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    SubjectRe: Reproducible nastiness in 2.0.3[2,3,4pre2] SMP
    Hi Guys,

    Alan Cox writes:

    > And that versioning isnt unfortunately good enough to seperate SMP and
    > non SMP modules most of the time

    I recall that several versions of 'genksyms' ago, Richard Henderson
    added a 'genksyms -p' flag to set a 'prefix string' for the generated
    symbols. The idea is that SMP builds can use 'genksyms -p smp_'.

    This code is in modutils-2.1.55, modutils-2.1.71, and modutils-2.1.85,
    so I think it's safe for the 2.1.XX kernels to depend on it now.

    It would be a short job for a Makefile hacker to go into Rules.make
    and patch the single rule that invokes GENKSYMS. In fact I think this
    is all the code that's needed:

    # Rules.make
    ifdef SMP
    genksyms_smp_prefix := -p smp_
    else
    genksyms_smp_prefix :=
    endif

    $(MODINCL)/%.ver: %.c
    $(CC) $(CFLAGS) -E -D__GENKSYMS__ $<\
    | $(GENKSYMS) $(genksyms_smp_prefix) -k $(VERSION).$(PATCHLEVEL).$(SUBLEVEL) > $@.tmp
    mv $@.tmp $@

    I don't have time to develop this idea but if someone wants to make
    a patch out of it, go for it.

    Michael Chastain
    <mailto:mec@shout.net>
    "love without fear"

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