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| author | Abhishek Sagar <sagar.abhishek@gmail.com> | 2008-06-21 23:47:27 +0530 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-06-23 22:10:56 +0200 |
| commit | 395a59d0f8e86bb39cd700c3d185d30c670bb958 (patch) | |
| tree | 1558e635efcede901c5dbe9acd625d475db5b369 /include/asm-powerpc | |
| parent | f34bfb1beef8a17ba3d46b60f8fa19ffedc1ed8d (diff) | |
| download | linux-stable-395a59d0f8e86bb39cd700c3d185d30c670bb958.tar.gz linux-stable-395a59d0f8e86bb39cd700c3d185d30c670bb958.tar.bz2 linux-stable-395a59d0f8e86bb39cd700c3d185d30c670bb958.zip | |
ftrace: store mcount address in rec->ip
Record the address of the mcount call-site. Currently all archs except sparc64
record the address of the instruction following the mcount call-site. Some
general cleanups are entailed. Storing mcount addresses in rec->ip enables
looking them up in the kprobe hash table later on to check if they're kprobe'd.
Signed-off-by: Abhishek Sagar <sagar.abhishek@gmail.com>
Cc: davem@davemloft.net
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/asm-powerpc')
| -rw-r--r-- | include/asm-powerpc/ftrace.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/asm-powerpc/ftrace.h b/include/asm-powerpc/ftrace.h index b1bfa704b6e5..de921326cca8 100644 --- a/include/asm-powerpc/ftrace.h +++ b/include/asm-powerpc/ftrace.h @@ -1,6 +1,14 @@ #ifndef _ASM_POWERPC_FTRACE #define _ASM_POWERPC_FTRACE +#ifdef CONFIG_FTRACE +#define MCOUNT_ADDR ((long)(_mcount)) +#define MCOUNT_INSN_SIZE 4 /* sizeof mcount call */ + +#ifndef __ASSEMBLY__ extern void _mcount(void); +#endif #endif + +#endif /* _ASM_POWERPC_FTRACE */ |