Messages in this thread | | | Date | Fri, 10 Jun 2011 14:34:16 +0200 | From | Ingo Molnar <> | Subject | Re: [PATCH 1/3] printk: Release console_sem after logbuf_lock |
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* Peter Zijlstra <peterz@infradead.org> wrote:
> thinking that that would have my printk stmts appear on both the > fbcon as well as the serial line. But they fail to appear on the > latency tracer (current max was 165us waking an idle cpu).
Have you removed this bit:
spin_unlock(&logbuf_lock); stop_critical_timings(); /* don't trace print latency */ call_console_drivers(_con_start, _log_end); start_critical_timings(); local_irq_restore(flags);
which hides the latencies from the latency tracer?
Thanks,
Ingo
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