ftrace: Allow access to the boot time function enabling
Change set_ftrace_early_filter() to ftrace_set_early_filter()
and make it a global function. This will allow other subsystems
in the kernel to be able to enable function tracing at start
up and reuse the ftrace function parsing code.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
index d1ff0de..41df6f5 100644
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h
@@ -235,6 +235,9 @@
loff_t ftrace_regex_lseek(struct file *file, loff_t offset, int origin);
int ftrace_regex_release(struct inode *inode, struct file *file);
+void __init
+ftrace_set_early_filter(struct ftrace_ops *ops, char *buf, int enable);
+
/* defined in arch */
extern int ftrace_ip_converted(unsigned long ip);
extern int ftrace_dyn_arch_init(void *data);
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 5728d9a..683d559 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -3279,8 +3279,8 @@
}
#endif /* CONFIG_FUNCTION_GRAPH_TRACER */
-static void __init
-set_ftrace_early_filter(struct ftrace_ops *ops, char *buf, int enable)
+void __init
+ftrace_set_early_filter(struct ftrace_ops *ops, char *buf, int enable)
{
char *func;
@@ -3293,9 +3293,9 @@
static void __init set_ftrace_early_filters(void)
{
if (ftrace_filter_buf[0])
- set_ftrace_early_filter(&global_ops, ftrace_filter_buf, 1);
+ ftrace_set_early_filter(&global_ops, ftrace_filter_buf, 1);
if (ftrace_notrace_buf[0])
- set_ftrace_early_filter(&global_ops, ftrace_notrace_buf, 0);
+ ftrace_set_early_filter(&global_ops, ftrace_notrace_buf, 0);
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
if (ftrace_graph_buf[0])
set_ftrace_early_graph(ftrace_graph_buf);