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    SubjectRe: [PATCH] Linux Kernel Markers 0.13 for 2.6.17
    Mathieu Desnoyers wrote:
    > +/* Note : max 256 bytes between over_label and near_jump */
    > +#define MARK_JUMP(name, format, args...) \
    > + do { \
    > + asm volatile( ".section .markers, \"a\";\n\t" \
    > + ".long 0f, 1f, 2f;\n\t" \
    > + ".previous;\n\t" \
    > + ".align 16;\n\t" \
    > + ".byte 0xeb;\n\t" \
    > + "0:\n\t" \
    > + ".byte 2f-1f;\n\t" \
    > + "1:\n\t" \
    > + : "+m" (__marker_sequencer) : ); \
    > + MARK_CALL(name, format, ## args); \
    > + asm volatile ( "2:\n\t" : "+m" (__marker_sequencer) : ); \
    >

    Unfortunately this doesn't work either. The two asms are ordered with
    respect to each other, but there's nothing to 1) stop the MARK_CALL from
    being moved out between them, 2) something else being moved in between
    them. I don't really see a way out of this without implementing the
    whole call in assembler as well, which is a big pain.

    J
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