tracing/ftrace: launch boot tracing after pre-smp initcalls

Launch the boot tracing inside the initcall_debug area. Old printk
have not been removed to keep the old way of initcall tracing for
backward compatibility.

[ mingo@elte.hu: resolved conflicts ]
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 10 insertions, 6 deletions

diff --git a/init/main.c b/init/main.c
index 16abba05c82..1e39a1eab19 100644
--- a/init/main.c
+++ b/init/main.c
@@ -709,10 +709,12 @@ int do_one_initcall(initcall_t fn)
         ktime_t t0, t1, delta;
         char msgbuf[64];
         int result;
+        struct boot_trace it;
 
         if (initcall_debug) {
-                printk("calling  %pF", fn);
-                printk(" @ %i\n",  task_pid_nr(current));
+                it.caller = task_pid_nr(current);
+                it.func = fn;
+                printk("calling  %pF @ %i\n", fn, it.caller);
                 t0 = ktime_get();
         }
 
@@ -721,10 +723,11 @@ int do_one_initcall(initcall_t fn)
         if (initcall_debug) {
                 t1 = ktime_get();
                 delta = ktime_sub(t1, t0);
-
-                printk("initcall %pF returned %d after %Ld msecs\n",
-                        fn, result,
-                        (unsigned long long) delta.tv64 >> 20);
+                it.result = result;
+                it.duration = (unsigned long long) delta.tv64 >> 20;
+                printk("initcall %pF returned %d after %Ld msecs\n", fn,
+                        result, it.duration);
+                trace_boot(&it);
         }
 
         msgbuf[0] = 0;
@@ -859,6 +862,7 @@ static int __init kernel_init(void * unused)
         smp_prepare_cpus(setup_max_cpus);
 
         do_pre_smp_initcalls();
+        start_boot_trace();
 
         smp_init();
         sched_init_smp();