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    SubjectRe: [RFC PATCH 1/3] Unified trace buffer

    On Wed, 24 Sep 2008, David Miller wrote:

    > From: Linus Torvalds <torvalds@linux-foundation.org>
    > Date: Wed, 24 Sep 2008 13:23:47 -0700 (PDT)
    >
    > > So I'd like the thing to have small headers, and be designed from the
    > > start to have small headers.
    >
    > Small headers are good, but I'd suggest making sure there is an
    > "offset" or similar field in there.
    >
    > Not that I want to encourage frequent changes to header layout, but if
    > you do need to add something, then this offset field allows you to do
    > so while keeping existing analysis tools working. They will just
    > ignore the new information in the headers, but they will still be able
    > to get at the data bits using the offset.

    Right now I have a "length" field when fixed_length is not specified. This
    length is currently offest by 8 leaving all 8 bytes aligned.

    We could change this to be variable? Would that help you?

    -- Steve



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