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| author |   Heiko Carstens <heiko.carstens@de.ibm.com> | 2009-06-12 10:26:44 +0200 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2009-06-12 10:27:38 +0200 |
| commit | dfd9f7abc0fb67b5781f340d982384cea53b2884 (patch) | |
| tree | 850baae88167699f45ba1dea1765b9156373db72 /arch/s390/include/asm/ftrace.h | |
| parent | [S390] kprobes: use probe_kernel_write (diff) | |
| download | linux-dev-dfd9f7abc0fb67b5781f340d982384cea53b2884.tar.xz linux-dev-dfd9f7abc0fb67b5781f340d982384cea53b2884.zip | |
[S390] ftrace: add dynamic ftrace support
Dynamic ftrace support for s390.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/ftrace.h')
| -rw-r--r-- | arch/s390/include/asm/ftrace.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/s390/include/asm/ftrace.h b/arch/s390/include/asm/ftrace.h index 5a5bc75e19d4..ba23d8f97d07 100644 --- a/arch/s390/include/asm/ftrace.h +++ b/arch/s390/include/asm/ftrace.h @@ -2,7 +2,26 @@ #define _ASM_S390_FTRACE_H #ifndef __ASSEMBLY__ + extern void _mcount(void); +extern unsigned long ftrace_dyn_func; + +struct dyn_arch_ftrace { }; + +#define MCOUNT_ADDR ((long)_mcount) + +#ifdef CONFIG_64BIT +#define MCOUNT_INSN_SIZE 24 +#define MCOUNT_OFFSET 14 +#else +#define MCOUNT_INSN_SIZE 30 +#define MCOUNT_OFFSET 8 #endif +static inline unsigned long ftrace_call_adjust(unsigned long addr) +{ + return addr - MCOUNT_OFFSET; +} + +#endif /* __ASSEMBLY__ */ #endif /* _ASM_S390_FTRACE_H */ |