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Commit 2a85a37f authored by Steven Rostedt's avatar Steven Rostedt Committed by Steven Rostedt
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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: default avatarSteven Rostedt <rostedt@goodmis.org>
parent d2d45c7a

include/linux/ftrace.h

+3 −0
Original line number Diff line number Diff line
@@ -235,6 +235,9 @@ ssize_t ftrace_notrace_write(struct file *file, const char __user *ubuf, 
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);

kernel/trace/ftrace.c

+4 −4
Original line number Diff line number Diff line
@@ -3279,8 +3279,8 @@ static void __init set_ftrace_early_graph(char *buf) 
}

#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 @@ set_ftrace_early_filter(struct ftrace_ops *ops, char *buf, int enable) 
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);