[PATCH] tracing: samples: Initialize trace_array_printk() with the correct function

From: Steven Rostedt
Date: Fri May 09 2025 - 15:26:48 EST


From: Steven Rostedt <rostedt@xxxxxxxxxxx>

When using trace_array_printk() on a created instance, the correct
function to use to initialize it is:

trace_array_init_printk()

Not

trace_printk_init_buffer()

The former is a proper function to use, the latter is for initializing
trace_printk() and causes the NOTICE banner to be displayed.

Fixes: 89ed42495ef4a ("tracing: Sample module to demonstrate kernel access to Ftrace instances.")
Fixes: 38ce2a9e33db6 ("tracing: Add trace_array_init_printk() to initialize instance trace_printk() buffers")
Signed-off-by: Steven Rostedt (Google) <rostedt@xxxxxxxxxxx>
---
samples/ftrace/sample-trace-array.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/samples/ftrace/sample-trace-array.c b/samples/ftrace/sample-trace-array.c
index dac67c367457..4147616102f9 100644
--- a/samples/ftrace/sample-trace-array.c
+++ b/samples/ftrace/sample-trace-array.c
@@ -112,7 +112,7 @@ static int __init sample_trace_array_init(void)
/*
* If context specific per-cpu buffers havent already been allocated.
*/
- trace_printk_init_buffers();
+ trace_array_init_printk(tr);

simple_tsk = kthread_run(simple_thread, NULL, "sample-instance");
if (IS_ERR(simple_tsk)) {
--
2.47.2