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    SubjectRe: [PATCH 07/12] perf_events: add LBR software filter support for Intel X86
    (2011/10/12 16:06), Ingo Molnar wrote:
    >
    > * Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> wrote:
    >
    >> (2011/10/10 23:45), Andi Kleen wrote:
    >>>> Ah, nice. Maybe we need another test binary, since current one is
    >>>> just ensuring the output of objdump and decoder is same.
    >>>> anyway it's not so difficult if it feeds random binaries to
    >>>> ensure the decoder doesn't access bad address.
    >>>
    >>> Pure /dev/urandom is not good because it cannot be ever reproduced.
    >>> Better use a PRNG with random seed from urandom, but print the seed.
    >>
    >> Sure,
    >
    > Obviously the urandom data should be kbuild generated and only
    > cleared on 'make clean' - not regenerated on every run. So if there's
    > a failure the failing urandom data stays around readily.

    I've added options for passing a combination of seed and seqno
    or instruction sequence directly. So if someone find an error
    message, they can easily reproduce it or report it.

    Thank you,

    --
    Masami HIRAMATSU
    Software Platform Research Dept. Linux Technology Center
    Hitachi, Ltd., Yokohama Research Laboratory
    E-mail: masami.hiramatsu.pt@hitachi.com


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