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    SubjectRe: [cpuops cmpxchg double V3 3/5] Generic support for this_cpu_cmpxchg_double
    On Fri, 25 Feb 2011, Steven Rostedt wrote:

    > > + VM_BUG_ON((unsigned long)(&pcp1) % (2 * sizeof(pcp1))); \
    > > + VM_BUG_ON((unsigned long)(&pcp2) != (unsigned long)(&pcp1) + sizeof(pcp1));\
    > > + VM_BUG_ON(sizeof(pcp1) != sizeof(pcp2)); \
    >
    > Since this is a macro, and it looks like all these are constants (sizeof
    > and addresses), couldn't you just do a BUILD_BUG_ON() instead?

    The addresses are not constant.


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