diff options
Diffstat (limited to 'include/asm-x86/ftrace.h')
| -rw-r--r-- | include/asm-x86/ftrace.h | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/include/asm-x86/ftrace.h b/include/asm-x86/ftrace.h index 5c68b32ee1c..1bb6f9bbe1a 100644 --- a/include/asm-x86/ftrace.h +++ b/include/asm-x86/ftrace.h @@ -1,5 +1,5 @@ -#ifndef _ASM_X86_FTRACE -#define _ASM_X86_FTRACE +#ifndef ASM_X86__FTRACE_H +#define ASM_X86__FTRACE_H #ifdef CONFIG_FTRACE #define MCOUNT_ADDR ((long)(mcount)) @@ -7,8 +7,18 @@ #ifndef __ASSEMBLY__ extern void mcount(void); + +static inline unsigned long ftrace_call_adjust(unsigned long addr) +{ + /* + * call mcount is "e8 <4 byte offset>" + * The addr points to the 4 byte offset and the caller of this + * function wants the pointer to e8. Simply subtract one. + */ + return addr - 1; +} #endif #endif /* CONFIG_FTRACE */ -#endif /* _ASM_X86_FTRACE */ +#endif /* ASM_X86__FTRACE_H */ |