[PATCH] ftrace: fix the file mode of graph tracer and stack tracer

[Zhengyuan Liu]

It's something looks weird that those files could be written by root
but shows with no write permission by ll command.
Chen LinX <linx.z.chen@xxxxxxxxx> has sent a similar patch to fix
graph function file mode in 2000,  I didn't get the reason why that
patch wasn't applied so I resend it.

Signed-off-by: Zhengyuan Liu <liuzhengyuan@xxxxxxxxxx>
---
 kernel/trace/ftrace.c      | 4 ++--
 kernel/trace/trace_stack.c | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index ccdf366..fe903dc8 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -5513,10 +5513,10 @@ static __init int ftrace_init_dyn_tracefs(struct dentry *d_tracer)
 	ftrace_create_filter_files(&global_ops, d_tracer);
 
 #ifdef CONFIG_FUNCTION_GRAPH_TRACER
-	trace_create_file("set_graph_function", 0444, d_tracer,
+	trace_create_file("set_graph_function", 0644, d_tracer,
 				    NULL,
 				    &ftrace_graph_fops);
-	trace_create_file("set_graph_notrace", 0444, d_tracer,
+	trace_create_file("set_graph_notrace", 0644, d_tracer,
 				    NULL,
 				    &ftrace_graph_notrace_fops);
 #endif /* CONFIG_FUNCTION_GRAPH_TRACER */
diff --git a/kernel/trace/trace_stack.c b/kernel/trace/trace_stack.c
index 734accc..4356f14 100644
--- a/kernel/trace/trace_stack.c
+++ b/kernel/trace/trace_stack.c
@@ -468,7 +468,7 @@ static __init int stack_trace_init(void)
 			NULL, &stack_trace_fops);
 
 #ifdef CONFIG_DYNAMIC_FTRACE
-	trace_create_file("stack_trace_filter", 0444, d_tracer,
+	trace_create_file("stack_trace_filter", 0644, d_tracer,
 			  &trace_ops, &stack_trace_filter_fops);
 #endif
 
-- 
2.7.4