Messages in this thread | | | Subject | Re: [PATCH] tracing: mark get_parent_ip() notrace | From | Steven Rostedt <> | Date | Mon, 13 Apr 2009 10:43:33 -0400 |
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On Mon, 2009-04-13 at 14:17 +0800, Lai Jiangshan wrote: > Frederic Weisbecker wrote: > > 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> > > > > > > Hi, Ingo, > Could you apply this fix? > > get_parent_ip() is a helper function for ftace, and it is called > by preempt_disable() and preempt_enable(), so it is occurred very > often.
I can pull it in too, if Ingo is busy.
-- Steve
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