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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>
This commit is contained in:
Frédéric Weisbecker 2008-09-23 11:38:18 +01:00 committed by Ingo Molnar
parent 1f5c2abbde
commit 3bf77af6e1
1 changed files with 10 additions and 6 deletions
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16
init/main.c
View File

@ -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();