linux-kernel - [PATCH 02/12] tracing: Make tracing_selftest_running global to the tracing subsystem

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Message-ID: <20260206195935.127453448@kernel.org>
Date: Fri, 06 Feb 2026 14:37:43 -0500
From: Steven Rostedt <rostedt@...nel.org>
To: linux-kernel@...r.kernel.org,
 linux-trace-kernel@...r.kernel.org
Cc: Masami Hiramatsu <mhiramat@...nel.org>,
 Mark Rutland <mark.rutland@....com>,
 Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
 Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH 02/12] tracing: Make tracing_selftest_running global to the tracing
 subsystem

From: Steven Rostedt <rostedt@...dmis.org>

The file trace.c has become a catchall for most things tracing. Start
making it smaller by breaking out various aspects into their own files.

Make the variable tracing_selftest_running global so that it can be used
by other files in the tracing subsystem and trace.c can be split up.

Signed-off-by: Steven Rostedt (Google) <rostedt@...dmis.org>
---
 kernel/trace/trace.c | 3 +--
 kernel/trace/trace.h | 2 ++
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 45972d089061..dafcdd31570b 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -67,7 +67,7 @@
  * insertions into the ring-buffer such as trace_printk could occurred
  * at the same time, giving false positive or negative results.
  */
-static bool __read_mostly tracing_selftest_running;
+bool __read_mostly tracing_selftest_running;
 
 /*
  * If boot-time tracing including tracers/events via kernel cmdline
@@ -83,7 +83,6 @@ void __init disable_tracing_selftest(const char *reason)
 	}
 }
 #else
-#define tracing_selftest_running	0
 #define tracing_selftest_disabled	0
 #endif
 
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index fda87c9f84bc..ccfaa9b4d2bf 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -867,6 +867,7 @@ extern int trace_selftest_startup_nop(struct tracer *trace,
 					 struct trace_array *tr);
 extern int trace_selftest_startup_branch(struct tracer *trace,
 					 struct trace_array *tr);
+extern bool __read_mostly tracing_selftest_running;
 /*
  * Tracer data references selftest functions that only occur
  * on boot up. These can be __init functions. Thus, when selftests
@@ -879,6 +880,7 @@ static inline void __init disable_tracing_selftest(const char *reason)
 }
 /* Tracers are seldom changed. Optimize when selftests are disabled. */
 #define __tracer_data		__read_mostly
+#define tracing_selftest_running	0
 #endif /* CONFIG_FTRACE_STARTUP_TEST */
 
 extern void *head_page(struct trace_array_cpu *data);
-- 
2.51.0