diff options
| author | Frédéric Weisbecker <fweisbec@gmail.com> | 2008-09-23 11:38:18 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-10-14 10:38:50 +0200 |
| commit | 3bf77af6e1fef1124bf71d81f9f84885f0ee0dea (patch) | |
| tree | e16ac5f19fdcef2634a4ee5d5c10e9f31ee6df78 /init | |
| parent | 1f5c2abbdeb2bb07b20c6a66bfecefe6c867b1ee (diff) | |
| download | lwn-3bf77af6e1fef1124bf71d81f9f84885f0ee0dea.tar.gz lwn-3bf77af6e1fef1124bf71d81f9f84885f0ee0dea.zip | |
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>
Diffstat (limited to 'init')
| -rw-r--r-- | init/main.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/init/main.c b/init/main.c index 16abba05c826..1e39a1eab190 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(); |