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authorSteven Rostedt (VMware) <rostedt@goodmis.org>2017-03-03 21:37:33 +0300
committerSteven Rostedt (VMware) <rostedt@goodmis.org>2017-03-24 20:08:43 +0300
commite725c731e3bb1e892e7b564c945b121cb41d1087 (patch)
tree90e6ebfbd020855bb1914a979fd78d4ef65b8b9d /init/main.c
parent97da3854c526d3a6ee05c849c96e48d21527606c (diff)
downloadlinux-e725c731e3bb1e892e7b564c945b121cb41d1087.tar.xz
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>
Diffstat (limited to 'init/main.c')
-rw-r--r--init/main.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/init/main.c b/init/main.c
index f9c9d9948203..81a49e8d54cc 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();