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review.evervolv.com / android_kernel_oneplus_msm8996 / a26a2a27396c0a0877aa701f8f92d08ba550a6c9 / . / arch / x86 / include / asm / ftrace.h
blob: a23468194b8c346f2fa463d6ec57d9f05938d20f [file] [log] [blame]
H. Peter Anvin1965aae2008-10-22 22:26:29 -0700[diff] [blame]1#ifndef _ASM_X86_FTRACE_H
2#define _ASM_X86_FTRACE_H
Abhishek Sagar395a59d2008-06-21 23:47:27 +0530[diff] [blame]3
Ingo Molnar4944dd62008-10-27 10:50:54 +0100[diff] [blame]4#ifdef CONFIG_FUNCTION_TRACER
Abhishek Sagar395a59d2008-06-21 23:47:27 +0530[diff] [blame]5#define MCOUNT_ADDR ((long)(mcount))
6#define MCOUNT_INSN_SIZE 5 /* sizeof mcount call */
7
8#ifndef __ASSEMBLY__
9extern void mcount(void);
Steven Rostedt68bf21a2008-08-14 15:45:08 -0400[diff] [blame]10
11static inline unsigned long ftrace_call_adjust(unsigned long addr)
12{
13 /*
14 * call mcount is "e8 <4 byte offset>"
15 * The addr points to the 4 byte offset and the caller of this
16 * function wants the pointer to e8. Simply subtract one.
17 */
18 return addr - 1;
19}
Steven Rostedt17666f02008-10-30 16:08:32 -0400[diff] [blame]20
21#ifdef CONFIG_DYNAMIC_FTRACE
22extern void ftrace_nmi_enter(void);
23extern void ftrace_nmi_exit(void);
24#else
Steven Rostedta26a2a22008-10-31 00:03:22 -0400[diff] [blame^]25static inline void ftrace_nmi_enter(void) { }
26static inline void ftrace_nmi_exit(void) { }
Steven Rostedt17666f02008-10-30 16:08:32 -0400[diff] [blame]27#endif
Steven Rostedta26a2a22008-10-31 00:03:22 -0400[diff] [blame^]28#endif /* __ASSEMBLY__ */
Steven Rostedt17666f02008-10-30 16:08:32 -0400[diff] [blame]29
30#else /* CONFIG_FUNCTION_TRACER */
31
32#ifndef __ASSEMBLY__
Steven Rostedta26a2a22008-10-31 00:03:22 -0400[diff] [blame^]33static inline void ftrace_nmi_enter(void) { }
34static inline void ftrace_nmi_exit(void) { }
Abhishek Sagar395a59d2008-06-21 23:47:27 +0530[diff] [blame]35#endif
36
Ingo Molnar4944dd62008-10-27 10:50:54 +0100[diff] [blame]37#endif /* CONFIG_FUNCTION_TRACER */
Abhishek Sagar395a59d2008-06-21 23:47:27 +0530[diff] [blame]38
H. Peter Anvin1965aae2008-10-22 22:26:29 -0700[diff] [blame]39#endif /* _ASM_X86_FTRACE_H */