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    SubjectRe: [RFC] tracefs
    On Fri, Oct 23, 2009 at 07:32:37AM +0200, Ingo Molnar wrote:
    > * Greg KH <> wrote:
    > > Hi all,
    > >
    > > At LinuxCon this year, Steven and I talked about moving the debugfs
    > > usage in the tracing core to a stand-alone filesystem to give the
    > > ability to start to lock down the api so that people an count on what
    > > is going on in the tracing userspace interface.
    > What we want to move out initially (and i talked to Steve and Frederic
    > about that a few weeks ago) is the event description bits - the format
    > stuff in /debug/tracing/events/ - but definitely not all the other,
    > rather messy and ad-hoc APIs.
    > _No way_ do we want to tie down the pretty-printing ftrace details as an
    > ABI. We promised that when ftrace went upstream and all the details are
    > way too messy to be exposed in an ABI alike matter (and yes, consider
    > this a NAK Steve ;-).
    > We want a _very_ careful exporting of certain pieces of information that
    > helps syscall-exposed perf events bits, and to improve the quality of
    > interfaces while we do that.
    > Ingo

    I guess the first bits that need to be exported are the TRACE_EVENT_ABI.
    But even before that, we need to ensure we have a final version of
    the trace events description.

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      Last update: 2009-10-23 11:41    [W:0.138 / U:9.588 seconds]
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