From: Steven Rostedt <rostedt@goodmis.org>

When the SNAPSHOT is defined but FSNOTIFY is not the latency_fsnotify()
function is turned into a static inline stub. But this stub was defined in
both trace.h and trace_snapshot.c causing a error in build when
CONFIG_SNAPSHOT is defined but FSNOTIFY is not. The stub is not needed in
trace_snapshot.c as it will be defined in trace.h, remove it from the C
file.

Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Link: https://patch.msgid.link/20260330205859.24c0aae3@gandalf.local.home
Fixes: bade44fe5462 ("tracing: Move snapshot code out of trace.c and into trace_snapshot.c")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202603310604.lGE9LDBK-lkp@intel.com/
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
---
 kernel/trace/trace.h          | 2 +-
 kernel/trace/trace_snapshot.c | 3 +--
 2 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index 0904fd356634..90d67f4432f5 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -845,13 +845,13 @@ void update_max_tr_single(struct trace_array *tr,
 #if defined(CONFIG_TRACER_MAX_TRACE) && defined(CONFIG_FSNOTIFY)
 # define LATENCY_FS_NOTIFY
 #endif
+#endif /* CONFIG_TRACER_SNAPSHOT */
 
 #ifdef LATENCY_FS_NOTIFY
 void latency_fsnotify(struct trace_array *tr);
 #else
 static inline void latency_fsnotify(struct trace_array *tr) { }
 #endif
-#endif /* CONFIG_TRACER_SNAPSHOT */
 
 #ifdef CONFIG_STACKTRACE
 void __trace_stack(struct trace_array *tr, unsigned int trace_ctx, int skip);
diff --git a/kernel/trace/trace_snapshot.c b/kernel/trace/trace_snapshot.c
index 8865b2ef2264..07b43c9863a2 100644
--- a/kernel/trace/trace_snapshot.c
+++ b/kernel/trace/trace_snapshot.c
@@ -391,9 +391,8 @@ void latency_fsnotify(struct trace_array *tr)
 	 */
 	irq_work_queue(&tr->fsnotify_irqwork);
 }
-#else
-static inline void latency_fsnotify(struct trace_array *tr) { }
 #endif /* LATENCY_FS_NOTIFY */
+
 static const struct file_operations tracing_max_lat_fops;
 
 void trace_create_maxlat_file(struct trace_array *tr,
-- 
2.51.0