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>
diff --git a/init/main.c b/init/main.c
index f9c9d99..81a49e8 100644
--- a/init/main.c
+++ b/init/main.c
@@ -545,6 +545,9 @@ asmlinkage __visible void __init start_kernel(void)
trap_init();
mm_init();
+ /* trace_printk can be enabled here */
+ early_trace_init();
+
/*
* Set up the scheduler prior starting any interrupts (such as the
* timer interrupt). Full topology setup happens at smp_init()
@@ -570,7 +573,7 @@ asmlinkage __visible void __init start_kernel(void)
rcu_init();
- /* trace_printk() and trace points may be used after this */
+ /* Trace events are available after this */
trace_init();
context_tracking_init();
