Messages in this thread | | | Date | Thu, 2 Apr 2009 14:26:13 +0200 | From | Frederic Weisbecker <> | Subject | Re: [PATCH] tracing: mark get_parent_ip() notrace |
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On Thu, Apr 02, 2009 at 02:18:25PM +0800, Lai Jiangshan wrote: > > Impact: remove redundancy tracing log > > When tracer is "function" or "function_graph", too much > "get_parent_ip" are recorded in ring_buffer.
Thanks, indeed this get_parent_ip was a bit harrassing in the traces, though I still don't understand why it is called so often.
Anyway, tracing it seems to me not useful.
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
> Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com> > --- > diff --git a/kernel/sched.c b/kernel/sched.c > index 706517c..a0ec10c 100644 > --- a/kernel/sched.c > +++ b/kernel/sched.c > @@ -4860,7 +4860,7 @@ void scheduler_tick(void) > #endif > } > > -unsigned long get_parent_ip(unsigned long addr) > +notrace unsigned long get_parent_ip(unsigned long addr) > { > if (in_lock_functions(addr)) { > addr = CALLER_ADDR2; > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/
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