | 42 | #endif /* CONFIG_FUNCTION_TRACER */ |
Abhishek Sagar | 395a59d | 2008-06-21 23:47:27 +0530 | [diff] [blame] | 43 | |
Steven Rostedt | f431b63 | 2013-02-12 16:18:59 -0500 | [diff] [blame] | 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 |
| 59 | static 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 | |
H. Peter Anvin | 1965aae | 2008-10-22 22:26:29 -0700 | [diff] [blame] | 68 | #endif /* _ASM_X86_FTRACE_H */ |