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    SubjectRe: [PATCH] x86: add the debugfs interface for the sysprof tool
    Hi Andrew,

    Andrew Morton wrote:
    > I didn't need to write a new kernel module to enable that
    > thirteen-character shell script, and I don't believe one needs to write a
    > new kernel module to put a nice easy-to-use GUI around oprofile either.
    >
    > This is one of those i-cant-believe-im-having-this-discussion discussions.

    Sysprof tracks the full stack frame so it can provide meaningful call
    tree (who called what) which is invaluable for spotting hot _paths_. I
    don't see how oprofile can do that as it tracks instruction pointers only.

    Pekka


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