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    SubjectRe: [PATCH] ftrace: ftrace_dump_on_oops=[tracer]

    On Sat, 1 Nov 2008, Peter Zijlstra wrote:

    > On Sat, 2008-11-01 at 14:43 -0400, Steven Rostedt wrote:
    > > On Sat, 1 Nov 2008, Peter Zijlstra wrote:
    > >
    > > > seems useful to debug crashes that happen before I read userspace.
    > >
    > > Hmm, I think it might be better to separate this from the dump_on_oops.
    > > How about a ftrace_default_tracer parameter?
    > >
    > > If one is defined, it is activated as soon as it is initialized. This way
    > > we decouple the dump_on_oops, which we may not always want, and a way to
    > > start tracers before the switch to user space.
    >
    > Like so?

    Sure.

    >
    > ---
    > Subject: ftrace: enable setting an ftrace tracer on boot
    >
    > In order to facilitate early boot trouble, allow one to specify a tracer
    > on the kernel boot line.
    >
    > Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>

    Acked-by: Steven Rostedt <srostedt@redhat.com>

    -- Steve


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