tracing: Split tracing initialization into two for early initialization

Create an early_trace_init() function that will initialize the buffers and
allow for ealier use of trace_printk(). This will also allow for future work
to have function tracing start earlier at boot up.

Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

1 files changed, 5 insertions, 1 deletions

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index f35109514a01..6757561d9617 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -7999,7 +7999,7 @@ out:
         return ret;
 }
 
-void __init trace_init(void)
+void __init early_trace_init(void)
 {
         if (tracepoint_printk) {
                 tracepoint_print_iter =
@@ -8010,6 +8010,10 @@ void __init trace_init(void)
                         static_key_enable(&tracepoint_printk_key.key);
         }
         tracer_alloc_buffers();
+}
+
+void __init trace_init(void)
+{
         trace_event_init();
 }