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Subject[PATCH 5/5] tracing: toplevel d_entry already initialized
Date
Currently we have following call flow:

tracer_init_tracefs()
tracing_init_dentry()
event_trace_init()
tracing_init_dentry()

This shows tracing_init_dentry() is called twice in this flow and this
is not necessary.

Let's remove the second one when it is for sure be properly initialized.

Signed-off-by: Wei Yang <richard.weiyang@linux.alibaba.com>
---
kernel/trace/trace_events.c | 5 -----
1 file changed, 5 deletions(-)

diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index 8b3aa57dcea6..76879b29cf33 100644
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -3434,7 +3434,6 @@ early_initcall(event_trace_enable_again);
__init int event_trace_init(void)
{
struct trace_array *tr;
- struct dentry *d_tracer;
struct dentry *entry;
int ret;

@@ -3442,10 +3441,6 @@ __init int event_trace_init(void)
if (!tr)
return -ENODEV;

- d_tracer = tracing_init_dentry();
- if (IS_ERR(d_tracer))
- return 0;
-
entry = tracefs_create_file("available_events", 0444, NULL,
tr, &ftrace_avail_fops);
if (!entry)
--
2.20.1 (Apple Git-117)
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