linux-kernel - [PATCH 2/3] tracing: Remove checking the activity when module map is updating

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Message-ID: <173886113592.496116.11615563462036645436.stgit@devnote2>
Date: Fri,  7 Feb 2025 01:58:56 +0900
From: "Masami Hiramatsu (Google)" <mhiramat@...nel.org>
To: Steven Rostedt <rostedt@...dmis.org>
Cc: Masami Hiramatsu <mhiramat@...nel.org>,
	linux-kernel@...r.kernel.org,
	linux-trace-kernel@...r.kernel.org,
	Mark Rutland <mark.rutland@....com>,
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH 2/3] tracing: Remove checking the activity when module map is updating

From: Masami Hiramatsu (Google) <mhiramat@...nel.org>

Remove unnecessary active check because tr->flags already checks it.

Signed-off-by: Masami Hiramatsu (Google) <mhiramat@...nel.org>
---
 kernel/trace/trace.c |   13 +------------
 1 file changed, 1 insertion(+), 12 deletions(-)

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 0f010a34de84..5a064e712fd7 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -10090,15 +10090,6 @@ static void trace_module_remove_evals(struct module *mod)
 static inline void trace_module_remove_evals(struct module *mod) { }
 #endif /* CONFIG_TRACE_EVAL_MAP_FILE */
 
-static bool trace_array_active(struct trace_array *tr)
-{
-	if (tr->current_trace != &nop_trace)
-		return true;
-
-	/* 0 is no events, 1 is all disabled */
-	return trace_events_enabled(tr, NULL) > 1;
-}
-
 static void trace_module_record(struct module *mod)
 {
 	struct trace_array *tr;
@@ -10107,9 +10098,7 @@ static void trace_module_record(struct module *mod)
 		/* Update any persistent trace array that has already been started */
 		if ((tr->flags & (TRACE_ARRAY_FL_BOOT | TRACE_ARRAY_FL_LAST_BOOT)) ==
 		    TRACE_ARRAY_FL_BOOT) {
-			/* Only update if the trace array is active */
-			if (trace_array_active(tr))
-				save_mod(mod, tr);
+			save_mod(mod, tr);
 		}
 	}
 }