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Date:	Fri, 8 Aug 2014 18:52:51 +0200
From:	Peter Zijlstra <>
To:	Steven Rostedt <>
Cc:	"Paul E. McKenney" <>,
	Oleg Nesterov <>,,,,,,,,,,,,,,
Subject: Re: [PATCH v3 tip/core/rcu 3/9] rcu: Add synchronous grace-period
 waiting for RCU-tasks

On Fri, Aug 08, 2014 at 12:40:18PM -0400, Steven Rostedt wrote:
> On Fri, 8 Aug 2014 18:17:09 +0200
> Peter Zijlstra <> wrote:
> > On Fri, Aug 08, 2014 at 11:39:49AM -0400, Steven Rostedt wrote:
> > > Also, anyone can register a function handler (perf, systemtap, and even
> > > LTTng can).
> > 
> > So how common is it to have more than 1 function event handler, and how
> > many of those cases is there significant difference in the actual
> > functions?
> For me, it's quite common. Of course, I tend to poweruse function
> tracing :-).  I do make instances and trace a few functions here and
> there, while tracing all functions.

Meh, then you have multiple trace files to combine, which makes the
entire reading/scripting thing just _that_ much harder.

Not useful.

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