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    SubjectRe: [PATCH] ftrace: add kernel command line graph function filtering
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    Le 12 octobre 2009 15:46, Steven Rostedt <rostedt@goodmis.org> a écrit :
    > On Mon, 2009-10-12 at 11:09 +0200, Frédéric Weisbecker wrote:
    >> 2009/10/12 Stefan Assmann <sassmann@redhat.com>:
    >> > From 894e934e782ddaa33eb6d156d8326cdf479b5f62 Mon Sep 17 00:00:00 2001
    >> > From: Stefan Assmann <sassmann@redhat.com>
    >> > Date: Mon, 12 Oct 2009 09:11:47 +0200
    >> > Subject: [PATCH] ftrace: add kernel command line graph function filtering
    >> >
    >> > Add a command line parameter to allow limiting the function graphs that
    >> > are traced on boot up, when ftrace=function_graph is specified.
    >> >
    >> > This patch adds the following command line option:
    >> > ftrace_graph_filter=function-list
    >>
    >>
    >> If we use this parameter, we undoubtedly want to launch the function
    >> graph tracer.
    >> I'd then suggest to arm ftrace=function_graph automatically if we have
    >> ftrace_graph_filter
    >> set.
    >>
    >
    > Actually, I disagree. I may just be lazy, and want to set up the
    > function graph to a particular set of functions. It doesn't mean I want
    > to run the function_graph tracer on boot up.
    >
    > This is the same reason I don't automatically set up ftrace=function
    > when the filter and notrace functions are set.


    No problem. I'll take the previous patch then, plus the kernel
    parameter doc fix in the current one :-)
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