summaryrefslogtreecommitdiffstats
path: root/include/asm-powerpc
diff options
context:
space:
mode:
authorAbhishek Sagar <sagar.abhishek@gmail.com>2008-06-21 23:47:27 +0530
committerIngo Molnar <mingo@elte.hu>2008-06-23 22:10:56 +0200
commit395a59d0f8e86bb39cd700c3d185d30c670bb958 (patch)
tree1558e635efcede901c5dbe9acd625d475db5b369 /include/asm-powerpc
parentf34bfb1beef8a17ba3d46b60f8fa19ffedc1ed8d (diff)
downloadop-kernel-dev-395a59d0f8e86bb39cd700c3d185d30c670bb958.zip
op-kernel-dev-395a59d0f8e86bb39cd700c3d185d30c670bb958.tar.gz
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.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/asm-powerpc/ftrace.h b/include/asm-powerpc/ftrace.h
index b1bfa70..de92132 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 */
OpenPOWER on IntegriCloud