diff options
| -rw-r--r-- | include/linux/ftrace.h | 2 | ||||
| -rw-r--r-- | kernel/trace/ftrace.c | 16 |
2 files changed, 11 insertions, 7 deletions
diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h index d32cc5e..609948e 100644 --- a/include/linux/ftrace.h +++ b/include/linux/ftrace.h @@ -295,7 +295,7 @@ struct dyn_ftrace *ftrace_rec_iter_record(struct ftrace_rec_iter *iter); int ftrace_update_record(struct dyn_ftrace *rec, int enable); int ftrace_test_record(struct dyn_ftrace *rec, int enable); void ftrace_run_stop_machine(int command); -int ftrace_location(unsigned long ip); +unsigned long ftrace_location(unsigned long ip); extern ftrace_func_t ftrace_trace_function; diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index dd091c8..ef08262 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -1393,7 +1393,7 @@ static int ftrace_cmp_recs(const void *a, const void *b) return 0; } -static int ftrace_location_range(unsigned long start, unsigned long end) +static unsigned long ftrace_location_range(unsigned long start, unsigned long end) { struct ftrace_page *pg; struct dyn_ftrace *rec; @@ -1410,7 +1410,7 @@ static int ftrace_location_range(unsigned long start, unsigned long end) sizeof(struct dyn_ftrace), ftrace_cmp_recs); if (rec) - return 1; + return rec->ip; } return 0; @@ -1420,12 +1420,12 @@ static int ftrace_location_range(unsigned long start, unsigned long end) * ftrace_location - return true if the ip giving is a traced location * @ip: the instruction pointer to check * - * Returns 1 if @ip given is a pointer to a ftrace location. + * Returns rec->ip if @ip given is a pointer to a ftrace location. * That is, the instruction that is either a NOP or call to * the function tracer. It checks the ftrace internal tables to * determine if the address belongs or not. */ -int ftrace_location(unsigned long ip) +unsigned long ftrace_location(unsigned long ip) { return ftrace_location_range(ip, ip); } @@ -1442,8 +1442,12 @@ int ftrace_location(unsigned long ip) */ int ftrace_text_reserved(void *start, void *end) { - return ftrace_location_range((unsigned long)start, - (unsigned long)end); + unsigned long ret; + + ret = ftrace_location_range((unsigned long)start, + (unsigned long)end); + + return (int)!!ret; } static void __ftrace_hash_rec_update(struct ftrace_ops *ops, |