tracing: Move tracing_set_filter_buffering() into trace_events_hist.c

The function tracing_set_filter_buffering() is only used in
trace_events_hist.c. Move it to that file and make it static.

Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: https://patch.msgid.link/20260206195936.617080218@kernel.org
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 8c0f3cfd196b5db4acdf1c36324a85d41b6cdcad..702ef851db453553744848c7af49dac0db177f48 100644 (file)
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -7891,26 +7891,6 @@ u64 tracing_event_time_stamp(struct trace_buffer *buffer, struct ring_buffer_eve
        return ring_buffer_event_time_stamp(buffer, rbe);
 }
 
-/*
- * Set or disable using the per CPU trace_buffer_event when possible.
- */
-int tracing_set_filter_buffering(struct trace_array *tr, bool set)
-{
-       guard(mutex)(&trace_types_lock);
-
-       if (set && tr->no_filter_buffering_ref++)
-               return 0;
-
-       if (!set) {
-               if (WARN_ON_ONCE(!tr->no_filter_buffering_ref))
-                       return -EINVAL;
-
-               --tr->no_filter_buffering_ref;
-       }
-
-       return 0;
-}
-
 struct ftrace_buffer_info {
        struct trace_iterator   iter;
        void                    *spare;

diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index bb68539c64b7b99ebf587f23e72d610a1c23b61b..31fb137e1c66b4d61ccaa169162305ba9a370c76 100644 (file)
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -476,7 +476,6 @@ extern struct trace_array *trace_array_find(const char *instance);
 extern struct trace_array *trace_array_find_get(const char *instance);
 
 extern u64 tracing_event_time_stamp(struct trace_buffer *buffer, struct ring_buffer_event *rbe);
-extern int tracing_set_filter_buffering(struct trace_array *tr, bool set);
 extern int tracing_set_clock(struct trace_array *tr, const char *clockstr);
 
 extern bool trace_clock_in_ns(struct trace_array *tr);

diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c
index 0fc641461be54c01018975a87477e5bff584415f..e6f449f53afcc79ad6d029855cd5109c6284203e 100644 (file)
--- a/kernel/trace/trace_events_hist.c
+++ b/kernel/trace/trace_events_hist.c
@@ -6531,6 +6531,26 @@ static bool existing_hist_update_only(char *glob,
        return updated;
 }
 
+/*
+ * Set or disable using the per CPU trace_buffer_event when possible.
+ */
+static int tracing_set_filter_buffering(struct trace_array *tr, bool set)
+{
+       guard(mutex)(&trace_types_lock);
+
+       if (set && tr->no_filter_buffering_ref++)
+               return 0;
+
+       if (!set) {
+               if (WARN_ON_ONCE(!tr->no_filter_buffering_ref))
+                       return -EINVAL;
+
+               --tr->no_filter_buffering_ref;
+       }
+
+       return 0;
+}
+
 static int hist_register_trigger(char *glob,
                                 struct event_trigger_data *data,
                                 struct trace_event_file *file)