linux-kernel - [PATCH v2 10/12] tracing: Remove orphaned trace_add/remove_event

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Date:   Mon,  5 Nov 2018 18:04:29 +0900
From:   Masami Hiramatsu <mhiramat@...nel.org>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...nel.org>,
        Tom Zanussi <tom.zanussi@...ux.intel.com>,
        Ravi Bangoria <ravi.bangoria@...ux.vnet.ibm.com>
Subject: [PATCH v2 10/12] tracing: Remove orphaned trace_add/remove_event_call functions

Remove trace_add_event_call() and trace_remove_event_call()
functions since those are not used anymore.

Signed-off-by: Masami Hiramatsu <mhiramat@...nel.org>
---
 include/linux/trace_events.h |    2 --
 kernel/trace/trace_events.c  |   26 ++------------------------
 2 files changed, 2 insertions(+), 26 deletions(-)

diff --git a/include/linux/trace_events.h b/include/linux/trace_events.h
index 3aa05593a53f..7a3147ead6bf 100644
--- a/include/linux/trace_events.h
+++ b/include/linux/trace_events.h
@@ -531,8 +531,6 @@ extern int trace_define_field(struct trace_event_call *call, const char *type,
 			      int is_signed, int filter_type);
 extern int trace_add_event_call_nolock(struct trace_event_call *call);
 extern int trace_remove_event_call_nolock(struct trace_event_call *call);
-extern int trace_add_event_call(struct trace_event_call *call);
-extern int trace_remove_event_call(struct trace_event_call *call);
 extern int trace_event_get_offsets(struct trace_event_call *call);
 
 #define is_signed_type(type)	(((type)(-1)) < (type)1)
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index a3b157f689ee..16cff7c0fd40 100644
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -2305,6 +2305,7 @@ __trace_early_add_new_event(struct trace_event_call *call,
 struct ftrace_module_file_ops;
 static void __add_event_to_tracers(struct trace_event_call *call);
 
+/* Add an additional event_call dynamically */
 int trace_add_event_call_nolock(struct trace_event_call *call)
 {
 	int ret;
@@ -2320,17 +2321,6 @@ int trace_add_event_call_nolock(struct trace_event_call *call)
 	return ret;
 }
 
-/* Add an additional event_call dynamically */
-int trace_add_event_call(struct trace_event_call *call)
-{
-	int ret;
-
-	mutex_lock(&event_mutex);
-	ret = trace_add_event_call_nolock(call);
-	mutex_unlock(&event_mutex);
-	return ret;
-}
-
 /*
  * Must be called under locking of trace_types_lock, event_mutex and
  * trace_event_sem.
@@ -2376,7 +2366,7 @@ static int probe_remove_event_call(struct trace_event_call *call)
 	return 0;
 }
 
-/* no event_mutex version */
+/* Remove an event_call */
 int trace_remove_event_call_nolock(struct trace_event_call *call)
 {
 	int ret;
@@ -2392,18 +2382,6 @@ int trace_remove_event_call_nolock(struct trace_event_call *call)
 	return ret;
 }
 
-/* Remove an event_call */
-int trace_remove_event_call(struct trace_event_call *call)
-{
-	int ret;
-
-	mutex_lock(&event_mutex);
-	ret = trace_remove_event_call_nolock(call);
-	mutex_unlock(&event_mutex);
-
-	return ret;
-}
-
 #define for_each_event(event, start, end)			\
 	for (event = start;					\
 	     (unsigned long)event < (unsigned long)end;		\