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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>
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parent
1f5c2abbde
commit
3bf77af6e1
1 changed files with 10 additions and 6 deletions
16
init/main.c
16
init/main.c
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@ -709,10 +709,12 @@ int do_one_initcall(initcall_t fn)
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ktime_t t0, t1, delta;
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ktime_t t0, t1, delta;
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char msgbuf[64];
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char msgbuf[64];
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int result;
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int result;
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struct boot_trace it;
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if (initcall_debug) {
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if (initcall_debug) {
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printk("calling %pF", fn);
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it.caller = task_pid_nr(current);
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printk(" @ %i\n", task_pid_nr(current));
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it.func = fn;
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printk("calling %pF @ %i\n", fn, it.caller);
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t0 = ktime_get();
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t0 = ktime_get();
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}
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}
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@ -721,10 +723,11 @@ int do_one_initcall(initcall_t fn)
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if (initcall_debug) {
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if (initcall_debug) {
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t1 = ktime_get();
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t1 = ktime_get();
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delta = ktime_sub(t1, t0);
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delta = ktime_sub(t1, t0);
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it.result = result;
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printk("initcall %pF returned %d after %Ld msecs\n",
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it.duration = (unsigned long long) delta.tv64 >> 20;
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fn, result,
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printk("initcall %pF returned %d after %Ld msecs\n", fn,
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(unsigned long long) delta.tv64 >> 20);
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result, it.duration);
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trace_boot(&it);
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}
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}
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msgbuf[0] = 0;
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msgbuf[0] = 0;
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@ -859,6 +862,7 @@ static int __init kernel_init(void * unused)
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smp_prepare_cpus(setup_max_cpus);
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smp_prepare_cpus(setup_max_cpus);
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do_pre_smp_initcalls();
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do_pre_smp_initcalls();
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start_boot_trace();
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smp_init();
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smp_init();
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sched_init_smp();
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sched_init_smp();
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