From: Steven Rostedt <srost...@redhat.com> When CONFIG_DYNAMIC_FTRACE is not set, ftrace_location() is not defined. If a user (like kprobes) references this function, it will break the compile when CONFIG_DYNAMIC_FTRACE is not set.
Add ftrace_location() as a nop (return 0) when DYNAMIC_FTRACE is not defined. Link: http://lkml.kernel.org/r/20120612225426.961092...@goodmis.org Signed-off-by: Steven Rostedt <rost...@goodmis.org> --- include/linux/ftrace.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h index 3e71112..a52f2f4 100644 --- a/include/linux/ftrace.h +++ b/include/linux/ftrace.h @@ -520,7 +520,7 @@ extern int skip_trace(unsigned long ip); extern void ftrace_disable_daemon(void); extern void ftrace_enable_daemon(void); -#else +#else /* CONFIG_DYNAMIC_FTRACE */ static inline int skip_trace(unsigned long ip) { return 0; } static inline int ftrace_force_update(void) { return 0; } static inline void ftrace_disable_daemon(void) { } @@ -538,6 +538,10 @@ static inline int ftrace_text_reserved(void *start, void *end) { return 0; } +static inline unsigned long ftrace_location(unsigned long ip) +{ + return 0; +} /* * Again users of functions that have ftrace_ops may not -- 1.7.10.4
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