tracing: samples: Initialize trace_array_printk() with the correct function

commit 1b0c192c92ea1fe2dcb178f84adf15fe37c3e7c8 upstream.

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.

Cc: stable@vger.kernel.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Divya Indi <divya.indi@oracle.com>
Link: https://lore.kernel.org/20250509152657.0f6744d9@gandalf.local.home
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@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/samples/ftrace/sample-trace-array.c b/samples/ftrace/sample-trace-array.c
index 6aba02a31c96c52d24804aad834b9a169c8c318f..77685a7eb7678e2b941f64966d0c6ee645f0c004 100644 (file)
--- 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)) {