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tracing/fastboot: change the printing of boot tracer according to bootgraph.pl

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Change the boot tracer printing to make it parsable for
the scripts/bootgraph.pl script.

We have now to output two lines for each initcall, according to the
printk in do_one_initcall() in init/main.c
We need now the call's time and the return's time.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Frederic Weisbecker
2008-10-02 12:59:20 +02:00
committed by Ingo Molnar
parent 77ae11f63b
commit cb5ab74204
3 changed files with 26 additions and 18 deletions
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20
init/main.c
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@@ -706,34 +706,32 @@ __setup("initcall_debug", initcall_debug_setup);
int do_one_initcall(initcall_t fn)
{
int count = preempt_count();
ktime_t t0, t1, delta;
ktime_t delta;
char msgbuf[64];
int result;
struct boot_trace it;
if (initcall_debug) {
it.caller = task_pid_nr(current);
it.func = fn;
printk("calling %pF @ %i\n", fn, it.caller);
t0 = ktime_get();
it.calltime = ktime_get();
}
result = fn();
it.result = fn();
if (initcall_debug) {
t1 = ktime_get();
delta = ktime_sub(t1, t0);
it.result = result;
it.rettime = ktime_get();
delta = ktime_sub(it.rettime, it.calltime);
it.duration = (unsigned long long) delta.tv64 >> 20;
printk("initcall %pF returned %d after %Ld msecs\n", fn,
result, it.duration);
it.result, it.duration);
trace_boot(&it);
}
msgbuf[0] = 0;
if (result && result != -ENODEV && initcall_debug)
sprintf(msgbuf, "error code %d ", result);
if (it.result && it.result != -ENODEV && initcall_debug)
sprintf(msgbuf, "error code %d ", it.result);
if (preempt_count() != count) {
strlcat(msgbuf, "preemption imbalance ", sizeof(msgbuf));
@@ -747,7 +745,7 @@ int do_one_initcall(initcall_t fn)
printk("initcall %pF returned with %s\n", fn, msgbuf);
}
return result;
return it.result;
}